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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
<refentry xml:id="function.db2-primary-keys" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>db2_primary_keys</refname>
<refpurpose>
Returns a result set listing primary keys for a table
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>resource</type><methodname>db2_primary_keys</methodname>
<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
<methodparam><type class="union"><type>string</type><type>null</type></type><parameter>qualifier</parameter></methodparam>
<methodparam><type class="union"><type>string</type><type>null</type></type><parameter>schema</parameter></methodparam>
<methodparam><type>string</type><parameter>table_name</parameter></methodparam>
</methodsynopsis>
<para>
Returns a result set listing the primary keys for a table.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>connection</parameter></term>
<listitem>
<para>
A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>qualifier</parameter></term>
<listitem>
<para>
A qualifier for DB2 databases running on OS/390 or z/OS servers. For
other databases, pass &null; or an empty string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>schema</parameter></term>
<listitem>
<para>
The schema which contains the tables. If <parameter>schema</parameter>
is &null;, <function>db2_primary_keys</function> matches the schema for
the current connection.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>table_name</parameter></term>
<listitem>
<para>
The name of the table.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a statement resource with a result set containing rows describing
the primary keys for the specified table. The result set is composed of the
following columns:
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>Column name</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry>TABLE_CAT</entry>
<entry>
Name of the catalog for the table containing the primary key. The
value is NULL if this table does not have catalogs.
</entry>
</row>
<row>
<entry>TABLE_SCHEM</entry>
<entry>
Name of the schema for the table containing the primary key.
</entry>
</row>
<row>
<entry>TABLE_NAME</entry>
<entry>Name of the table containing the primary key.</entry>
</row>
<row>
<entry>COLUMN_NAME</entry>
<entry>Name of the column containing the primary key.</entry>
</row>
<row>
<entry>KEY_SEQ</entry>
<entry>1-indexed position of the column in the key.</entry>
</row>
<row>
<entry>PK_NAME</entry>
<entry>The name of the primary key.</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<!-- Use when examples exist
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>db2_primary_keys</function> example</title>
<para>
Any text that describes the purpose of the example, or
what goes on in the example should go here (inside the
<example> tag, not out
</para>
<programlisting role="php">
<![CDATA[
<?php
if ($anexample === true) {
echo 'Use the PEAR Coding Standards';
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Use the PEAR Coding Standards
]]>
</screen>
</example>
</para>
</refsect1>
-->
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>db2_column_privileges</function></member>
<member><function>db2_columns</function></member>
<member><function>db2_foreign_keys</function></member>
<member><function>db2_procedure_columns</function></member>
<member><function>db2_procedures</function></member>
<member><function>db2_special_columns</function></member>
<member><function>db2_statistics</function></member>
<member><function>db2_table_privileges</function></member>
<member><function>db2_tables</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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sgml-parent-document:nil
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