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bb4eefe7bf
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.
105 lines
2.5 KiB
Plaintext
105 lines
2.5 KiB
Plaintext
<!-- doc/src/sgml/ref/drop_conversion.sgml -->
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<refentry id="SQL-DROPCONVERSION">
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<indexterm zone="sql-dropconversion">
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<primary>DROP CONVERSION</primary>
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</indexterm>
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<refmeta>
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<refentrytitle>DROP CONVERSION</refentrytitle>
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<manvolnum>7</manvolnum>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>DROP CONVERSION</refname>
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<refpurpose>remove a conversion</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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DROP CONVERSION [ IF EXISTS ] <replaceable>name</replaceable> [ CASCADE | RESTRICT ]
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</synopsis>
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</refsynopsisdiv>
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<refsect1 id="sql-dropconversion-description">
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<title>Description</title>
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<para>
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<command>DROP CONVERSION</command> removes a previously defined conversion.
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To be able to drop a conversion, you must own the conversion.
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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><literal>IF EXISTS</literal></term>
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<listitem>
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<para>
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Do not throw an error if the conversion does not exist.
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A notice is issued in this case.
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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>name</replaceable></term>
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<listitem>
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<para>
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The name of the conversion. The conversion name can be
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schema-qualified.
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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><literal>CASCADE</literal></term>
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<term><literal>RESTRICT</literal></term>
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<listitem>
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<para>
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These key words do not have any effect, since there are no
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dependencies on conversions.
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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 id="sql-dropconversion-examples">
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<title>Examples</title>
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<para>
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To drop the conversion named <literal>myname</>:
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<programlisting>
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DROP CONVERSION myname;
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</programlisting></para>
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</refsect1>
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<refsect1 id="sql-dropconversion-compat">
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<title>Compatibility</title>
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<para>
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There is no <command>DROP CONVERSION</command> statement in the SQL
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standard, but a <command>DROP TRANSLATION</command> statement that
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goes along with the <command>CREATE TRANSLATION</command> statement
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that is similar to the <command>CREATE CONVERSION</command>
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statement in PostgreSQL.
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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-alterconversion"></member>
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<member><xref linkend="sql-createconversion"></member>
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</simplelist>
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</refsect1>
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</refentry>
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