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3c49c6facb
Since some preparation work had already been done, the only source changes left were changing empty-element tags like <xref linkend="foo"> to <xref linkend="foo"/>, and changing the DOCTYPE. The source files are still named *.sgml, but they are actually XML files now. Renaming could be considered later. In the build system, the intermediate step to convert from SGML to XML is removed. Everything is build straight from the source files again. The OpenSP (or the old SP) package is no longer needed. The documentation toolchain instructions are updated and are much simpler now. Peter Eisentraut, Alexander Lakhin, Jürgen Purtz
127 lines
2.9 KiB
Plaintext
127 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</command>.
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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</quote>, 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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and in turn all objects that depend on those objects
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(see <xref linkend="ddl-depend"/>).
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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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</simplelist>
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</refsect1>
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</refentry>
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