Removes an index.
DROP INDEX [ CONCURRENTLY ] [ IF EXISTS ] <name> [, ...] [ CASCADE | RESTRICT ]
DROP INDEX
drops an existing index from the database system. To run this command you must be the owner of the index.
Drop the index without locking out concurrent selects, inserts, updates, and deletes on the index's table. A normal DROP INDEX
acquires an exclusive lock on the table, blocking other accesses until the index drop can be completed. With this option, the command instead waits until conflicting transactions have completed.
CASCADE
option is not supported. (Thus, an index that supports a
UNIQUE
or
PRIMARY KEY
constraint cannot be dropped this way.) Also, regular
DROP INDEX
commands can be performed within a transaction block, but
DROP INDEX CONCURRENTLY
cannot.
Remove the index title_idx
:
DROP INDEX title_idx;
DROP INDEX
is a Greenplum Database language extension. There are no provisions for indexes in the SQL standard.
ALTER INDEX, CREATE INDEX, REINDEX
Parent topic: SQL Commands