PostgreSQL 7.3.4 Documentation
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# DROP AGGREGATE

## Name

DROP AGGREGATE -- remove a user-defined aggregate function

## Synopsis

    DROP AGGREGATE name ( type ) [ CASCADE | RESTRICT ]

### Inputs

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.

### Outputs

`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.

## Description

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

### Notes

Use CREATE AGGREGATE to create aggregate functions.

## Usage

To remove the myavg aggregate for type int4:

    DROP AGGREGATE myavg(int4);

## Compatibility

### SQL92

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

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