2715 lines
192 KiB
HTML
Executable File
2715 lines
192 KiB
HTML
Executable File
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<!DOCTYPE html>
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<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
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<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Query Builder Class — CodeIgniter 3.1.11 documentation</title>
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<link rel="shortcut icon" href="../_static/ci-icon.ico"/>
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<link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
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<link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" />
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<link rel="index" title="Index"
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href="../genindex.html"/>
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<link rel="search" title="Search" href="../search.html"/>
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<link rel="top" title="CodeIgniter 3.1.11 documentation" href="../index.html"/>
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<link rel="up" title="Database Reference" href="index.html"/>
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<link rel="next" title="Transactions" href="transactions.html"/>
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<link rel="prev" title="Query Helper Methods" href="helpers.html"/>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
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</head>
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<body class="wy-body-for-nav" role="document">
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<div id="nav">
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<div id="nav_inner">
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<div id="pulldown-menu" class="ciNav">
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
|
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</ul>
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</li>
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</ul>
|
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
|
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<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
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||
</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
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</ul>
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</li>
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</ul>
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<ul class="current">
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<li class="toctree-l1 current"><a class="reference internal" href="index.html">Database Reference</a><ul class="current">
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<li class="toctree-l2"><a class="reference internal" href="examples.html">Quick Start: Usage Examples</a></li>
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<li class="toctree-l2"><a class="reference internal" href="configuration.html">Database Configuration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="connecting.html">Connecting to a Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="queries.html">Running Queries</a></li>
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<li class="toctree-l2"><a class="reference internal" href="results.html">Generating Query Results</a></li>
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<li class="toctree-l2"><a class="reference internal" href="helpers.html">Query Helper Functions</a></li>
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<li class="toctree-l2 current"><a class="current reference internal" href="#">Query Builder Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="transactions.html">Transactions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="metadata.html">Getting MetaData</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="call_function.html">Custom Function Calls</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="caching.html">Query Caching</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="forge.html">Database Manipulation with Database Forge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="utilities.html">Database Utilities Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="db_driver_reference.html">Database Driver Reference</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
|
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</ul>
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</li>
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</ul>
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</div>
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</div>
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</div>
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<div id="nav2">
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<a href="#" id="openToc">
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<img src="data:image/jpeg;base64,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" title="Toggle Table of Contents" alt="Toggle Table of Contents" />
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<div class="section" id="query-builder-class">
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<h1>Query Builder Class<a class="headerlink" href="#query-builder-class" title="Permalink to this headline">¶</a></h1>
|
||
<p>CodeIgniter gives you access to a Query Builder class. This pattern
|
||
allows information to be retrieved, inserted, and updated in your
|
||
database with minimal scripting. In some cases only one or two lines
|
||
of code are necessary to perform a database action.
|
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CodeIgniter does not require that each database table be its own class
|
||
file. It instead provides a more simplified interface.</p>
|
||
<p>Beyond simplicity, a major benefit to using the Query Builder features
|
||
is that it allows you to create database independent applications, since
|
||
the query syntax is generated by each database adapter. It also allows
|
||
for safer queries, since the values are escaped automatically by the
|
||
system.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">If you intend to write your own queries you can disable this
|
||
class in your database config file, allowing the core database library
|
||
and adapter to utilize fewer resources.</p>
|
||
</div>
|
||
<div class="contents local topic" id="contents">
|
||
<ul class="simple">
|
||
<li><a class="reference internal" href="#selecting-data" id="id1">Selecting Data</a></li>
|
||
<li><a class="reference internal" href="#looking-for-specific-data" id="id2">Looking for Specific Data</a></li>
|
||
<li><a class="reference internal" href="#looking-for-similar-data" id="id3">Looking for Similar Data</a></li>
|
||
<li><a class="reference internal" href="#ordering-results" id="id4">Ordering results</a></li>
|
||
<li><a class="reference internal" href="#limiting-or-counting-results" id="id5">Limiting or Counting Results</a></li>
|
||
<li><a class="reference internal" href="#query-grouping" id="id6">Query grouping</a></li>
|
||
<li><a class="reference internal" href="#inserting-data" id="id7">Inserting Data</a></li>
|
||
<li><a class="reference internal" href="#updating-data" id="id8">Updating Data</a></li>
|
||
<li><a class="reference internal" href="#deleting-data" id="id9">Deleting Data</a></li>
|
||
<li><a class="reference internal" href="#method-chaining" id="id10">Method Chaining</a></li>
|
||
<li><a class="reference internal" href="#query-builder-caching" id="id11">Query Builder Caching</a></li>
|
||
<li><a class="reference internal" href="#resetting-query-builder" id="id12">Resetting Query Builder</a></li>
|
||
<li><a class="reference internal" href="#class-reference" id="id13">Class Reference</a></li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="selecting-data">
|
||
<h2><a class="toc-backref" href="#id1">Selecting Data</a><a class="headerlink" href="#selecting-data" title="Permalink to this headline">¶</a></h2>
|
||
<p>The following functions allow you to build SQL <strong>SELECT</strong> statements.</p>
|
||
<p><strong>$this->db->get()</strong></p>
|
||
<p>Runs the selection query and returns the result. Can be used by itself
|
||
to retrieve all records from a table:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span> <span class="c1">// Produces: SELECT * FROM mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The second and third parameters enable you to set a limit and offset
|
||
clause:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="mi">20</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Executes: SELECT * FROM mytable LIMIT 20, 10</span>
|
||
<span class="c1">// (in MySQL. Other databases have slightly different syntax)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You’ll notice that the above function is assigned to a variable named
|
||
$query, which can be used to show the results:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
|
||
<span class="k">foreach</span> <span class="p">(</span><span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$row</span><span class="p">)</span>
|
||
<span class="p">{</span>
|
||
<span class="k">echo</span> <span class="nv">$row</span><span class="o">-></span><span class="na">title</span><span class="p">;</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Please visit the <a class="reference internal" href="results.html"><span class="doc">result functions</span></a> page for a full
|
||
discussion regarding result generation.</p>
|
||
<p><strong>$this->db->get_compiled_select()</strong></p>
|
||
<p>Compiles the selection query just like <strong>$this->db->get()</strong> but does not <em>run</em>
|
||
the query. This method simply returns the SQL query as a string.</p>
|
||
<p>Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$sql</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get_compiled_select</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
<span class="k">echo</span> <span class="nv">$sql</span><span class="p">;</span>
|
||
|
||
<span class="c1">// Prints string: SELECT * FROM mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The second parameter enables you to set whether or not the query builder query
|
||
will be reset (by default it will be reset, just like when using <cite>$this->db->get()</cite>):</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">limit</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span><span class="mi">20</span><span class="p">)</span><span class="o">-></span><span class="na">get_compiled_select</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Prints string: SELECT * FROM mytable LIMIT 20, 10</span>
|
||
<span class="c1">// (in MySQL. Other databases have slightly different syntax)</span>
|
||
|
||
<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'title, content, date'</span><span class="p">)</span><span class="o">-></span><span class="na">get_compiled_select</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Prints string: SELECT title, content, date FROM mytable LIMIT 20, 10</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The key thing to notice in the above example is that the second query did not
|
||
utilize <strong>$this->db->from()</strong> and did not pass a table name into the first
|
||
parameter. The reason for this outcome is because the query has not been
|
||
executed using <strong>$this->db->get()</strong> which resets values or reset directly
|
||
using <strong>$this->db->reset_query()</strong>.</p>
|
||
<p><strong>$this->db->get_where()</strong></p>
|
||
<p>Identical to the above function except that it permits you to add a
|
||
“where” clause in the second parameter, instead of using the db->where()
|
||
function:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get_where</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'id'</span> <span class="o">=></span> <span class="nv">$id</span><span class="p">),</span> <span class="nv">$limit</span><span class="p">,</span> <span class="nv">$offset</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Please read the about the where function below for more information.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">get_where() was formerly known as getwhere(), which has been removed</p>
|
||
</div>
|
||
<p><strong>$this->db->select()</strong></p>
|
||
<p>Permits you to write the SELECT portion of your query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'title, content, date'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Executes: SELECT title, content, date FROM mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">If you are selecting all (*) from a table you do not need to
|
||
use this function. When omitted, CodeIgniter assumes that you wish
|
||
to select all fields and automatically adds ‘SELECT *’.</p>
|
||
</div>
|
||
<p><code class="docutils literal"><span class="pre">$this->db->select()</span></code> accepts an optional second parameter. If you set it
|
||
to FALSE, CodeIgniter will not try to protect your field or table names.
