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DROP FUNCTION(7)	PostgreSQL 9.6.3 Documentation	      DROP FUNCTION(7)

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), and in turn all objects that	depend on
	   those objects (see Section 5.13, "Dependency	Tracking", in the
	   documentation).

       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))

PostgreSQL 9.6.3		     2017		      DROP FUNCTION(7)

NAME | SYNOPSIS | DESCRIPTION | PARAMETERS | EXAMPLES | COMPATIBILITY | SEE ALSO

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