alter_aggregate(7)

NAME#

ALTER_AGGREGATE - change the definition of an aggregate function

SYNOPSIS#

ALTER AGGREGATE \nname\n ( \naggregate_signature\n ) RENAME TO \nnew_name\n
ALTER AGGREGATE \nname\n ( \naggregate_signature\n )
\n
                OWNER TO { \nnew_owner\n | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER AGGREGATE \nname\n ( \naggregate_signature\n ) SET SCHEMA \nnew_schema\n
where \naggregate_signature\n is:
* |
[ \nargmode\n ] [ \nargname\n ] \nargtype\n [ , ... ] |
[ [ \nargmode\n ] [ \nargname\n ] \nargtype\n [ , ... ] ] ORDER BY [ \nargmode\n ] [ \nargname\n ] \nargtype\n [ , ... ]

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

argmode

argname

argtype

new_name

new_owner

new_schema

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))