|
||
This is useful if you need a compound select statement where automatic
|
||
escaping of fields may break them.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'(SELECT SUM(payments.amount) FROM payments WHERE payments.invoice_id=4) AS amount_paid'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->select_max()</strong></p>
|
||
<p>Writes a <code class="docutils literal"><span class="pre">SELECT</span> <span class="pre">MAX(field)</span></code> portion for your query. You can optionally
|
||
include a second parameter to rename the resulting field.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select_max</span><span class="p">(</span><span class="s1">'age'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'members'</span><span class="p">);</span> <span class="c1">// Produces: SELECT MAX(age) as age FROM members</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select_max</span><span class="p">(</span><span class="s1">'age'</span><span class="p">,</span> <span class="s1">'member_age'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'members'</span><span class="p">);</span> <span class="c1">// Produces: SELECT MAX(age) as member_age FROM members</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->select_min()</strong></p>
|
||
<p>Writes a “SELECT MIN(field)” portion for your query. As with
|
||
select_max(), You can optionally include a second parameter to rename
|
||
the resulting field.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select_min</span><span class="p">(</span><span class="s1">'age'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'members'</span><span class="p">);</span> <span class="c1">// Produces: SELECT MIN(age) as age FROM members</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->select_avg()</strong></p>
|
||
<p>Writes a “SELECT AVG(field)” portion for your query. As with
|
||
select_max(), You can optionally include a second parameter to rename
|
||
the resulting field.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select_avg</span><span class="p">(</span><span class="s1">'age'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'members'</span><span class="p">);</span> <span class="c1">// Produces: SELECT AVG(age) as age FROM members</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->select_sum()</strong></p>
|
||
<p>Writes a “SELECT SUM(field)” portion for your query. As with
|
||
select_max(), You can optionally include a second parameter to rename
|
||
the resulting field.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select_sum</span><span class="p">(</span><span class="s1">'age'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'members'</span><span class="p">);</span> <span class="c1">// Produces: SELECT SUM(age) as age FROM members</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->from()</strong></p>
|
||
<p>Permits you to write the FROM portion of your query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'title, content, date'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">from</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">();</span> <span class="c1">// Produces: SELECT title, content, date FROM mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">As shown earlier, the FROM portion of your query can be specified
|
||
in the $this->db->get() function, so use whichever method you prefer.</p>
|
||
</div>
|
||
<p><strong>$this->db->join()</strong></p>
|
||
<p>Permits you to write the JOIN portion of your query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'*'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">from</span><span class="p">(</span><span class="s1">'blogs'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">join</span><span class="p">(</span><span class="s1">'comments'</span><span class="p">,</span> <span class="s1">'comments.id = blogs.id'</span><span class="p">);</span>
|
||
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Produces:</span>
|
||
<span class="c1">// SELECT * FROM blogs JOIN comments ON comments.id = blogs.id</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Multiple function calls can be made if you need several joins in one
|
||
query.</p>
|
||
<p>If you need a specific type of JOIN you can specify it via the third
|
||
parameter of the function. Options are: left, right, outer, inner, left
|
||
outer, and right outer.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">join</span><span class="p">(</span><span class="s1">'comments'</span><span class="p">,</span> <span class="s1">'comments.id = blogs.id'</span><span class="p">,</span> <span class="s1">'left'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: LEFT JOIN comments ON comments.id = blogs.id</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="looking-for-specific-data">
|
||
<h2><a class="toc-backref" href="#id2">Looking for Specific Data</a><a class="headerlink" href="#looking-for-specific-data" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->where()</strong></p>
|
||
<p>This function enables you to set <strong>WHERE</strong> clauses using one of four
|
||
methods:</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values passed to this function are escaped automatically,
|
||
producing safer queries.</p>
|
||
</div>
|
||
<ol class="arabic">
|
||
<li><p class="first"><strong>Simple key/value method:</strong></p>
|
||
<blockquote>
|
||
<div><div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'name'</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span> <span class="c1">// Produces: WHERE name = 'Joe'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Notice that the equal sign is added for you.</p>
|
||
<p>If you use multiple function calls they will be chained together with
|
||
AND between them:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'name'</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="nv">$title</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'status'</span><span class="p">,</span> <span class="nv">$status</span><span class="p">);</span>
|
||
<span class="c1">// WHERE name = 'Joe' AND title = 'boss' AND status = 'active'</span>
|
||
</pre></div>
|
||
</div>
|
||
</div></blockquote>
|
||
</li>
|
||
<li><p class="first"><strong>Custom key/value method:</strong></p>
|
||
<blockquote>
|
||
<div><p>You can include an operator in the first parameter in order to
|
||
control the comparison:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'name !='</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id <'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span> <span class="c1">// Produces: WHERE name != 'Joe' AND id < 45</span>
|
||
</pre></div>
|
||
</div>
|
||
</div></blockquote>
|
||
</li>
|
||
<li><p class="first"><strong>Associative array method:</strong></p>
|
||
<blockquote>
|
||
<div><div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$array</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'name'</span> <span class="o">=></span> <span class="nv">$name</span><span class="p">,</span> <span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$title</span><span class="p">,</span> <span class="s1">'status'</span> <span class="o">=></span> <span class="nv">$status</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="nv">$array</span><span class="p">);</span>
|
||
<span class="c1">// Produces: WHERE name = 'Joe' AND title = 'boss' AND status = 'active'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can include your own operators using this method as well:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$array</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'name !='</span> <span class="o">=></span> <span class="nv">$name</span><span class="p">,</span> <span class="s1">'id <'</span> <span class="o">=></span> <span class="nv">$id</span><span class="p">,</span> <span class="s1">'date >'</span> <span class="o">=></span> <span class="nv">$date</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="nv">$array</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div></blockquote>
|
||
</li>
|
||
<li><dl class="first docutils">
|
||
<dt><strong>Custom string:</strong></dt>
|
||
<dd><p class="first">You can write your own clauses manually:</p>
|
||
<div class="last highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$where</span> <span class="o">=</span> <span class="s2">"name='Joe' AND status='boss' OR status='active'"</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="nv">$where</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</dd>
|
||
</dl>
|
||
</li>
|
||
</ol>
|
||
<p><code class="docutils literal"><span class="pre">$this->db->where()</span></code> accepts an optional third parameter. If you set it to
|
||
FALSE, CodeIgniter will not try to protect your field or table names.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'MATCH (field) AGAINST ("value")'</span><span class="p">,</span> <span class="k">NULL</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->or_where()</strong></p>
|
||
<p>This function is identical to the one above, except that multiple
|
||
instances are joined by OR:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'name !='</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">or_where</span><span class="p">(</span><span class="s1">'id >'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span> <span class="c1">// Produces: WHERE name != 'Joe' OR id > 50</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">or_where() was formerly known as orwhere(), which has been
|
||
removed.</p>
|
||
</div>
|
||
<p><strong>$this->db->where_in()</strong></p>
|
||
<p>Generates a WHERE field IN (‘item’, ‘item’) SQL query joined with AND if
|
||
appropriate</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$names</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'Frank'</span><span class="p">,</span> <span class="s1">'Todd'</span><span class="p">,</span> <span class="s1">'James'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where_in</span><span class="p">(</span><span class="s1">'username'</span><span class="p">,</span> <span class="nv">$names</span><span class="p">);</span>
|
||
<span class="c1">// Produces: WHERE username IN ('Frank', 'Todd', 'James')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->or_where_in()</strong></p>
|
||
