postgresql/doc/src/sgml/ref/drop_language.sgml

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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_language.sgml,v 1.8 2000/11/04 21:04:54 momjian Exp $
Postgres documentation
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<refentry id="SQL-DROPLANGUAGE">
<refmeta>
<refentrytitle id="SQL-DROPLANGUAGE-TITLE">
DROP LANGUAGE
</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>
DROP LANGUAGE
</refname>
<refpurpose>
Removes a user-defined procedural language
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refsynopsisdivinfo>
<date>1999-07-20</date>
</refsynopsisdivinfo>
<synopsis>
DROP [ PROCEDURAL ] LANGUAGE '<replaceable class="PARAMETER">name</replaceable>'
</synopsis>
<refsect2 id="R2-SQL-DROPLANGUAGE-1">
<refsect2info>
<date>1998-04-15</date>
</refsect2info>
<title>
Inputs
</title>
<para>
<variablelist>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of an existing procedural language.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
<refsect2 id="R2-SQL-DROPLANGUAGE-2">
<refsect2info>
<date>1998-04-15</date>
</refsect2info>
<title>
Outputs
</title>
<para>
<variablelist>
<varlistentry>
<term><computeroutput>
DROP
</computeroutput></term>
<listitem>
<para>
This message is returned if the language is successfully dropped.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>
ERROR: Language "<replaceable class="parameter">name</replaceable>" doesn't exist
</computeroutput></term>
<listitem>
<para>
This message occurs if a language called
<replaceable class="parameter">name</replaceable> is
not found in the database.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
</refsynopsisdiv>
<refsect1 id="R1-SQL-DROPLANGUAGE-1">
<refsect1info>
<date>1998-04-15</date>
</refsect1info>
<title>
Description
</title>
<para>
<command>DROP PROCEDURAL LANGUAGE</command> will remove the definition
of the previously registered procedural language called
<replaceable class="parameter">name</replaceable>.
</para>
<refsect2 id="R2-SQL-DROPLANGUAGE-3">
<refsect2info>
<date>1998-04-15</date>
</refsect2info>
<title>
Notes
</title>
<para>
The <command>DROP PROCEDURAL LANGUAGE</command> statement is
a <productname>Postgres</productname> language extension.
</para>
<para>
Refer to
<xref linkend="sql-createlanguage-title" endterm="sql-createlanguage-title">
for information on how to create procedural languages.
</para>
<para>
No checks are made if functions or trigger procedures registered
in this language still exist. To re-enable them without having
to drop and recreate all the functions, the pg_proc's prolang
attribute of the functions must be adjusted to the new object
ID of the recreated pg_language entry for the PL.
</para>
</refsect2>
</refsect1>
<refsect1 id="R1-SQL-DROPLANGUAGE-2">
<title>
Usage
</title>
<para>
This command removes the PL/Sample language:
<programlisting>
DROP PROCEDURAL LANGUAGE 'plsample';
</programlisting>
</para>
</refsect1>
<refsect1 id="R1-SQL-DROPLANGUAGE-3">
<title>
Compatibility
</title>
<refsect2 id="R2-SQL-DROPLANGUAGE-5">
<refsect2info>
<date>1998-04-15</date>
</refsect2info>
<title>
SQL92
</title>
<para>
There is no <command>DROP PROCEDURAL LANGUAGE</command> in
<acronym>SQL92</acronym>.
</para>
</refsect2>
</refsect1>
</refentry>
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