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118 lines
3.1 KiB
Plaintext
118 lines
3.1 KiB
Plaintext
<!--
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$PostgreSQL: pgsql/doc/src/sgml/ref/alter_conversion.sgml,v 1.8 2006/09/16 00:30:16 momjian Exp $
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PostgreSQL documentation
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-->
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<refentry id="SQL-ALTERCONVERSION">
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<refmeta>
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<refentrytitle id="SQL-ALTERCONVERSION-TITLE">ALTER CONVERSION</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 CONVERSION</refname>
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<refpurpose>change the definition of a conversion</refpurpose>
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</refnamediv>
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<indexterm zone="sql-alterconversion">
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<primary>ALTER CONVERSION</primary>
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</indexterm>
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<refsynopsisdiv>
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<synopsis>
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ALTER CONVERSION <replaceable>name</replaceable> RENAME TO <replaceable>newname</replaceable>
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ALTER CONVERSION <replaceable>name</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 CONVERSION</command> changes the definition of a
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conversion.
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</para>
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<para>
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You must own the conversion to use <command>ALTER CONVERSION</>.
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To alter the owner, you must also be a direct or indirect member of the new
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owning role, and that role must have <literal>CREATE</literal> privilege on
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the conversion's schema. (These restrictions enforce that altering the
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owner doesn't do anything you couldn't do by dropping and recreating the
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conversion. However, a superuser can alter ownership of any conversion
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anyway.)
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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 conversion.
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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 conversion.
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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 conversion.
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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 conversion <literal>iso_8859_1_to_utf8</literal> to
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<literal>latin1_to_unicode</literal>:
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<programlisting>
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ALTER CONVERSION iso_8859_1_to_utf8 RENAME TO latin1_to_unicode;
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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 conversion <literal>iso_8859_1_to_utf8</literal> to
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<literal>joe</literal>:
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<programlisting>
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ALTER CONVERSION iso_8859_1_to_utf8 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 no <command>ALTER CONVERSION</command> statement in the SQL
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standard.
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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-createconversion" endterm="sql-createconversion-title"></member>
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<member><xref linkend="sql-dropconversion" endterm="sql-dropconversion-title"></member>
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</simplelist>
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</refsect1>
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</refentry>
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