granicus.if.org Git - postgresql/blob - doc/src/sgml/ref/drop_view.sgml

   1 <!--
   2 doc/src/sgml/ref/drop_view.sgml
   3 PostgreSQL documentation
   4 -->
   5
   6 <refentry id="SQL-DROPVIEW">
   7  <refmeta>
   8   <refentrytitle>DROP VIEW</refentrytitle>
   9   <manvolnum>7</manvolnum>
  10   <refmiscinfo>SQL - Language Statements</refmiscinfo>
  11  </refmeta>
  12
  13  <refnamediv>
  14   <refname>DROP VIEW</refname>
  15   <refpurpose>remove a view</refpurpose>
  16  </refnamediv>
  17
  18  <indexterm zone="sql-dropview">
  19   <primary>DROP VIEW</primary>
  20  </indexterm>
  21
  22  <refsynopsisdiv>
  23 <synopsis>
  24 DROP VIEW [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
  25 </synopsis>
  26  </refsynopsisdiv>
  27
  28  <refsect1>
  29   <title>Description</title>
  30
  31   <para>
  32    <command>DROP VIEW</command> drops an existing view.  To execute
  33    this command you must be the owner of the view.
  34   </para>
  35  </refsect1>
  36
  37  <refsect1>
  38   <title>Parameters</title>
  39
  40   <variablelist>
  41    <varlistentry>
  42     <term><literal>IF EXISTS</literal></term>
  43     <listitem>
  44      <para>
  45       Do not throw an error if the view does not exist. A notice is issued
  46       in this case.
  47      </para>
  48     </listitem>
  49    </varlistentry>
  50
  51    <varlistentry>
  52     <term><replaceable class="PARAMETER">name</replaceable></term>
  53     <listitem>
  54      <para>
  55       The name (optionally schema-qualified) of the view to remove.
  56      </para>
  57     </listitem>
  58    </varlistentry>
  59
  60    <varlistentry>
  61     <term><literal>CASCADE</literal></term>
  62     <listitem>
  63      <para>
  64       Automatically drop objects that depend on the view (such as
  65       other views).
  66      </para>
  67     </listitem>
  68    </varlistentry>
  69
  70    <varlistentry>
  71     <term><literal>RESTRICT</literal></term>
  72     <listitem>
  73      <para>
  74       Refuse to drop the view if any objects depend on it.  This is
  75       the default.
  76      </para>
  77     </listitem>
  78    </varlistentry>
  79   </variablelist>
  80  </refsect1>
  81
  82  <refsect1>
  83   <title>Examples</title>
  84
  85   <para>
  86    This command will remove the view called <literal>kinds</literal>:
  87 <programlisting>
  88 DROP VIEW kinds;
  89 </programlisting></para>
  90  </refsect1>
  91
  92  <refsect1>
  93   <title>Compatibility</title>
  94
  95   <para>
  96    This command conforms to the SQL standard, except that the standard only
  97    allows one view to be dropped per command, and apart from the
  98    <literal>IF EXISTS</> option, which is a <productname>PostgreSQL</>
  99    extension.
 100   </para>
 101  </refsect1>
 102
 103  <refsect1>
 104   <title>See Also</title>
 105
 106   <simplelist type="inline">
 107    <member><xref linkend="sql-alterview"></member>
 108    <member><xref linkend="sql-createview"></member>
 109   </simplelist>
 110  </refsect1>
 111
 112 </refentry>