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postgres/doc/src/sgml/ref/alter_conversion.sgml
Peter Eisentraut bb4eefe7bf doc: Improve DocBook XML validity
DocBook XML is superficially compatible with DocBook SGML but has a
slightly stricter DTD that we have been violating in a few cases.
Although XSLT doesn't care whether the document is valid, the style
sheets don't necessarily process invalid documents correctly, so we need
to work toward fixing this.

This first commit moves the indexterms in refentry elements to an
allowed position.  It has no impact on the output.
2014-02-23 21:31:08 -05:00

128 lines
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<!--
doc/src/sgml/ref/alter_conversion.sgml
PostgreSQL documentation
-->
<refentry id="SQL-ALTERCONVERSION">
<indexterm zone="sql-alterconversion">
<primary>ALTER CONVERSION</primary>
</indexterm>
<refmeta>
<refentrytitle>ALTER CONVERSION</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER CONVERSION</refname>
<refpurpose>change the definition of a conversion</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
ALTER CONVERSION <replaceable>name</replaceable> RENAME TO <replaceable>new_name</replaceable>
ALTER CONVERSION <replaceable>name</replaceable> OWNER TO <replaceable>new_owner</replaceable>
ALTER CONVERSION <replaceable>name</replaceable> SET SCHEMA <replaceable>new_schema</replaceable>
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER CONVERSION</command> changes the definition of a
conversion.
</para>
<para>
You must own the conversion to use <command>ALTER CONVERSION</>.
To alter the owner, you must also be a direct or indirect member of the new
owning role, and that role must have <literal>CREATE</literal> privilege on
the conversion's schema. (These restrictions enforce that altering the
owner doesn't do anything you couldn't do by dropping and recreating the
conversion. However, a superuser can alter ownership of any conversion
anyway.)
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name (optionally schema-qualified) of an existing conversion.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_name</replaceable></term>
<listitem>
<para>
The new name of the conversion.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_owner</replaceable></term>
<listitem>
<para>
The new owner of the conversion.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_schema</replaceable></term>
<listitem>
<para>
The new schema for the conversion.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
To rename the conversion <literal>iso_8859_1_to_utf8</literal> to
<literal>latin1_to_unicode</literal>:
<programlisting>
ALTER CONVERSION iso_8859_1_to_utf8 RENAME TO latin1_to_unicode;
</programlisting>
</para>
<para>
To change the owner of the conversion <literal>iso_8859_1_to_utf8</literal> to
<literal>joe</literal>:
<programlisting>
ALTER CONVERSION iso_8859_1_to_utf8 OWNER TO joe;
</programlisting></para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>ALTER CONVERSION</command> statement in the SQL
standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createconversion"></member>
<member><xref linkend="sql-dropconversion"></member>
</simplelist>
</refsect1>
</refentry>