<REFENTRY ID="SQL-DROPVIEW">
 <REFMETA>
  <REFENTRYTITLE>
   DROP VIEW
  </REFENTRYTITLE>
  <REFMISCINFO>SQL - Language Statements</REFMISCINFO>
 </REFMETA>
 <REFNAMEDIV>
  <REFNAME>
   DROP VIEW
  </REFNAME>
  <REFPURPOSE>
   Removes an existing view from a database
  </REFPURPOSE>
 <REFSYNOPSISDIV>
  <REFSYNOPSISDIVINFO>
   <DATE>1998-04-15</DATE>
  </REFSYNOPSISDIVINFO>
  <SYNOPSIS>
   DROP VIEW <REPLACEABLE CLASS="PARAMETER">view</REPLACEABLE>
  </SYNOPSIS>
  
  <REFSECT2 ID="R2-SQL-DROPVIEW-1">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    Inputs
   </TITLE>
   <PARA>
   </PARA>
   <VARIABLELIST>
    <VARLISTENTRY>
     <TERM>
     </TERM>
     <LISTITEM>
      <PARA>
       <VARIABLELIST>
	<VARLISTENTRY>
	 <TERM>
	  <ReturnValue><REPLACEABLE CLASS="PARAMETER">view</REPLACEABLE></ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
	   The name of an existing view to drop.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
       </variablelist>
     </LISTITEM>
    </VARLISTENTRY>
   </VARIABLELIST>
  </REFSECT2>
  
  <REFSECT2 ID="R2-SQL-DROPVIEW-2">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    Outputs
   </TITLE>
   <PARA>
   </PARA>
   <VARIABLELIST>
    <VARLISTENTRY>
     <TERM>
     </TERM>
     <LISTITEM>
      <PARA>
       <VARIABLELIST>
	<VARLISTENTRY>
	 <TERM>
	  <ReturnValue>DROP</ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
	   The message returned if the command is successful.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
	<VARLISTENTRY>
	 <TERM>
	  <ReturnValue>
	   ERROR: RewriteGetRuleEventRel: rule "_RET<REPLACEABLE CLASS="PARAMETER">view</REPLACEABLE>" not found</ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
	   This message occurs if the specified view does not exist in
	   the database.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
       </variablelist>
     </LISTITEM>
    </VARLISTENTRY>
   </variablelist>
  </REFSECT2>
 </REFSYNOPSISDIV>
 
 <REFSECT1 ID="R1-SQL-DROPVIEW-1">
  <REFSECT1INFO>
   <DATE>1998-04-15</DATE>
  </REFSECT1INFO>
  <TITLE>
   Description
  </TITLE>
  <PARA>
   <command>DROP VIEW</command> drops an existing view from the database.
   To execute this command you must be the owner of the
   view.
  </PARA>

  <REFSECT2 ID="R2-SQL-DROPVIEW-3">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    Notes
   </TITLE>
   <PARA>
    The PostgreSQL <command>DROP TABLE</command> statement also drops views.
   </PARA>
<PARA>
    Refer to the<command> CREATE VIEW</command> statement for information on how to create views.
   </PARA>
  </REFSECT2>
  
 <REFSECT1 ID="R1-SQL-DROPVIEW-2">
  <TITLE>
   Usage
  </TITLE>
  <PARA>
   This command will remove the view called <literal>kinds</literal>:
  </PARA>
  <ProgramListing>
   DROP VIEW kinds
  </ProgramListing>
 </REFSECT1>
 
 <REFSECT1 ID="R1-SQL-DROPVIEW-3">
  <TITLE>
   Compatibility
  </TITLE>
  <PARA>
  </PARA>
  
  <REFSECT2 ID="R2-SQL-DROPVIEW-4">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    SQL92
   </TITLE>
   <PARA>
    SQL92 specifies some additional capabilities for
    <command>DROP VIEW</command>:
   </PARA>
   
   <synopsis>
    DROP VIEW <replaceable class="parameter">view</replaceable> {RESTRICT | CASCADE}
   </synopsis>
   <variablelist>
    <varlistentry>
     <term>RESTRICT</term>
     <listitem>
      <para>
       Ensures that only a view with no dependent views or
       integrity constraints can be destroyed.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term>CASCADE</term>
     <listitem>
      <para>
       Any referencing views and integrity constraints
       will be dropped as well.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
   <tip>
    <para>
     At present, to remove a referenced view from a PostgreSQL database, 
     you must drop it by hand.
    </para>
   </tip>
  </refsect2>
 </refsect1>
</REFENTRY>

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