Removes a previously defined collation.
DROP COLLATION [ IF EXISTS ] <name> [ CASCADE | RESTRICT ]
DROP COLLATION removes a previously defined collation. To be able to drop a collation, you must own the collation.
To drop the collation named
DROP COLLATION german;
DROP COLLATION command conforms to the SQL standard, apart from the
IF EXISTS option, which is a Greenplum Database extension.
Parent topic: SQL Commands