DROP INDEX

Description

Drops an index.

Precautions

Only the index owner, a user of a schema where the index resides, or a user who has the INDEX permission on the table where the index resides can run the DROP INDEX command. System administrators have this permission by default.

Syntax

1
2

DROP INDEX [ IF EXISTS ] 
    index_name [, ...] [ CASCADE | RESTRICT ];

Parameters

• IF EXISTS

  Reports a notice instead of an error if the specified index does not exist.

• index_name

  Specifies the name of the index to be dropped.

  Value range: name of an existing index.

• CASCADE | RESTRICT
  • CASCADE: automatically drops the objects that depend on the index.
  • RESTRICT: refuses to drop the index if any objects depend on it. This is the default action.

Examples

See Examples in "CREATE INDEX."

Helpful Links

ALTER INDEX and CREATE INDEX