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aggregates, conversions, functions, operators, operator classes, schemas, types, and tablespaces. Fold the existing implementations of alter domain owner and alter database owner in with these. Christopher Kings-Lynne
139 lines
3.5 KiB
Plaintext
139 lines
3.5 KiB
Plaintext
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$PostgreSQL: pgsql/doc/src/sgml/ref/alter_function.sgml,v 1.5 2004/06/25 21:55:50 tgl Exp $
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PostgreSQL documentation
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-->
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<refentry id="SQL-ALTERFUNCTION">
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<refmeta>
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<refentrytitle id="SQL-ALTERFUNCTION-TITLE">ALTER FUNCTION</refentrytitle>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>ALTER FUNCTION</refname>
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<refpurpose>change the definition of a function</refpurpose>
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</refnamediv>
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<indexterm zone="sql-alterfunction">
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<primary>ALTER FUNCTION</primary>
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</indexterm>
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<refsynopsisdiv>
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<synopsis>
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ALTER FUNCTION <replaceable>name</replaceable> ( [ <replaceable class="parameter">type</replaceable> [, ...] ] ) RENAME TO <replaceable>newname</replaceable>
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ALTER FUNCTION <replaceable>name</replaceable> ( [ <replaceable class="parameter">type</replaceable> [, ...] ] ) OWNER TO <replaceable>newowner</replaceable>
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</synopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>ALTER FUNCTION</command> changes the definition of a
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function.
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</para>
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</refsect1>
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<refsect1>
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<title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><replaceable class="parameter">name</replaceable></term>
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<listitem>
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<para>
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The name (optionally schema-qualified) of an existing function.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">type</replaceable></term>
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<listitem>
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<para>
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The data type of an argument of the function.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">newname</replaceable></term>
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<listitem>
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<para>
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The new name of the function.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">newowner</replaceable></term>
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<listitem>
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<para>
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The new owner of the function.
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To change the owner of a function, you must be a superuser.
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Note that if the function is marked
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<literal>SECURITY DEFINER</literal>,
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it will subsequently execute as the new owner.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>
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To rename the function <literal>sqrt</literal> for type
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<type>integer</type> to <literal>square_root</literal>:
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<programlisting>
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ALTER FUNCTION sqrt(integer) RENAME TO square_root;
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</programlisting>
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</para>
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<para>
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To change the owner of the function <literal>sqrt</literal> for type
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<type>integer</type> to <literal>joe</literal>:
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<programlisting>
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ALTER FUNCTION sqrt(integer) OWNER TO joe;
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</programlisting>
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</para>
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</refsect1>
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<refsect1>
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<title>Compatibility</title>
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<para>
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There is an <command>ALTER FUNCTION</command> statement in the SQL
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standard, but it does not provide the option to rename the
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function or change the owner.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<simplelist type="inline">
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<member><xref linkend="sql-createfunction" endterm="sql-createfunction-title"></member>
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<member><xref linkend="sql-dropfunction" endterm="sql-dropfunction-title"></member>
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</simplelist>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:nil
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"../reference.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:"/usr/lib/sgml/catalog"
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sgml-local-ecat-files:nil
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End:
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-->
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