<!--
doc/src/sgml/ref/drop_procedure.sgml
PostgreSQL documentation
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<refentry id="sql-dropprocedure">
 <indexterm zone="sql-dropprocedure">
  <primary>DROP PROCEDURE</primary>
 </indexterm>

 <refmeta>
  <refentrytitle>DROP PROCEDURE</refentrytitle>
  <manvolnum>7</manvolnum>
  <refmiscinfo>SQL - Language Statements</refmiscinfo>
 </refmeta>

 <refnamediv>
  <refname>DROP PROCEDURE</refname>
  <refpurpose>remove a procedure</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
<synopsis>
DROP PROCEDURE [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] [, ...]
    [ CASCADE | RESTRICT ]
</synopsis>
 </refsynopsisdiv>

 <refsect1>
  <title>Description</title>

  <para>
   <command>DROP PROCEDURE</command> removes the definition of one or more
   existing procedures. To execute this command the user must be the
   owner of the procedure(s). The argument types to the
   procedure(s) usually must be specified, since several different procedures
   can exist with the same name and different argument lists.
  </para>
 </refsect1>

 <refsect1>
  <title>Parameters</title>

  <variablelist>
    <varlistentry>
    <term><literal>IF EXISTS</literal></term>
    <listitem>
     <para>
      Do not throw an error if the procedure 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 procedure.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><replaceable class="parameter">argmode</replaceable></term>

    <listitem>
     <para>
      The mode of an argument: <literal>IN</literal>, <literal>OUT</literal>,
      <literal>INOUT</literal>, or <literal>VARIADIC</literal>.  If omitted,
      the default is <literal>IN</literal> (but see below).
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><replaceable class="parameter">argname</replaceable></term>

    <listitem>
     <para>
      The name of an argument.
      Note that <command>DROP PROCEDURE</command> does not actually pay
      any attention to argument names, since only the argument data
      types are used to determine the procedure's identity.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><replaceable class="parameter">argtype</replaceable></term>

    <listitem>
     <para>
      The data type(s) of the procedure's arguments (optionally
      schema-qualified), if any.
      See below for details.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><literal>CASCADE</literal></term>
    <listitem>
     <para>
      Automatically drop objects that depend on the procedure,
      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 procedure if any objects depend on it.  This
      is the default.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 id="sql-dropprocedure-notes">
  <title>Notes</title>

  <para>
   If there is only one procedure of the given name, the argument list
   can be omitted.  Omit the parentheses too in this case.
  </para>

  <para>
   In <productname>PostgreSQL</productname>, it's sufficient to list the
   input (including