|PostgreSQL 8.2.6 Documentation|
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DROP AGGREGATE will delete an existing aggregate function. To execute this command the current user must be the owner of the aggregate function.
Do not throw an error if the aggregate does not exist. A notice is issued in this case.
The name (optionally schema-qualified) of an existing aggregate function.
An input data type on which the aggregate function operates. To reference a zero-argument aggregate function, write * in place of the list of input data types.
Automatically drop objects that depend on the aggregate function.
Refuse to drop the aggregate function if any objects depend on it. This is the default.