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_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 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 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 (CREATE_AGGREGATE(7)). 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))