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diff --git a/doc/src/sgml/ref/drop_trigger.sgml b/doc/src/sgml/ref/drop_trigger.sgml new file mode 100644 index 0000000..728541e --- /dev/null +++ b/doc/src/sgml/ref/drop_trigger.sgml @@ -0,0 +1,127 @@ +<!-- +doc/src/sgml/ref/drop_trigger.sgml +PostgreSQL documentation +--> + +<refentry id="sql-droptrigger"> + <indexterm zone="sql-droptrigger"> + <primary>DROP TRIGGER</primary> + </indexterm> + + <refmeta> + <refentrytitle>DROP TRIGGER</refentrytitle> + <manvolnum>7</manvolnum> + <refmiscinfo>SQL - Language Statements</refmiscinfo> + </refmeta> + + <refnamediv> + <refname>DROP TRIGGER</refname> + <refpurpose>remove a trigger</refpurpose> + </refnamediv> + + <refsynopsisdiv> +<synopsis> +DROP TRIGGER [ IF EXISTS ] <replaceable class="parameter">name</replaceable> ON <replaceable class="parameter">table_name</replaceable> [ CASCADE | RESTRICT ] +</synopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para> + <command>DROP TRIGGER</command> removes an existing + trigger definition. To execute this command, the current + user must be the owner of the table for which the trigger is defined. + </para> + </refsect1> + + <refsect1> + <title>Parameters</title> + + <variablelist> + + <varlistentry> + <term><literal>IF EXISTS</literal></term> + <listitem> + <para> + Do not throw an error if the trigger does not exist. A notice is issued + in this case. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">name</replaceable></term> + <listitem> + <para> + The name of the trigger to remove. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">table_name</replaceable></term> + <listitem> + <para> + The name (optionally schema-qualified) of the table for which + the trigger is defined. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><literal>CASCADE</literal></term> + <listitem> + <para> + Automatically drop objects that depend on the trigger, + and in turn all objects that depend on those objects + (see <xref linkend="ddl-depend"/>). + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><literal>RESTRICT</literal></term> + <listitem> + <para> + Refuse to drop the trigger if any objects depend on it. This is + the default. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="sql-droptrigger-examples"> + <title>Examples</title> + + <para> + Destroy the trigger <literal>if_dist_exists</literal> on the table + <literal>films</literal>: + +<programlisting> +DROP TRIGGER if_dist_exists ON films; +</programlisting></para> + </refsect1> + + <refsect1 id="sql-droptrigger-compatibility"> + <title>Compatibility</title> + + <para> + The <command>DROP TRIGGER</command> statement in + <productname>PostgreSQL</productname> is incompatible with the SQL + standard. In the SQL standard, trigger names are not local to + tables, so the command is simply <literal>DROP TRIGGER + <replaceable>name</replaceable></literal>. + </para> + </refsect1> + + <refsect1> + <title>See Also</title> + + <simplelist type="inline"> + <member><xref linkend="sql-createtrigger"/></member> + </simplelist> + </refsect1> + +</refentry> |