<p>Generates a WHERE field IN (‘item’, ‘item’) SQL query joined with OR if
|
||
appropriate</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$names</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'Frank'</span><span class="p">,</span> <span class="s1">'Todd'</span><span class="p">,</span> <span class="s1">'James'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">or_where_in</span><span class="p">(</span><span class="s1">'username'</span><span class="p">,</span> <span class="nv">$names</span><span class="p">);</span>
|
||
<span class="c1">// Produces: OR username IN ('Frank', 'Todd', 'James')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->where_not_in()</strong></p>
|
||
<p>Generates a WHERE field NOT IN (‘item’, ‘item’) SQL query joined with
|
||
AND if appropriate</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$names</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'Frank'</span><span class="p">,</span> <span class="s1">'Todd'</span><span class="p">,</span> <span class="s1">'James'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where_not_in</span><span class="p">(</span><span class="s1">'username'</span><span class="p">,</span> <span class="nv">$names</span><span class="p">);</span>
|
||
<span class="c1">// Produces: WHERE username NOT IN ('Frank', 'Todd', 'James')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->or_where_not_in()</strong></p>
|
||
<p>Generates a WHERE field NOT IN (‘item’, ‘item’) SQL query joined with OR
|
||
if appropriate</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$names</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'Frank'</span><span class="p">,</span> <span class="s1">'Todd'</span><span class="p">,</span> <span class="s1">'James'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">or_where_not_in</span><span class="p">(</span><span class="s1">'username'</span><span class="p">,</span> <span class="nv">$names</span><span class="p">);</span>
|
||
<span class="c1">// Produces: OR username NOT IN ('Frank', 'Todd', 'James')</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="looking-for-similar-data">
|
||
<h2><a class="toc-backref" href="#id3">Looking for Similar Data</a><a class="headerlink" href="#looking-for-similar-data" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->like()</strong></p>
|
||
<p>This method enables you to generate <strong>LIKE</strong> clauses, useful for doing
|
||
searches.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values passed to this method are escaped automatically.</p>
|
||
</div>
|
||
<ol class="arabic">
|
||
<li><p class="first"><strong>Simple key/value method:</strong></p>
|
||
<blockquote>
|
||
<div><div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: WHERE `title` LIKE '%match%' ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you use multiple method calls they will be chained together with
|
||
AND between them:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'body'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="c1">// WHERE `title` LIKE '%match%' ESCAPE '!' AND `body` LIKE '%match% ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you want to control where the wildcard (%) is placed, you can use
|
||
an optional third argument. Your options are ‘before’, ‘after’, ‘none’ and
|
||
‘both’ (which is the default).</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">,</span> <span class="s1">'before'</span><span class="p">);</span> <span class="c1">// Produces: WHERE `title` LIKE '%match' ESCAPE '!'</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">,</span> <span class="s1">'after'</span><span class="p">);</span> <span class="c1">// Produces: WHERE `title` LIKE 'match%' ESCAPE '!'</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">,</span> <span class="s1">'none'</span><span class="p">);</span> <span class="c1">// Produces: WHERE `title` LIKE 'match' ESCAPE '!'</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">,</span> <span class="s1">'both'</span><span class="p">);</span> <span class="c1">// Produces: WHERE `title` LIKE '%match%' ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
</div></blockquote>
|
||
</li>
|
||
<li><p class="first"><strong>Associative array method:</strong></p>
|
||
<blockquote>
|
||
<div><div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$array</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$match</span><span class="p">,</span> <span class="s1">'page1'</span> <span class="o">=></span> <span class="nv">$match</span><span class="p">,</span> <span class="s1">'page2'</span> <span class="o">=></span> <span class="nv">$match</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="nv">$array</span><span class="p">);</span>
|
||
<span class="c1">// WHERE `title` LIKE '%match%' ESCAPE '!' AND `page1` LIKE '%match%' ESCAPE '!' AND `page2` LIKE '%match%' ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
</div></blockquote>
|
||
</li>
|
||
</ol>
|
||
<p><strong>$this->db->or_like()</strong></p>
|
||
<p>This method is identical to the one above, except that multiple
|
||
instances are joined by OR:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">or_like</span><span class="p">(</span><span class="s1">'body'</span><span class="p">,</span> <span class="nv">$match</span><span class="p">);</span>
|
||
<span class="c1">// WHERE `title` LIKE '%match%' ESCAPE '!' OR `body` LIKE '%match%' ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last"><code class="docutils literal"><span class="pre">or_like()</span></code> was formerly known as <code class="docutils literal"><span class="pre">orlike()</span></code>, which has been removed.</p>
|
||
</div>
|
||
<p><strong>$this->db->not_like()</strong></p>
|
||
<p>This method is identical to <code class="docutils literal"><span class="pre">like()</span></code>, except that it generates
|
||
NOT LIKE statements:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">not_like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span> <span class="c1">// WHERE `title` NOT LIKE '%match% ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->or_not_like()</strong></p>
|
||
<p>This method is identical to <code class="docutils literal"><span class="pre">not_like()</span></code>, except that multiple
|
||
instances are joined by OR:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">or_not_like</span><span class="p">(</span><span class="s1">'body'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="c1">// WHERE `title` LIKE '%match% OR `body` NOT LIKE '%match%' ESCAPE '!'</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->group_by()</strong></p>
|
||
<p>Permits you to write the GROUP BY portion of your query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">group_by</span><span class="p">(</span><span class="s2">"title"</span><span class="p">);</span> <span class="c1">// Produces: GROUP BY title</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can also pass an array of multiple values as well:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">group_by</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s2">"title"</span><span class="p">,</span> <span class="s2">"date"</span><span class="p">));</span> <span class="c1">// Produces: GROUP BY title, date</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">group_by() was formerly known as groupby(), which has been
|
||
removed.</p>
|
||
</div>
|
||
<p><strong>$this->db->distinct()</strong></p>
|
||
<p>Adds the “DISTINCT” keyword to a query</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">distinct</span><span class="p">();</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'table'</span><span class="p">);</span> <span class="c1">// Produces: SELECT DISTINCT * FROM table</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->having()</strong></p>
|
||
<p>Permits you to write the HAVING portion of your query. There are 2
|
||
possible syntaxes, 1 argument or 2:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">having</span><span class="p">(</span><span class="s1">'user_id = 45'</span><span class="p">);</span> <span class="c1">// Produces: HAVING user_id = 45</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">having</span><span class="p">(</span><span class="s1">'user_id'</span><span class="p">,</span> <span class="mi">45</span><span class="p">);</span> <span class="c1">// Produces: HAVING user_id = 45</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can also pass an array of multiple values as well:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">having</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'title ='</span> <span class="o">=></span> <span class="s1">'My Title'</span><span class="p">,</span> <span class="s1">'id <'</span> <span class="o">=></span> <span class="nv">$id</span><span class="p">));</span>
|
||
<span class="c1">// Produces: HAVING title = 'My Title', id < 45</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you are using a database that CodeIgniter escapes queries for, you
|
||
can prevent escaping content by passing an optional third argument, and
|
||
setting it to FALSE.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">having</span><span class="p">(</span><span class="s1">'user_id'</span><span class="p">,</span> <span class="mi">45</span><span class="p">);</span> <span class="c1">// Produces: HAVING `user_id` = 45 in some databases such as MySQL</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">having</span><span class="p">(</span><span class="s1">'user_id'</span><span class="p">,</span> <span class="mi">45</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> <span class="c1">// Produces: HAVING user_id = 45</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->or_having()</strong></p>
|
||
<p>Identical to having(), only separates multiple clauses with “OR”.</p>
|
||
</div>
|
||
<div class="section" id="ordering-results">
|
||
<h2><a class="toc-backref" href="#id4">Ordering results</a><a class="headerlink" href="#ordering-results" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->order_by()</strong></p>
|
||
<p>Lets you set an ORDER BY clause.</p>
|
||
<p>The first parameter contains the name of the column you would like to order by.</p>
|
||
<p>The second parameter lets you set the direction of the result.
