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sql-ref-syntax-ddl-drop-database.md

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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.

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

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

-- 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