ALTER_AGGREGATE(7) - Man pages

ALTER AGGREGATE(7)       PostgreSQL 15.7 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 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. 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 15.7                      2024                   ALTER AGGREGATE(7)

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