Changes the definition of an aggregate function
ALTER AGGREGATE <name> ( <aggregate_signature> ) RENAME TO <new_name>
ALTER AGGREGATE <name> ( <aggregate_signature> ) OWNER TO <new_owner>
ALTER AGGREGATE <name> ( <aggregate_signature> ) SET SCHEMA <new_schema>
where aggregate_signature is:
* |
[ <argmode> ] [ <argname> ] <argtype> [ , ... ] |
[ [ <argmode> ] [ <argname> ] <argtype> [ , ... ] ] ORDER BY [ <argmode> ] [ <argname> ] <argtype> [ , ... ]
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 also be a direct or indirect member of the new owning role, and that role must have CREATE
privilege on the aggregate function's schema. (These restrictions enforce that altering the owner does not do anything you could not do by dropping and recreating the aggregate function. However, a superuser can alter ownership of any aggregate function anyway.)
IN
or
VARIADIC
. If omitted, the default is
IN
.
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.
*
in place of the list of input data types. To reference an ordered-set aggregate function, write
ORDER BY
between the direct and aggregated argument specifications.
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.
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 aggregate function myavg
for type integer
into schema myschema
:
ALTER AGGREGATE myavg(integer) SET SCHEMA myschema;
There is no ALTER AGGREGATE
statement in the SQL standard.
CREATE AGGREGATE, DROP AGGREGATE
Parent topic: SQL Commands