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DROP ROUTINE(7)		 PostgreSQL 17.5 Documentation	       DROP ROUTINE(7)

NAME
       DROP_ROUTINE - remove a routine

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

DESCRIPTION
       DROP ROUTINE removes the	definition of one or more existing routines.
       The term	"routine" includes aggregate functions,	normal functions, and
       procedures. See under DROP AGGREGATE (DROP_AGGREGATE(7)), DROP FUNCTION
       (DROP_FUNCTION(7)), and DROP PROCEDURE (DROP_PROCEDURE(7)) for the
       description of the parameters, more examples, and further details.

NOTES
       The lookup rules	used by	DROP ROUTINE are fundamentally the same	as for
       DROP PROCEDURE; in particular, DROP ROUTINE shares that command's
       behavior	of considering an argument list	that has no argmode markers to
       be possibly using the SQL standard's definition that OUT	arguments are
       included	in the list. (DROP AGGREGATE and DROP FUNCTION do not do
       that.)

       In some cases where the same name is shared by routines of different
       kinds, it is possible for DROP ROUTINE to fail with an ambiguity	error
       when a more specific command (DROP FUNCTION, etc.) would	work.
       Specifying the argument type list more carefully	will also resolve such
       problems.

       These lookup rules are also used	by other commands that act on existing
       routines, such as ALTER ROUTINE and COMMENT ON ROUTINE.

EXAMPLES
       To drop the routine foo for type	integer:

	   DROP	ROUTINE	foo(integer);

       This command will work independent of whether foo is an aggregate,
       function, or procedure.

COMPATIBILITY
       This command conforms to	the SQL	standard, with these PostgreSQL
       extensions:

       •   The standard	only allows one	routine	to be dropped per command.

       •   The IF EXISTS option	is an extension.

       •   The ability to specify argument modes and names is an extension,
	   and the lookup rules	differ when modes are given.

       •   User-definable aggregate functions are an extension.

SEE ALSO
       DROP AGGREGATE (DROP_AGGREGATE(7)), DROP	FUNCTION (DROP_FUNCTION(7)),
       DROP PROCEDURE (DROP_PROCEDURE(7)), ALTER ROUTINE (ALTER_ROUTINE(7))

       Note that there is no CREATE ROUTINE command.

PostgreSQL 17.5			     2025		       DROP ROUTINE(7)

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