|
||
Options are <strong>ASC</strong>, <strong>DESC</strong> AND <strong>RANDOM</strong>.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'DESC'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: ORDER BY `title` DESC</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can also pass your own string in the first parameter:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="s1">'title DESC, name ASC'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: ORDER BY `title` DESC, `name` ASC</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Or multiple function calls can be made if you need multiple fields.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'DESC'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="s1">'name'</span><span class="p">,</span> <span class="s1">'ASC'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: ORDER BY `title` DESC, `name` ASC</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you choose the <strong>RANDOM</strong> direction option, then the first parameters will
|
||
be ignored, unless you specify a numeric seed value.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'RANDOM'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: ORDER BY RAND()</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">order_by</span><span class="p">(</span><span class="mi">42</span><span class="p">,</span> <span class="s1">'RANDOM'</span><span class="p">);</span>
|
||
<span class="c1">// Produces: ORDER BY RAND(42)</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">order_by() was formerly known as orderby(), which has been
|
||
removed.</p>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">Random ordering is not currently supported in Oracle and
|
||
will default to ASC instead.</p>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="limiting-or-counting-results">
|
||
<h2><a class="toc-backref" href="#id5">Limiting or Counting Results</a><a class="headerlink" href="#limiting-or-counting-results" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->limit()</strong></p>
|
||
<p>Lets you limit the number of rows you would like returned by the query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">limit</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span> <span class="c1">// Produces: LIMIT 10</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The second parameter lets you set a result offset.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">limit</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">20</span><span class="p">);</span> <span class="c1">// Produces: LIMIT 20, 10 (in MySQL. Other databases have slightly different syntax)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->count_all_results()</strong></p>
|
||
<p>Permits you to determine the number of rows in a particular Active
|
||
Record query. Queries will accept Query Builder restrictors such as
|
||
<code class="docutils literal"><span class="pre">where()</span></code>, <code class="docutils literal"><span class="pre">or_where()</span></code>, <code class="docutils literal"><span class="pre">like()</span></code>, <code class="docutils literal"><span class="pre">or_like()</span></code>, etc. Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">count_all_results</span><span class="p">(</span><span class="s1">'my_table'</span><span class="p">);</span> <span class="c1">// Produces an integer, like 25</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">like</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'match'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">from</span><span class="p">(</span><span class="s1">'my_table'</span><span class="p">);</span>
|
||
<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">count_all_results</span><span class="p">();</span> <span class="c1">// Produces an integer, like 17</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>However, this method also resets any field values that you may have passed
|
||
to <code class="docutils literal"><span class="pre">select()</span></code>. If you need to keep them, you can pass <code class="docutils literal"><span class="pre">FALSE</span></code> as the
|
||
second parameter:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">count_all_results</span><span class="p">(</span><span class="s1">'my_table'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->count_all()</strong></p>
|
||
<p>Permits you to determine the number of rows in a particular table.
|
||
Submit the table name in the first parameter. Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">count_all</span><span class="p">(</span><span class="s1">'my_table'</span><span class="p">);</span> <span class="c1">// Produces an integer, like 25</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="query-grouping">
|
||
<h2><a class="toc-backref" href="#id6">Query grouping</a><a class="headerlink" href="#query-grouping" title="Permalink to this headline">¶</a></h2>
|
||
<p>Query grouping allows you to create groups of WHERE clauses by enclosing them in parentheses. This will allow
|
||
you to create queries with complex WHERE clauses. Nested groups are supported. Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'*'</span><span class="p">)</span><span class="o">-></span><span class="na">from</span><span class="p">(</span><span class="s1">'my_table'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">group_start</span><span class="p">()</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'a'</span><span class="p">,</span> <span class="s1">'a'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">or_group_start</span><span class="p">()</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'b'</span><span class="p">,</span> <span class="s1">'b'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'c'</span><span class="p">,</span> <span class="s1">'c'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">group_end</span><span class="p">()</span>
|
||
<span class="o">-></span><span class="na">group_end</span><span class="p">()</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'d'</span><span class="p">,</span> <span class="s1">'d'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">get</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Generates:</span>
|
||
<span class="c1">// SELECT * FROM (`my_table`) WHERE ( `a` = 'a' OR ( `b` = 'b' AND `c` = 'c' ) ) AND `d` = 'd'</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">groups need to be balanced, make sure every group_start() is matched by a group_end().</p>
|
||
</div>
|
||
<p><strong>$this->db->group_start()</strong></p>
|
||
<p>Starts a new group by adding an opening parenthesis to the WHERE clause of the query.</p>
|
||
<p><strong>$this->db->or_group_start()</strong></p>
|
||
<p>Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with ‘OR’.</p>
|
||
<p><strong>$this->db->not_group_start()</strong></p>
|
||
<p>Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with ‘NOT’.</p>
|
||
<p><strong>$this->db->or_not_group_start()</strong></p>
|
||
<p>Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with ‘OR NOT’.</p>
|
||
<p><strong>$this->db->group_end()</strong></p>
|
||
<p>Ends the current group by adding an closing parenthesis to the WHERE clause of the query.</p>
|
||
</div>
|
||
<div class="section" id="inserting-data">
|
||
<h2><a class="toc-backref" href="#id7">Inserting Data</a><a class="headerlink" href="#inserting-data" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->insert()</strong></p>
|
||
<p>Generates an insert string based on the data you supply, and runs the
|
||
query. You can either pass an <strong>array</strong> or an <strong>object</strong> to the
|
||
function. Here is an example using an array:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'My title'</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'My Name'</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'My date'</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
|
||
<span class="c1">// Produces: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The first parameter will contain the table name, the second is an
|
||
associative array of values.</p>
|
||
<p>Here is an example using an object:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
|
||
<span class="cm">class Myclass {</span>
|
||
<span class="cm"> public $title = 'My Title';</span>
|
||
<span class="cm"> public $content = 'My Content';</span>
|
||
<span class="cm"> public $date = 'My Date';</span>
|
||
<span class="cm">}</span>
|
||
<span class="cm">*/</span>
|
||
|
||
<span class="nv">$object</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Myclass</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$object</span><span class="p">);</span>
|
||
<span class="c1">// Produces: INSERT INTO mytable (title, content, date) VALUES ('My Title', 'My Content', 'My Date')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The first parameter will contain the table name, the second is an
|
||
object.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values are escaped automatically producing safer queries.</p>
|
||
</div>
|
||
<p><strong>$this->db->get_compiled_insert()</strong></p>
|
||
<p>Compiles the insertion query just like $this->db->insert() but does not
|
||
<em>run</em> the query. This method simply returns the SQL query as a string.</p>
|
||
<p>Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'My title'</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'My Name'</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'My date'</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$sql</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="nv">$data</span><span class="p">)</span><span class="o">-></span><span class="na">get_compiled_insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
<span class="k">echo</span> <span class="nv">$sql</span><span class="p">;</span>
|
||
|
||
<span class="c1">// Produces string: INSERT INTO mytable (`title`, `name`, `date`) VALUES ('My title', 'My name', 'My date')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The second parameter enables you to set whether or not the query builder query
|
||
will be reset (by default it will be–just like $this->db->insert()):</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="s1">'My Title'</span><span class="p">)</span><span class="o">-></span><span class="na">get_compiled_insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Produces string: INSERT INTO mytable (`title`) VALUES ('My Title')</span>
|
||
|
||
<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'content'</span><span class="p">,</span> <span class="s1">'My Content'</span><span class="p">)</span><span class="o">-></span><span class="na">get_compiled_insert</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Produces string: INSERT INTO mytable (`title`, `content`) VALUES ('My Title', 'My Content')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The key thing to notice in the above example is that the second query did not
|
||
utilize <cite>$this->db->from()</cite> nor did it pass a table name into the first
|
||
parameter. The reason this worked is because the query has not been executed
|
||
using <cite>$this->db->insert()</cite> which resets values or reset directly using
|
||
<cite>$this->db->reset_query()</cite>.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">This method doesn’t work for batched inserts.</p>
|
||
</div>
|
||
<p><strong>$this->db->insert_batch()</strong></p>
|
||
<p>Generates an insert string based on the data you supply, and runs the
|
||
query. You can either pass an <strong>array</strong> or an <strong>object</strong> to the
|
||
function. Here is an example using an array:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'My title'</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'My Name'</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'My date'</span>
|
||
<span class="p">),</span>
|
||
<span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'Another title'</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'Another Name'</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'Another date'</span>
|
||
<span class="p">)</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert_batch</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
|
||
<span class="c1">// Produces: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date'), ('Another title', 'Another name', 'Another date')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The first parameter will contain the table name, the second is an
|
||
associative array of values.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values are escaped automatically producing safer queries.</p>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="updating-data">
|
||
<h2><a class="toc-backref" href="#id8">Updating Data</a><a class="headerlink" href="#updating-data" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->replace()</strong></p>
|
||
<p>This method executes a REPLACE statement, which is basically the SQL
|
||
standard for (optional) DELETE + INSERT, using <em>PRIMARY</em> and <em>UNIQUE</em>
|
||
keys as the determining factor.
