132 lines
3.0 KiB
Plaintext
132 lines
3.0 KiB
Plaintext
<!--
|
|
doc/src/sgml/ref/drop_schema.sgml
|
|
PostgreSQL documentation
|
|
-->
|
|
|
|
<refentry id="sql-dropschema">
|
|
<indexterm zone="sql-dropschema">
|
|
<primary>DROP SCHEMA</primary>
|
|
</indexterm>
|
|
|
|
<refmeta>
|
|
<refentrytitle>DROP SCHEMA</refentrytitle>
|
|
<manvolnum>7</manvolnum>
|
|
<refmiscinfo>SQL - Language Statements</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>DROP SCHEMA</refname>
|
|
<refpurpose>remove a schema</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<synopsis>
|
|
DROP SCHEMA [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>
|
|
<command>DROP SCHEMA</command> removes schemas from the database.
|
|
</para>
|
|
|
|
<para>
|
|
A schema can only be dropped by its owner or a superuser. Note that
|
|
the owner can drop the schema (and thereby all contained objects)
|
|
even if they do not own some of the objects within the schema.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Parameters</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><literal>IF EXISTS</literal></term>
|
|
<listitem>
|
|
<para>
|
|
Do not throw an error if the schema 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 a schema.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><literal>CASCADE</literal></term>
|
|
<listitem>
|
|
<para>
|
|
Automatically drop objects (tables, functions, etc.) that are
|
|
contained in the schema,
|
|
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 schema if it contains any objects. This is
|
|
the default.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Notes</title>
|
|
|
|
<para>
|
|
Using the <literal>CASCADE</literal> option might make the command
|
|
remove objects in other schemas besides the one(s) named.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<para>
|
|
To remove schema <literal>mystuff</literal> from the database,
|
|
along with everything it contains:
|
|
|
|
<programlisting>
|
|
DROP SCHEMA mystuff CASCADE;
|
|
</programlisting></para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Compatibility</title>
|
|
|
|
<para>
|
|
<command>DROP SCHEMA</command> is fully conforming with the SQL
|
|
standard, except that the standard only allows one schema to be
|
|
dropped per command, and apart from the
|
|
<literal>IF EXISTS</literal> option, which is a <productname>PostgreSQL</productname>
|
|
extension.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
|
|
<simplelist type="inline">
|
|
<member><xref linkend="sql-alterschema"/></member>
|
|
<member><xref linkend="sql-createschema"/></member>
|
|
</simplelist>
|
|
</refsect1>
|
|
|
|
</refentry>
|