<REFENTRY ID="SQL-DROPTRIGGER">
 <REFMETA>
  <REFENTRYTITLE>
   DROP TRIGGER
  </REFENTRYTITLE>
  <REFMISCINFO>SQL - Language Statements</REFMISCINFO>
 </REFMETA>
 <REFNAMEDIV>
  <REFNAME>
   DROP TRIGGER
  </REFNAME>
  <REFPURPOSE>
   Removes the definition of a trigger
  </REFPURPOSE>             
 <REFSYNOPSISDIV>
  <REFSYNOPSISDIVINFO>
   <DATE>1998-04-15</DATE>
  </REFSYNOPSISDIVINFO>
  <SYNOPSIS>
   DROP TRIGGER <REPLACEABLE CLASS="PARAMETER">name</REPLACEABLE> ON <REPLACEABLE CLASS="PARAMETER">table</REPLACEABLE>
  </SYNOPSIS>
  
  <REFSECT2 ID="R2-SQL-DROPTRIGGER-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">name</REPLACEABLE></ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
   The name of an existing trigger.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
	<VARLISTENTRY>
	 <TERM>
	  <ReturnValue><REPLACEABLE CLASS="PARAMETER">table</REPLACEABLE></ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
          The name of a table.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
       </variablelist>
     </LISTITEM>
    </VARLISTENTRY>
   </VARIABLELIST>
  </REFSECT2>
  
  <REFSECT2 ID="R2-SQL-DROPTRIGGER-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 trigger is successfully dropped.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
	<VARLISTENTRY>
	 <TERM>
	  <ReturnValue>ERROR: DropTrigger: there is no trigger <REPLACEABLE CLASS="PARAMETER">name</REPLACEABLE> on relation "<replaceable class="parameter">table</replaceable>"</ReturnValue>
	 </TERM>
	 <LISTITEM>
	  <PARA>
          This message occurs if the trigger specified does not exist.
	  </PARA>
	 </LISTITEM>
	</VARLISTENTRY>
       </variablelist>
     </LISTITEM>
    </VARLISTENTRY>
   </VARIABLELIST>
   
  </REFSECT2>
 </REFSYNOPSISDIV>
 
 <REFSECT1 ID="R1-SQL-DROPTRIGGER-1">
  <REFSECT1INFO>
   <DATE>1998-04-15</DATE>
  </REFSECT1INFO>
  <TITLE>
   Description
  </TITLE>
  <PARA>
   <command>DROP TRIGGER</command> will remove all references to an existing
   trigger definition. To execute this command the current
   user must be the owner of the trigger.
  </PARA>
  
  <REFSECT2 ID="R2-SQL-DROPTRIGGER-3">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    Notes
   </TITLE>
   <PARA>
    The <command>DROP TRIGGER</command> statement is a PostgreSQL
    language extension.
   </PARA>
   <PARA>
    Refer to the <command>CREATE TRIGGER</command> statement for
    information on how to create triggers.
   </PARA>
  </REFSECT2>
  
 <REFSECT1 ID="R1-SQL-DROPTRIGGER-2">
  <TITLE>
   Usage
  </TITLE>
  <PARA>
   Destroy the <literal>if_dist_exists</literal> trigger on table <literal>films</literal>:
  </PARA>
  <ProgramListing>
   DROP TRIGGER if_dist_exists ON films;
  </ProgramListing>
 </REFSECT1>
 
 <REFSECT1 ID="R1-SQL-DROPTRIGGER-3">
  <TITLE>
   Compatibility
  </TITLE>
  <PARA>
  </PARA>
  
  <REFSECT2 ID="R2-SQL-DROPTRIGGER-4">
   <REFSECT2INFO>
    <DATE>1998-04-15</DATE>
   </REFSECT2INFO>
   <TITLE>
    SQL92
   </TITLE>
   <PARA>
    There is no <command>DROP TRIGGER</command> statement in SQL92.
   </PARA>
  </refsect2>
 </refsect1>
</REFENTRY>

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