|
||
In our case, it will save you from the need to implement complex
|
||
logics with different combinations of <code class="docutils literal"><span class="pre">select()</span></code>, <code class="docutils literal"><span class="pre">update()</span></code>,
|
||
<code class="docutils literal"><span class="pre">delete()</span></code> and <code class="docutils literal"><span class="pre">insert()</span></code> calls.</p>
|
||
<p>Example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'My title'</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'My Name'</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'My date'</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">replace</span><span class="p">(</span><span class="s1">'table'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Executes: REPLACE INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>In the above example, if we assume that the <em>title</em> field is our primary
|
||
key, then if a row containing ‘My title’ as the <em>title</em> value, that row
|
||
will be deleted with our new row data replacing it.</p>
|
||
<p>Usage of the <code class="docutils literal"><span class="pre">set()</span></code> method is also allowed and all fields are
|
||
automatically escaped, just like with <code class="docutils literal"><span class="pre">insert()</span></code>.</p>
|
||
<p><strong>$this->db->set()</strong></p>
|
||
<p>This function enables you to set values for inserts or updates.</p>
|
||
<p><strong>It can be used instead of passing a data array directly to the insert
|
||
or update functions:</strong></p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'name'</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span> <span class="c1">// Produces: INSERT INTO mytable (`name`) VALUES ('{$name}')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you use multiple function called they will be assembled properly
|
||
based on whether you are doing an insert or an update:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'name'</span><span class="p">,</span> <span class="nv">$name</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'title'</span><span class="p">,</span> <span class="nv">$title</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'status'</span><span class="p">,</span> <span class="nv">$status</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>set()</strong> will also accept an optional third parameter (<code class="docutils literal"><span class="pre">$escape</span></code>), that
|
||
will prevent data from being escaped if set to FALSE. To illustrate the
|
||
difference, here is <code class="docutils literal"><span class="pre">set()</span></code> used both with and without the escape
|
||
parameter.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'field'</span><span class="p">,</span> <span class="s1">'field+1'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span> <span class="c1">// gives UPDATE mytable SET field = field+1 WHERE id = 2</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="s1">'field'</span><span class="p">,</span> <span class="s1">'field+1'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span> <span class="c1">// gives UPDATE `mytable` SET `field` = 'field+1' WHERE `id` = 2</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can also pass an associative array to this function:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$array</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="nv">$name</span><span class="p">,</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$title</span><span class="p">,</span>
|
||
<span class="s1">'status'</span> <span class="o">=></span> <span class="nv">$status</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="nv">$array</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Or an object:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
|
||
<span class="cm">class Myclass {</span>
|
||
<span class="cm"> public $title = 'My Title';</span>
|
||
<span class="cm"> public $content = 'My Content';</span>
|
||
<span class="cm"> public $date = 'My Date';</span>
|
||
<span class="cm">}</span>
|
||
<span class="cm">*/</span>
|
||
|
||
<span class="nv">$object</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Myclass</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">set</span><span class="p">(</span><span class="nv">$object</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->update()</strong></p>
|
||
<p>Generates an update string and runs the query based on the data you
|
||
supply. You can pass an <strong>array</strong> or an <strong>object</strong> to the function. Here
|
||
is an example using an array:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$title</span><span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="nv">$name</span><span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="nv">$date</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
|
||
<span class="c1">// Produces:</span>
|
||
<span class="c1">//</span>
|
||
<span class="c1">// UPDATE mytable</span>
|
||
<span class="c1">// SET title = '{$title}', name = '{$name}', date = '{$date}'</span>
|
||
<span class="c1">// WHERE id = $id</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Or you can supply an object:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
|
||
<span class="cm">class Myclass {</span>
|
||
<span class="cm"> public $title = 'My Title';</span>
|
||
<span class="cm"> public $content = 'My Content';</span>
|
||
<span class="cm"> public $date = 'My Date';</span>
|
||
<span class="cm">}</span>
|
||
<span class="cm">*/</span>
|
||
|
||
<span class="nv">$object</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Myclass</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$object</span><span class="p">);</span>
|
||
<span class="c1">// Produces:</span>
|
||
<span class="c1">//</span>
|
||
<span class="c1">// UPDATE `mytable`</span>
|
||
<span class="c1">// SET `title` = '{$title}', `name` = '{$name}', `date` = '{$date}'</span>
|
||
<span class="c1">// WHERE id = `$id`</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values are escaped automatically producing safer queries.</p>
|
||
</div>
|
||
<p>You’ll notice the use of the $this->db->where() function, enabling you
|
||
to set the WHERE clause. You can optionally pass this information
|
||
directly into the update function as a string:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">,</span> <span class="s2">"id = 4"</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Or as an array:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'id'</span> <span class="o">=></span> <span class="nv">$id</span><span class="p">));</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You may also use the $this->db->set() function described above when
|
||
performing updates.</p>
|
||
<p><strong>$this->db->update_batch()</strong></p>
|
||
<p>Generates an update string based on the data you supply, and runs the query.
|
||
You can either pass an <strong>array</strong> or an <strong>object</strong> to the function.
|
||
Here is an example using an array:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
|
||
<span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'My title'</span> <span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'My Name 2'</span> <span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'My date 2'</span>
|
||
<span class="p">),</span>
|
||
<span class="k">array</span><span class="p">(</span>
|
||
<span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'Another title'</span> <span class="p">,</span>
|
||
<span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'Another Name 2'</span> <span class="p">,</span>
|
||
<span class="s1">'date'</span> <span class="o">=></span> <span class="s1">'Another date 2'</span>
|
||
<span class="p">)</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update_batch</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">,</span> <span class="s1">'title'</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Produces:</span>
|
||
<span class="c1">// UPDATE `mytable` SET `name` = CASE</span>
|
||
<span class="c1">// WHEN `title` = 'My title' THEN 'My Name 2'</span>
|
||
<span class="c1">// WHEN `title` = 'Another title' THEN 'Another Name 2'</span>
|
||
<span class="c1">// ELSE `name` END,</span>
|
||
<span class="c1">// `date` = CASE</span>
|
||
<span class="c1">// WHEN `title` = 'My title' THEN 'My date 2'</span>
|
||
<span class="c1">// WHEN `title` = 'Another title' THEN 'Another date 2'</span>
|
||
<span class="c1">// ELSE `date` END</span>
|
||
<span class="c1">// WHERE `title` IN ('My title','Another title')</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The first parameter will contain the table name, the second is an associative
|
||
array of values, the third parameter is the where key.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">All values are escaped automatically producing safer queries.</p>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last"><code class="docutils literal"><span class="pre">affected_rows()</span></code> won’t give you proper results with this method,
|
||
due to the very nature of how it works. Instead, <code class="docutils literal"><span class="pre">update_batch()</span></code>
|
||
returns the number of rows affected.</p>
|
||
</div>
|
||
<p><strong>$this->db->get_compiled_update()</strong></p>
|
||
<p>This works exactly the same way as <code class="docutils literal"><span class="pre">$this->db->get_compiled_insert()</span></code> except
|
||
that it produces an UPDATE SQL string instead of an INSERT SQL string.</p>
|
||
<p>For more information view documentation for <cite>$this->db->get_compiled_insert()</cite>.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">This method doesn’t work for batched updates.</p>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="deleting-data">
|
||
<h2><a class="toc-backref" href="#id9">Deleting Data</a><a class="headerlink" href="#deleting-data" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->delete()</strong></p>
|
||
<p>Generates a delete SQL string and runs the query.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">delete</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'id'</span> <span class="o">=></span> <span class="nv">$id</span><span class="p">));</span> <span class="c1">// Produces: // DELETE FROM mytable // WHERE id = $id</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The first parameter is the table name, the second is the where clause.
