layout: global title: CREATE DATABASE displayTitle: CREATE 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

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Description

Creates a database with the specified name. If database with the same name already exists, an exception will be thrown.

Syntax

CREATE { DATABASE | SCHEMA } [ IF NOT EXISTS ] database_name
    [ COMMENT database_comment ]
    [ LOCATION database_directory ]
    [ WITH DBPROPERTIES ( property_name = property_value [ , ... ] ) ]

Parameters

  • database_name

    Specifies the name of the database to be created.

  • IF NOT EXISTS

    Creates a database with the given name if it does not exist. If a database with the same name already exists, nothing will happen.

  • database_directory

    Path of the file system in which the specified database is to be created. If the specified path does not exist in the underlying file system, this command creates a directory with the path. If the location is not specified, the database will be created in the default warehouse directory, whose path is configured by the static configuration spark.sql.warehouse.dir.

  • database_comment

    Specifies the description for the database.

  • WITH DBPROPERTIES ( property_name=property_value [ , ... ] )

    Specifies the properties for the database in key-value pairs.

Examples

-- Create database `customer_db`. This throws exception if database with name customer_db
-- already exists.
CREATE DATABASE customer_db;

-- Create database `customer_db` only if database with same name doesn't exist.
CREATE DATABASE IF NOT EXISTS customer_db;

-- Create database `customer_db` only if database with same name doesn't exist with 
-- `Comments`,`Specific Location` and `Database properties`.
CREATE DATABASE IF NOT EXISTS customer_db COMMENT 'This is customer database' LOCATION '/user'
    WITH DBPROPERTIES (ID=001, Name='John');

-- Verify that properties are set.
DESCRIBE DATABASE EXTENDED customer_db;
+-------------------------+--------------------------+
|database_description_item|database_description_value|
+-------------------------+--------------------------+
|            Database Name|               customer_db|
|              Description| This is customer database|
|                 Location|     hdfs://hacluster/user|
|               Properties|   ((ID,001), (Name,John))|
+-------------------------+--------------------------+

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