layout | title | displayTitle | license |
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DROP DATABASE |
DROP DATABASE |
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
|
Drop a database and delete the directory associated with the database from the file system. An exception will be thrown if the database does not exist in the system.
DROP { DATABASE | SCHEMA } [ IF EXISTS ] dbname [ RESTRICT | CASCADE ]
-
DATABASE
|
SCHEMADATABASE
andSCHEMA
mean the same thing, either of them can be used. -
IF EXISTS
If specified, no exception is thrown when the database does not exist.
-
RESTRICT
If specified, will restrict dropping a non-empty database and is enabled by default.
-
CASCADE
If specified, will drop all the associated tables and functions.
-- Create `inventory_db` Database
CREATE DATABASE inventory_db COMMENT 'This database is used to maintain Inventory';
-- Drop the database and it's tables
DROP DATABASE inventory_db CASCADE;
-- Drop the database using IF EXISTS
DROP DATABASE IF EXISTS inventory_db CASCADE;