|
||
You can also use the where() or or_where() functions instead of passing
|
||
the data to the second parameter of the function:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">delete</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Produces:</span>
|
||
<span class="c1">// DELETE FROM mytable</span>
|
||
<span class="c1">// WHERE id = $id</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>An array of table names can be passed into delete() if you would like to
|
||
delete data from more than 1 table.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$tables</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'table1'</span><span class="p">,</span> <span class="s1">'table2'</span><span class="p">,</span> <span class="s1">'table3'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="s1">'5'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">delete</span><span class="p">(</span><span class="nv">$tables</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If you want to delete all data from a table, you can use the truncate()
|
||
function, or empty_table().</p>
|
||
<p><strong>$this->db->empty_table()</strong></p>
|
||
<p>Generates a delete SQL string and runs the
|
||
query.:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">empty_table</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span> <span class="c1">// Produces: DELETE FROM mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>$this->db->truncate()</strong></p>
|
||
<p>Generates a truncate SQL string and runs the query.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">from</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">truncate</span><span class="p">();</span>
|
||
|
||
<span class="c1">// or</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">truncate</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
|
||
<span class="c1">// Produce:</span>
|
||
<span class="c1">// TRUNCATE mytable</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">If the TRUNCATE command isn’t available, truncate() will
|
||
execute as “DELETE FROM table”.</p>
|
||
</div>
|
||
<p><strong>$this->db->get_compiled_delete()</strong></p>
|
||
<p>This works exactly the same way as <code class="docutils literal"><span class="pre">$this->db->get_compiled_insert()</span></code> except
|
||
that it produces a DELETE SQL string instead of an INSERT SQL string.</p>
|
||
<p>For more information view documentation for $this->db->get_compiled_insert().</p>
|
||
</div>
|
||
<div class="section" id="method-chaining">
|
||
<h2><a class="toc-backref" href="#id10">Method Chaining</a><a class="headerlink" href="#method-chaining" title="Permalink to this headline">¶</a></h2>
|
||
<p>Method chaining allows you to simplify your syntax by connecting
|
||
multiple functions. Consider this example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'title'</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'id'</span><span class="p">,</span> <span class="nv">$id</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">limit</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="query-builder-caching">
|
||
<span id="ar-caching"></span><h2><a class="toc-backref" href="#id11">Query Builder Caching</a><a class="headerlink" href="#query-builder-caching" title="Permalink to this headline">¶</a></h2>
|
||
<p>While not “true” caching, Query Builder enables you to save (or “cache”)
|
||
certain parts of your queries for reuse at a later point in your
|
||
script’s execution. Normally, when an Query Builder call is completed,
|
||
all stored information is reset for the next call. With caching, you can
|
||
prevent this reset, and reuse information easily.</p>
|
||
<p>Cached calls are cumulative. If you make 2 cached select() calls, and
|
||
then 2 uncached select() calls, this will result in 4 select() calls.
|
||
There are three Caching functions available:</p>
|
||
<p><strong>$this->db->start_cache()</strong></p>
|
||
<p>This function must be called to begin caching. All Query Builder queries
|
||
of the correct type (see below for supported queries) are stored for
|
||
later use.</p>
|
||
<p><strong>$this->db->stop_cache()</strong></p>
|
||
<p>This function can be called to stop caching.</p>
|
||
<p><strong>$this->db->flush_cache()</strong></p>
|
||
<p>This function deletes all items from the Query Builder cache.</p>
|
||
<div class="section" id="an-example-of-caching">
|
||
<h3>An example of caching<a class="headerlink" href="#an-example-of-caching" title="Permalink to this headline">¶</a></h3>
|
||
<p>Here’s a usage example:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">start_cache</span><span class="p">();</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">stop_cache</span><span class="p">();</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'tablename'</span><span class="p">);</span>
|
||
<span class="c1">//Generates: SELECT `field1` FROM (`tablename`)</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'field2'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'tablename'</span><span class="p">);</span>
|
||
<span class="c1">//Generates: SELECT `field1`, `field2` FROM (`tablename`)</span>
|
||
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">flush_cache</span><span class="p">();</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="s1">'field2'</span><span class="p">);</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'tablename'</span><span class="p">);</span>
|
||
<span class="c1">//Generates: SELECT `field2` FROM (`tablename`)</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">The following statements can be cached: select, from, join,
|
||
where, like, group_by, having, order_by</p>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="resetting-query-builder">
|
||
<h2><a class="toc-backref" href="#id12">Resetting Query Builder</a><a class="headerlink" href="#resetting-query-builder" title="Permalink to this headline">¶</a></h2>
|
||
<p><strong>$this->db->reset_query()</strong></p>
|
||
<p>Resetting Query Builder allows you to start fresh with your query without
|
||
executing it first using a method like $this->db->get() or $this->db->insert().
|
||
Just like the methods that execute a query, this will <em>not</em> reset items you’ve
|
||
cached using <a class="reference internal" href="#query-builder-caching">Query Builder Caching</a>.</p>
|
||
<p>This is useful in situations where you are using Query Builder to generate SQL
|
||
(ex. <code class="docutils literal"><span class="pre">$this->db->get_compiled_select()</span></code>) but then choose to, for instance,
|
||
run the query:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="c1">// Note that the second parameter of the get_compiled_select method is FALSE</span>
|
||
<span class="nv">$sql</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">select</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">,</span><span class="s1">'field2'</span><span class="p">))</span>
|
||
<span class="o">-></span><span class="na">where</span><span class="p">(</span><span class="s1">'field3'</span><span class="p">,</span><span class="mi">5</span><span class="p">)</span>
|
||
<span class="o">-></span><span class="na">get_compiled_select</span><span class="p">(</span><span class="s1">'mytable'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
|
||
|
||
<span class="c1">// ...</span>
|
||
<span class="c1">// Do something crazy with the SQL code... like add it to a cron script for</span>
|
||
<span class="c1">// later execution or something...</span>
|
||
<span class="c1">// ...</span>
|
||
|
||
<span class="nv">$data</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">()</span><span class="o">-></span><span class="na">result_array</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Would execute and return an array of results of the following query:</span>
|
||
<span class="c1">// SELECT field1, field1 from mytable where field3 = 5;</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">Double calls to <code class="docutils literal"><span class="pre">get_compiled_select()</span></code> while you’re using the
|
||
Query Builder Caching functionality and NOT resetting your queries
|
||
will results in the cache being merged twice. That in turn will
|
||
i.e. if you’re caching a <code class="docutils literal"><span class="pre">select()</span></code> - select the same field twice.</p>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="class-reference">
|
||
<h2><a class="toc-backref" href="#id13">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2>
|
||
<dl class="class">
|
||
<dt id="CI_DB_query_builder">
|
||
<em class="property">class </em><code class="descname">CI_DB_query_builder</code><a class="headerlink" href="#CI_DB_query_builder" title="Permalink to this definition">¶</a></dt>
|
||
<dd><dl class="method">
|
||
<dt id="CI_DB_query_builder::reset_query">
|
||
<code class="descname">reset_query</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::reset_query" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Resets the current Query Builder state. Useful when you want
|
||
to build a query that can be cancelled under certain conditions.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::start_cache">
|
||
<code class="descname">start_cache</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::start_cache" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Starts the Query Builder cache.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::stop_cache">
|
||
<code class="descname">stop_cache</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::stop_cache" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Stops the Query Builder cache.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::flush_cache">
|
||
<code class="descname">flush_cache</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::flush_cache" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Empties the Query Builder cache.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::set_dbprefix">
|
||
<code class="descname">set_dbprefix</code><span class="sig-paren">(</span><span class="optional">[</span><em>$prefix = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::set_dbprefix" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$prefix</strong> (<em>string</em>) – The new prefix to use</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The DB prefix in use</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Sets the database prefix, without having to reconnect.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::dbprefix">
|
||
<code class="descname">dbprefix</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::dbprefix" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – The table name to prefix</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The prefixed table name</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Prepends a database prefix, if one exists in configuration.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::count_all_results">
|
||
<code class="descname">count_all_results</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::count_all_results" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset values for SELECTs</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Number of rows in the query result</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates a platform-specific query string that counts
|
||
all records returned by an Query Builder query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get">
|
||
<code class="descname">get</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$limit = NULL</em><span class="optional">[</span>, <em>$offset = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – The table to query</li>
|
||
<li><strong>$limit</strong> (<em>int</em>) – The LIMIT clause</li>
|
||
<li><strong>$offset</strong> (<em>int</em>) – The OFFSET clause</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_result instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_result</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and runs SELECT statement based on the already
|
||
called Query Builder methods.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get_where">
|
||
<code class="descname">get_where</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$where = NULL</em><span class="optional">[</span>, <em>$limit = NULL</em><span class="optional">[</span>, <em>$offset = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get_where" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>mixed</em>) – The table(s) to fetch data from; string or array</li>
|
||
<li><strong>$where</strong> (<em>string</em>) – The WHERE clause</li>
|
||
<li><strong>$limit</strong> (<em>int</em>) – The LIMIT clause</li>
|
||
<li><strong>$offset</strong> (<em>int</em>) – The OFFSET clause</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_result instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_result</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Same as <code class="docutils literal"><span class="pre">get()</span></code>, but also allows the WHERE to be added directly.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::select">
