Removes a external table data access protocol from a database.

Synopsis

DROP PROTOCOL [IF EXISTS] <name>

Description

DROP PROTOCOL removes the specified protocol from a database. A protocol name can be specified in the CREATE EXTERNAL TABLE command to read data from or write data to an external data source.

You must be a superuser or the protocol owner to drop a protocol.

Warning: If you drop a data access prococol, external tables that have been defined with the protocol will no longer be able to access the external data source.

Parameters

IF EXISTS

Do not throw an error if the protocol does not exist. A notice is issued in this case.

name

The name of an existing data access protocol.

Notes

If you drop a data access protocol, the call handlers that defined in the database that are associated with the protocol are not dropped. You must drop the functions manually.

Shared libraries that were used by the protocol should also be removed from the Greenplum Database hosts.

Compatibility

DROP PROTOCOL is a Greenplum Database extension.

See Also

CREATE EXTERNAL TABLE, CREATE PROTOCOL

Parent topic: SQL Commands