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+<!--
+doc/src/sgml/ref/drop_domain.sgml
+PostgreSQL documentation
+-->
+
+<refentry id="sql-dropdomain">
+ <indexterm zone="sql-dropdomain">
+ <primary>DROP DOMAIN</primary>
+ </indexterm>
+
+ <refmeta>
+ <refentrytitle>DROP DOMAIN</refentrytitle>
+ <manvolnum>7</manvolnum>
+ <refmiscinfo>SQL - Language Statements</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+ <refname>DROP DOMAIN</refname>
+ <refpurpose>remove a domain</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+<synopsis>
+DROP DOMAIN [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
+</synopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>
+ <command>DROP DOMAIN</command> removes a domain. Only the owner of
+ a domain can remove it.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Parameters</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><literal>IF EXISTS</literal></term>
+ <listitem>
+ <para>
+ Do not throw an error if the domain 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 (optionally schema-qualified) of an existing domain.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><literal>CASCADE</literal></term>
+ <listitem>
+ <para>
+ Automatically drop objects that depend on the domain (such as
+ table columns),
+ 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 domain if any objects depend on it. This is
+ the default.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id="sql-dropdomain-examples">
+ <title>Examples</title>
+
+ <para>
+ To remove the domain <type>box</type>:
+
+<programlisting>
+DROP DOMAIN box;
+</programlisting></para>
+ </refsect1>
+
+ <refsect1 id="sql-dropdomain-compatibility">
+ <title>Compatibility</title>
+
+ <para>
+ This command conforms to the SQL standard, except for the
+ <literal>IF EXISTS</literal> option, which is a <productname>PostgreSQL</productname>
+ extension.
+ </para>
+ </refsect1>
+
+ <refsect1 id="sql-dropdomain-see-also">
+ <title>See Also</title>
+
+ <simplelist type="inline">
+ <member><xref linkend="sql-createdomain"/></member>
+ <member><xref linkend="sql-alterdomain"/></member>
+ </simplelist>
+ </refsect1>
+
+</refentry>