|
||
<code class="descname">select</code><span class="sig-paren">(</span><span class="optional">[</span><em>$select = '*'</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::select" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$select</strong> (<em>string</em>) – The SELECT portion of a query</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a SELECT clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::select_avg">
|
||
<code class="descname">select_avg</code><span class="sig-paren">(</span><span class="optional">[</span><em>$select = ''</em><span class="optional">[</span>, <em>$alias = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::select_avg" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$select</strong> (<em>string</em>) – Field to compute the average of</li>
|
||
<li><strong>$alias</strong> (<em>string</em>) – Alias for the resulting value name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a SELECT AVG(field) clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::select_max">
|
||
<code class="descname">select_max</code><span class="sig-paren">(</span><span class="optional">[</span><em>$select = ''</em><span class="optional">[</span>, <em>$alias = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::select_max" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$select</strong> (<em>string</em>) – Field to compute the maximum of</li>
|
||
<li><strong>$alias</strong> (<em>string</em>) – Alias for the resulting value name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a SELECT MAX(field) clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::select_min">
|
||
<code class="descname">select_min</code><span class="sig-paren">(</span><span class="optional">[</span><em>$select = ''</em><span class="optional">[</span>, <em>$alias = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::select_min" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$select</strong> (<em>string</em>) – Field to compute the minimum of</li>
|
||
<li><strong>$alias</strong> (<em>string</em>) – Alias for the resulting value name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a SELECT MIN(field) clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::select_sum">
|
||
<code class="descname">select_sum</code><span class="sig-paren">(</span><span class="optional">[</span><em>$select = ''</em><span class="optional">[</span>, <em>$alias = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::select_sum" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$select</strong> (<em>string</em>) – Field to compute the sum of</li>
|
||
<li><strong>$alias</strong> (<em>string</em>) – Alias for the resulting value name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a SELECT SUM(field) clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::distinct">
|
||
<code class="descname">distinct</code><span class="sig-paren">(</span><span class="optional">[</span><em>$val = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::distinct" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$val</strong> (<em>bool</em>) – Desired value of the “distinct” flag</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Sets a flag which tells the query builder to add
|
||
a DISTINCT clause to the SELECT portion of the query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::from">
|
||
<code class="descname">from</code><span class="sig-paren">(</span><em>$from</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::from" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$from</strong> (<em>mixed</em>) – Table name(s); string or array</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Specifies the FROM clause of a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::join">
|
||
<code class="descname">join</code><span class="sig-paren">(</span><em>$table</em>, <em>$cond</em><span class="optional">[</span>, <em>$type = ''</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::join" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name to join</li>
|
||
<li><strong>$cond</strong> (<em>string</em>) – The JOIN ON condition</li>
|
||
<li><strong>$type</strong> (<em>string</em>) – The JOIN type</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a JOIN clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::where">
|
||
<code class="descname">where</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::where" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Name of field to compare, or associative array</li>
|
||
<li><strong>$value</strong> (<em>mixed</em>) – If a single key, compared to this value</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates the WHERE portion of the query.
|
||
Separates multiple calls with ‘AND’.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_where">
|
||
<code class="descname">or_where</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_where" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Name of field to compare, or associative array</li>
|
||
<li><strong>$value</strong> (<em>mixed</em>) – If a single key, compared to this value</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates the WHERE portion of the query.
|
||
Separates multiple calls with ‘OR’.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_where_in">
|
||
<code class="descname">or_where_in</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">[</span>, <em>$values = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_where_in" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>string</em>) – The field to search</li>
|
||
<li><strong>$values</strong> (<em>array</em>) – The values searched on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates a WHERE field IN(‘item’, ‘item’) SQL query,
|
||
joined with ‘OR’ if appropriate.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_where_not_in">
|
||
<code class="descname">or_where_not_in</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">[</span>, <em>$values = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_where_not_in" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>string</em>) – The field to search</li>
|
||
<li><strong>$values</strong> (<em>array</em>) – The values searched on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates a WHERE field NOT IN(‘item’, ‘item’) SQL query,
|
||
joined with ‘OR’ if appropriate.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::where_in">
|
||
<code class="descname">where_in</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">[</span>, <em>$values = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::where_in" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>string</em>) – Name of field to examine</li>
|
||
<li><strong>$values</strong> (<em>array</em>) – Array of target values</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates a WHERE field IN(‘item’, ‘item’) SQL query,
|
||
joined with ‘AND’ if appropriate.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::where_not_in">
|
||
<code class="descname">where_not_in</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">[</span>, <em>$values = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::where_not_in" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>string</em>) – Name of field to examine</li>
|
||
<li><strong>$values</strong> (<em>array</em>) – Array of target values</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">DB_query_builder instance</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">object</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Generates a WHERE field NOT IN(‘item’, ‘item’) SQL query,
|
||
joined with ‘AND’ if appropriate.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::group_start">
|
||
<code class="descname">group_start</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::group_start" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Starts a group expression, using ANDs for the conditions inside it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_group_start">
|
||
<code class="descname">or_group_start</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_group_start" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Starts a group expression, using ORs for the conditions inside it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::not_group_start">
|
||
<code class="descname">not_group_start</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::not_group_start" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Starts a group expression, using AND NOTs for the conditions inside it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_not_group_start">
|
||
<code class="descname">or_not_group_start</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_not_group_start" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">CI_DB_query_builder instance (method chaining)</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">CI_DB_query_builder</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Starts a group expression, using OR NOTs for the conditions inside it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::group_end">
|
||
<code class="descname">group_end</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::group_end" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">DB_query_builder instance</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">object</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Ends a group expression.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::like">
|
||
<code class="descname">like</code><span class="sig-paren">(</span><em>$field</em><span class="optional">[</span>, <em>$match = ''</em><span class="optional">[</span>, <em>$side = 'both'</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::like" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$field</strong> (<em>string</em>) – Field name</li>
|
||
<li><strong>$match</strong> (<em>string</em>) – Text portion to match</li>
|
||
<li><strong>$side</strong> (<em>string</em>) – Which side of the expression to put the ‘%’ wildcard on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a LIKE clause to a query, separating multiple calls with AND.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_like">
|
||
<code class="descname">or_like</code><span class="sig-paren">(</span><em>$field</em><span class="optional">[</span>, <em>$match = ''</em><span class="optional">[</span>, <em>$side = 'both'</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_like" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$field</strong> (<em>string</em>) – Field name</li>
|
||
<li><strong>$match</strong> (<em>string</em>) – Text portion to match</li>
|
||
<li><strong>$side</strong> (<em>string</em>) – Which side of the expression to put the ‘%’ wildcard on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a LIKE clause to a query, separating multiple class with OR.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::not_like">
|
||
<code class="descname">not_like</code><span class="sig-paren">(</span><em>$field</em><span class="optional">[</span>, <em>$match = ''</em><span class="optional">[</span>, <em>$side = 'both'</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::not_like" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$field</strong> (<em>string</em>) – Field name</li>
|
||
<li><strong>$match</strong> (<em>string</em>) – Text portion to match</li>
|
||
<li><strong>$side</strong> (<em>string</em>) – Which side of the expression to put the ‘%’ wildcard on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a NOT LIKE clause to a query, separating multiple calls with AND.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_not_like">
|
||
<code class="descname">or_not_like</code><span class="sig-paren">(</span><em>$field</em><span class="optional">[</span>, <em>$match = ''</em><span class="optional">[</span>, <em>$side = 'both'</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_not_like" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$field</strong> (<em>string</em>) – Field name</li>
|
||
<li><strong>$match</strong> (<em>string</em>) – Text portion to match</li>
|
||
<li><strong>$side</strong> (<em>string</em>) – Which side of the expression to put the ‘%’ wildcard on</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a NOT LIKE clause to a query, separating multiple calls with OR.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::having">
|
||
<code class="descname">having</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::having" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Identifier (string) or associative array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Value sought if $key is an identifier</li>
|
||
