ALTER AGGREGATE

Function

ALTER AGGREGATE modifies the definition of an aggregate function.

Precautions

To use ALTER AGGREGATE, you must be the owner of the aggregate function. To change the schema of an aggregate function, you must have the CREATE permission on the new schema. To change the owner, you must be a direct or indirect member of the new role, and the role must have the CREATE permission on the aggregate function's schema. (This restricts the owner from doing anything except for deleting and recreating aggregate functions. However, the super user can change the ownership of an aggregate function in any way.)

Syntax

AlterAggregate ::= ALTER AGGREGATE name ( argtype [ , ... ] ) RENAME TO new_name;

AlterAggregate ::= ALTER AGGREGATE name ( argtype [ , ... ] ) OWNER TO new_owner;

AlterAggregate ::= ALTER AGGREGATE name ( argtype [ , ... ] ) SET SCHEMA new_schema;

Parameter Description

• name

  Name (optionally schema-qualified) of an existing aggregate function.

• argtype

  Input data type of the aggregate function. To reference a zero-parameter aggregate function, you can write an asterisk (*) instead of a list of input data types.

• new_name

  New name of the aggregate function.

• new_owner

  New owner of the aggregate function.

• new_schema

  New schema of the aggregate function.

Examples

Rename the aggregate function myavg that accepts integer-type parameters to my_average.

ALTER AGGREGATE myavg(integer) RENAME TO my_average;

Change the owner of the aggregate function myavg that accepts integer-type parameters to joe.

ALTER AGGREGATE myavg(integer) OWNER TO joe;

Move the aggregate function myavg that accepts integer-type parameters to myschema.

ALTER AGGREGATE myavg(integer) SET SCHEMA myschema;

Compatibility

The SQL standard does not contain the ALTER AGGREGATE statement.