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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.
126 lines
2.9 KiB
Plaintext
126 lines
2.9 KiB
Plaintext
<!--
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doc/src/sgml/ref/drop_language.sgml
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PostgreSQL documentation
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-->
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<refentry id="SQL-DROPLANGUAGE">
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<indexterm zone="sql-droplanguage">
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<primary>DROP LANGUAGE</primary>
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</indexterm>
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<refmeta>
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<refentrytitle>DROP LANGUAGE</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 LANGUAGE</refname>
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<refpurpose>remove a procedural language</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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DROP [ PROCEDURAL ] LANGUAGE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [ CASCADE | RESTRICT ]
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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>DROP LANGUAGE</command> removes the definition of a
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previously registered procedural language. You must be a superuser
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or the owner of the language to use <command>DROP LANGUAGE</>.
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</para>
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<note>
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<para>
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As of <productname>PostgreSQL</productname> 9.1, most procedural
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languages have been made into <quote>extensions</>, and should
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therefore be removed with <xref linkend="sql-dropextension">
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not <command>DROP LANGUAGE</command>.
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</para>
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</note>
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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 language does not exist. A notice is issued
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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 class="PARAMETER">name</replaceable></term>
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<listitem>
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<para>
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The name of an existing procedural language. For backward
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compatibility, the name can be enclosed by single quotes.
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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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<listitem>
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<para>
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Automatically drop objects that depend on the language (such as
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functions in the language).
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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>RESTRICT</literal></term>
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<listitem>
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<para>
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Refuse to drop the language if any objects depend on it. This
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is the default.
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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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This command removes the procedural language
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<literal>plsample</literal>:
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<programlisting>
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DROP LANGUAGE plsample;
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</programlisting></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>DROP LANGUAGE</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-alterlanguage"></member>
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<member><xref linkend="sql-createlanguage"></member>
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<member><xref linkend="app-droplang"></member>
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</simplelist>
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</refsect1>
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</refentry>
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