| --- |
| layout: global |
| title: DROP DATABASE |
| displayTitle: DROP DATABASE |
| license: | |
| 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. |
| --- |
| |
| ### Description |
| |
| 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. |
| |
| ### Syntax |
| |
| ```sql |
| DROP { DATABASE | SCHEMA } [ IF EXISTS ] dbname [ RESTRICT | CASCADE ] |
| ``` |
| |
| ### Parameters |
| |
| * **DATABASE `|` SCHEMA** |
| |
| `DATABASE` and `SCHEMA` 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. |
| |
| ### Examples |
| |
| ```sql |
| -- 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; |
| ``` |
| |
| ### Related Statements |
| |
| * [CREATE DATABASE](sql-ref-syntax-ddl-create-database.html) |
| * [DESCRIBE DATABASE](sql-ref-syntax-aux-describe-database.html) |
| * [SHOW DATABASES](sql-ref-syntax-aux-show-databases.html) |