Provided by: postgresql-client-8.4_8.4.3-1_i386 bug

NAME

       DROP FUNCTION - remove a function

SYNOPSIS

       DROP FUNCTION [ IF EXISTS ] name ( [ [ argmode ] [ argname ] argtype [, ...] ] )
           [ CASCADE | RESTRICT ]

DESCRIPTION

       DROP  FUNCTION  removes  the  definition  of  an  existing function. To
       execute this command the user must be the owner of  the  function.  The
       argument  types  to  the  function  must  be  specified,  since several
       different functions can exist with the same name and different argument
       lists.

PARAMETERS

       IF EXISTS
              Do  not  throw an error if the function does not exist. A notice
              is issued in this case.

       name   The name (optionally schema-qualified) of an existing  function.

       argmode
              The  mode  of  an  argument:  IN,  OUT,  INOUT, or VARIADIC.  If
              omitted, the default is IN.  Note that DROP  FUNCTION  does  not
              actually  pay  any  attention  to  OUT arguments, since only the
              input arguments are needed to determine the function’s identity.
              So  it  is  sufficient  to  list  the  IN,  INOUT,  and VARIADIC
              arguments.

       argname
              The name of an argument.   Note  that  DROP  FUNCTION  does  not
              actually  pay  any  attention  to argument names, since only the
              argument data types  are  needed  to  determine  the  function’s
              identity.

       argtype
              The data type(s) of the function’s arguments (optionally schema-
              qualified), if any.

       CASCADE
              Automatically drop objects that depend on the function (such  as
              operators or triggers).

       RESTRICT
              Refuse to drop the function if any objects depend on it. This is
              the default.

EXAMPLES

       This command removes the square root function:

       DROP FUNCTION sqrt(integer);

COMPATIBILITY

       A DROP FUNCTION statement is defined in the SQL standard, but it is not
       compatible with this command.

SEE ALSO

       CREATE      FUNCTION      [create_function(7)],      ALTER     FUNCTION
       [alter_function(7)]