Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
ALTER AGGREGATE(7)	 PostgreSQL 17.5 Documentation	    ALTER AGGREGATE(7)

NAME
       ALTER_AGGREGATE - change	the definition of an aggregate function

SYNOPSIS
       ALTER AGGREGATE name ( aggregate_signature ) RENAME TO new_name
       ALTER AGGREGATE name ( aggregate_signature )
		       OWNER TO	{ new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
       ALTER AGGREGATE name ( aggregate_signature ) SET	SCHEMA new_schema

       where aggregate_signature is:

       * |
       [ argmode ] [ argname ] argtype [ , ... ] |
       [ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [	argmode	] [ argname ] argtype [	, ... ]

DESCRIPTION
       ALTER AGGREGATE changes the definition of an aggregate function.

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

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

       argmode
	   The mode of an argument: IN or VARIADIC. If omitted,	the default is
	   IN.

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

       argtype
	   An input data type on which the aggregate function operates.	To
	   reference a zero-argument aggregate function, write * in place of
	   the list of argument	specifications.	To reference an	ordered-set
	   aggregate function, write ORDER BY between the direct and
	   aggregated argument specifications.

       new_name
	   The new name	of the aggregate function.

       new_owner
	   The new owner of the	aggregate function.

       new_schema
	   The new schema for the aggregate function.

NOTES
       The recommended syntax for referencing an ordered-set aggregate is to
       write ORDER BY between the direct and aggregated	argument
       specifications, in the same style as in CREATE AGGREGATE. However, it
       will also work to omit ORDER BY and just	run the	direct and aggregated
       argument	specifications into a single list. In this abbreviated form,
       if VARIADIC "any" was used in both the direct and aggregated argument
       lists, write VARIADIC "any" only	once.

EXAMPLES
       To rename the aggregate function	myavg for type integer to my_average:

	   ALTER AGGREGATE myavg(integer) RENAME TO my_average;

       To change the owner of the aggregate function myavg for type integer to
       joe:

	   ALTER AGGREGATE myavg(integer) OWNER	TO joe;

       To move the ordered-set aggregate mypercentile with direct argument of
       type float8 and aggregated argument of type integer into	schema
       myschema:

	   ALTER AGGREGATE mypercentile(float8 ORDER BY	integer) SET SCHEMA myschema;

       This will work too:

	   ALTER AGGREGATE mypercentile(float8,	integer) SET SCHEMA myschema;

COMPATIBILITY
       There is	no ALTER AGGREGATE statement in	the SQL	standard.

SEE ALSO
       CREATE AGGREGATE	(CREATE_AGGREGATE(7)), DROP AGGREGATE
       (DROP_AGGREGATE(7))

PostgreSQL 17.5			     2025		    ALTER AGGREGATE(7)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=ALTER_AGGREGATE&sektion=7&manpath=FreeBSD+Ports+14.3.quarterly>

home | help