Description

This statement is used to delete an existing materialized view in order to release related resources.

For more details, please refer to Materialized View.

Syntax

DROP MATERIALIZED VIEW [ IF EXISTS ] mv_name;

Parameter Description

• IF EXISTS: Optional parameter, indicating that if the materialized view does not exist, no error will be thrown.
• mv_name: The name of the materialized view to be deleted.

Example

1. Delete the materialized view named my_mv:

DROP MATERIALIZED VIEW my_mv;

2. Delete the materialized view named `my_mv`, if the view does not exist, no error is thrown:

DROP MATERIALIZED VIEW IF EXISTS my_mv;

3. Delete multiple materialized views, namely `mv1`, `mv2`, and `mv3`:

DROP MATERIALIZED VIEW mv1, mv2, mv3;

Precautions

• Before performing a delete operation, ensure that the materialized view is no longer referenced by other database objects to avoid errors.
• Deleting a materialized view may affect queries and applications that depend on it, so make sure you have made the necessary backups and preparations before performing the delete operation.
• Using the IF EXISTS parameter can avoid errors caused by the non-existence of the materialized view. It is recommended to use this parameter in actual operations.