ref.pgsql.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>PostgreSQL Functions</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.pgsql.html">PostgreSQL</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.pg-affected-rows.html">pg_affected_rows</a></div> <div class="up"><a href="book.pgsql.html">PostgreSQL</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1 class="title">PostgreSQL Functions</h1> <div class="partintro">  <div id="pgsql.notes" class="section">  <h2 class="title">Notes</h2>   <blockquote><p><b class="note">Note</b>:          Not all functions are supported by all builds. It depends on your     libpq (The PostgreSQL C client library) version and how libpq is     compiled. If PHP PostgreSQL extensions are missing, then it is because     your libpq version does not support them.     <br />   </p></blockquote>     <blockquote><p><b class="note">Note</b>:          Most PostgreSQL functions accept <i><tt class="parameter">connection</tt></i> as     the first optional parameter. If it is not provided, the last opened     connection is used. If it doesn&#039;t exist, functions return <b><tt>FALSE</tt></b>.    <br />   </p></blockquote>   <blockquote><p><b class="note">Note</b>:          PostgreSQL automatically folds all identifiers (e.g. table/column names)     to lower-case values at object creation time and at query time.      To force the use of mixed or upper case identifiers, you must escape     the identifier using double quotes (&quot;&quot;).    <br />   </p></blockquote>   <blockquote><p><b class="note">Note</b>:          PostgreSQL does not have special commands for fetching database schema     information (eg. all the tables in the current database).  Instead, there     is a standard schema named <i>information_schema</i> in     PostgreSQL 7.4 and above containing     system views with all the necessary information, in an easily     queryable form.  See the <a href="http://www.postgresql.org/docs/current/interactive/" class="link external">&raquo; PostgreSQL Documentation</a>     for full details.      <br />   </p></blockquote>  </div> </div><h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="function.pg-affected-rows.html">pg_affected_rows</a> 鈥

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