<!--
doc/src/sgml/ref/alter_procedure.sgml
PostgreSQL documentation
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<refentry id="sql-alterprocedure">
 <indexterm zone="sql-alterprocedure">
  <primary>ALTER PROCEDURE</primary>
 </indexterm>

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

 <refnamediv>
  <refname>ALTER PROCEDURE</refname>
  <refpurpose>change the definition of a procedure</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
<synopsis>
ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ]
    <replaceable class="parameter">action</replaceable> [ ... ] [ RESTRICT ]
ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ]
    RENAME TO <replaceable>new_name</replaceable>
ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ]
    OWNER TO { <replaceable>new_owner</replaceable> | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ]
    SET SCHEMA <replaceable>new_schema</replaceable>
ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ]
    [ NO ] DEPENDS ON EXTENSION <replaceable>extension_name</replaceable>

<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>

    [ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER
    SET <replaceable class="parameter">configuration_parameter</replaceable> { TO | = } { <replaceable class="parameter">value</replaceable> | DEFAULT }
    SET <replaceable class="parameter">configuration_parameter</replaceable> FROM CURRENT
    RESET <replaceable class="parameter">configuration_parameter</replaceable>
    RESET ALL
</synopsis>
 </refsynopsisdiv>

 <refsect1>
  <title>Description</title>

  <para>
   <command>ALTER PROCEDURE</command> changes the definition of a
   procedure.
  </para>

  <para>
   You must own the procedure to use <command>ALTER PROCEDURE</command>.
   To change a procedure's schema, you must also have <literal>CREATE</literal>
   privilege on the new schema.
   To alter the owner, you must be able to <literal>SET ROLE</literal> to the
   new owning role, and that role must have <literal>CREATE</literal>
   privilege on the procedure's schema.
   (These restrictions enforce that altering the owner
   doesn't do anything you couldn't do by dropping and recreating the procedure.
   However, a superuser can alter ownership of any procedure anyway.)
  </para>
 </refsect1>

 <refsect1>
  <title>Parameters</title>

  <variablelist>
   <varlistentry>
    <term><replaceable class="parameter">name</replaceable></term>
    <listitem>
     <para>
      The name (optionally schema-qualified) of an existing procedure.  If no
      argument list is specified, the name must be unique in its schema.
     </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>.