<li><strong>$escape</strong> (<em>string</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a HAVING clause to a query, separating multiple calls with AND.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::or_having">
|
||
<code class="descname">or_having</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::or_having" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Identifier (string) or associative array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Value sought if $key is an identifier</li>
|
||
<li><strong>$escape</strong> (<em>string</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a HAVING clause to a query, separating multiple calls with OR.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::group_by">
|
||
<code class="descname">group_by</code><span class="sig-paren">(</span><em>$by</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::group_by" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$by</strong> (<em>mixed</em>) – Field(s) to group by; string or array</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds a GROUP BY clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::order_by">
|
||
<code class="descname">order_by</code><span class="sig-paren">(</span><em>$orderby</em><span class="optional">[</span>, <em>$direction = ''</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::order_by" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$orderby</strong> (<em>string</em>) – Field to order by</li>
|
||
<li><strong>$direction</strong> (<em>string</em>) – The order requested - ASC, DESC or random</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds an ORDER BY clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::limit">
|
||
<code class="descname">limit</code><span class="sig-paren">(</span><em>$value</em><span class="optional">[</span>, <em>$offset = 0</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::limit" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$value</strong> (<em>int</em>) – Number of rows to limit the results to</li>
|
||
<li><strong>$offset</strong> (<em>int</em>) – Number of rows to skip</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds LIMIT and OFFSET clauses to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::offset">
|
||
<code class="descname">offset</code><span class="sig-paren">(</span><em>$offset</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::offset" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$offset</strong> (<em>int</em>) – Number of rows to skip</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds an OFFSET clause to a query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::set">
|
||
<code class="descname">set</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = ''</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::set" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Field name, or an array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Field value, if $key is a single field</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds field/value pairs to be passed later to <code class="docutils literal"><span class="pre">insert()</span></code>,
|
||
<code class="docutils literal"><span class="pre">update()</span></code> or <code class="docutils literal"><span class="pre">replace()</span></code>.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::insert">
|
||
<code class="descname">insert</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$set = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::insert" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$set</strong> (<em>array</em>) – An associative array of field/value pairs</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes an INSERT statement.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::insert_batch">
|
||
<code class="descname">insert_batch</code><span class="sig-paren">(</span><em>$table</em><span class="optional">[</span>, <em>$set = NULL</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">[</span>, <em>$batch_size = 100</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::insert_batch" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$set</strong> (<em>array</em>) – Data to insert</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
<li><strong>$batch_size</strong> (<em>int</em>) – Count of rows to insert at once</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Number of rows inserted or FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes batch <code class="docutils literal"><span class="pre">INSERT</span></code> statements.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">When more than <code class="docutils literal"><span class="pre">$batch_size</span></code> rows are provided, multiple
|
||
<code class="docutils literal"><span class="pre">INSERT</span></code> queries will be executed, each trying to insert
|
||
up to <code class="docutils literal"><span class="pre">$batch_size</span></code> rows.</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::set_insert_batch">
|
||
<code class="descname">set_insert_batch</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = ''</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::set_insert_batch" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Field name or an array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Field value, if $key is a single field</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds field/value pairs to be inserted in a table later via <code class="docutils literal"><span class="pre">insert_batch()</span></code>.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::update">
|
||
<code class="descname">update</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$set = NULL</em><span class="optional">[</span>, <em>$where = NULL</em><span class="optional">[</span>, <em>$limit = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::update" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$set</strong> (<em>array</em>) – An associative array of field/value pairs</li>
|
||
<li><strong>$where</strong> (<em>string</em>) – The WHERE clause</li>
|
||
<li><strong>$limit</strong> (<em>int</em>) – The LIMIT clause</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes an UPDATE statement.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::update_batch">
|
||
<code class="descname">update_batch</code><span class="sig-paren">(</span><em>$table</em><span class="optional">[</span>, <em>$set = NULL</em><span class="optional">[</span>, <em>$value = NULL</em><span class="optional">[</span>, <em>$batch_size = 100</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::update_batch" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$set</strong> (<em>array</em>) – Field name, or an associative array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Field value, if $set is a single field</li>
|
||
<li><strong>$batch_size</strong> (<em>int</em>) – Count of conditions to group in a single query</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Number of rows updated or FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes batch <code class="docutils literal"><span class="pre">UPDATE</span></code> statements.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">When more than <code class="docutils literal"><span class="pre">$batch_size</span></code> field/value pairs are provided,
|
||
multiple queries will be executed, each handling up to
|
||
<code class="docutils literal"><span class="pre">$batch_size</span></code> field/value pairs.</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::set_update_batch">
|
||
<code class="descname">set_update_batch</code><span class="sig-paren">(</span><em>$key</em><span class="optional">[</span>, <em>$value = ''</em><span class="optional">[</span>, <em>$escape = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::set_update_batch" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$key</strong> (<em>mixed</em>) – Field name or an array of field/value pairs</li>
|
||
<li><strong>$value</strong> (<em>string</em>) – Field value, if $key is a single field</li>
|
||
<li><strong>$escape</strong> (<em>bool</em>) – Whether to escape values and identifiers</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining)</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_DB_query_builder</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Adds field/value pairs to be updated in a table later via <code class="docutils literal"><span class="pre">update_batch()</span></code>.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::replace">
|
||
<code class="descname">replace</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$set = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::replace" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$set</strong> (<em>array</em>) – An associative array of field/value pairs</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes a REPLACE statement.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::delete">
|
||
<code class="descname">delete</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$where = ''</em><span class="optional">[</span>, <em>$limit = NULL</em><span class="optional">[</span>, <em>$reset_data = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::delete" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>mixed</em>) – The table(s) to delete from; string or array</li>
|
||
<li><strong>$where</strong> (<em>string</em>) – The WHERE clause</li>
|
||
<li><strong>$limit</strong> (<em>int</em>) – The LIMIT clause</li>
|
||
<li><strong>$reset_data</strong> (<em>bool</em>) – TRUE to reset the query “write” clause</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_DB_query_builder instance (method chaining) or FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles and executes a DELETE query.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::truncate">
|
||
<code class="descname">truncate</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::truncate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Executes a TRUNCATE statement on a table.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">If the database platform in use doesn’t support TRUNCATE,
|
||
a DELETE statement will be used instead.</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::empty_table">
|
||
<code class="descname">empty_table</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::empty_table" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Deletes all records from a table via a DELETE statement.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get_compiled_select">
|
||
<code class="descname">get_compiled_select</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get_compiled_select" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset the current QB values or not</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The compiled SQL statement as a string</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles a SELECT statement and returns it as a string.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get_compiled_insert">
|
||
<code class="descname">get_compiled_insert</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get_compiled_insert" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset the current QB values or not</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The compiled SQL statement as a string</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles an INSERT statement and returns it as a string.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get_compiled_update">
|
||
<code class="descname">get_compiled_update</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get_compiled_update" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset the current QB values or not</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The compiled SQL statement as a string</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles an UPDATE statement and returns it as a string.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="CI_DB_query_builder::get_compiled_delete">
|
||
<code class="descname">get_compiled_delete</code><span class="sig-paren">(</span><span class="optional">[</span><em>$table = ''</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_DB_query_builder::get_compiled_delete" title="Permalink to this definition">¶</a></dt>
|
||
<dd><table class="docutils field-list" frame="void" rules="none">
|
||
<col class="field-name" />
|
||
<col class="field-body" />
|
||
<tbody valign="top">
|
||
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
|
||
<li><strong>$table</strong> (<em>string</em>) – Table name</li>
|
||
<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset the current QB values or not</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The compiled SQL statement as a string</p>
|
||
</td>
|
||
</tr>
|
||
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Compiles a DELETE statement and returns it as a string.</p>
|
||
</dd></dl>
|
||
|
||
</dd></dl>
|
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|
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