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Historical version. PostgreSQL 7.3 reached end of support in November 2007. See the current version for supported releases.

PostgreSQL 7.3.21 Documentation
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DROP AGGREGATE

Name

DROP AGGREGATE -- remove a user-defined aggregate function

DROP AGGREGATE name ( type ) [ CASCADE | RESTRICT ]

name: The name (optionally schema-qualified) of an existing aggregate function.
type: The input data type of the aggregate function, or * if the function accepts any input type. (Refer to the PostgreSQL User's Guide for further information about data types.)
CASCADE: Automatically drop objects that depend on the aggregate.
RESTRICT: Refuse to drop the aggregate if there are any dependent objects. This is the default.

DROP AGGREGATE: Message returned if the command is successful.
ERROR: RemoveAggregate: aggregate 'name' for type type does not exist: This message occurs if the aggregate function specified does not exist in the database.

DROP AGGREGATE will delete an existing aggregate definition. To execute this command the current user must be the owner of the aggregate.

Use CREATE AGGREGATE to create aggregate functions.

To remove the myavg aggregate for type int4:

DROP AGGREGATE myavg(int4);

There is no DROP AGGREGATE statement in SQL92; the statement is a PostgreSQL language extension.

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