DROP VIEW statement
DROP VIEW statement removes the specified view, which was
originally created by the
CREATE VIEW statement. Because a view is purely a
logical construct (an alias for a query) with no physical data behind it,
VIEW only involves changes to metadata in the metastore database, not any data files
DROP VIEW [IF EXISTS] [db_name.]view_name
Statement type: DDL
Cancellation: Cannot be cancelled.
HDFS permissions: This statement does not touch any HDFS files or directories, therefore no HDFS permissions are required.
The following example creates a series of views and then drops them. These examples illustrate how views are associated with a particular database, and both the view definitions and the view names for
DROP VIEWcan refer to a view in the current database or a fully qualified view name.
-- Create and drop a view in the current database. CREATE VIEW few_rows_from_t1 AS SELECT * FROM t1 LIMIT 10; DROP VIEW few_rows_from_t1; -- Create and drop a view referencing a table in a different database. CREATE VIEW table_from_other_db AS SELECT x FROM db1.foo WHERE x IS NOT NULL; DROP VIEW table_from_other_db; USE db1; -- Create a view in a different database. CREATE VIEW db2.v1 AS SELECT * FROM db2.foo; -- Switch into the other database and drop the view. USE db2; DROP VIEW v1; USE db1; -- Create a view in a different database. CREATE VIEW db2.v1 AS SELECT * FROM db2.foo; -- Drop a view in the other database. DROP VIEW db2.v1;