CREATE DATABASE

Creates a database with the specified name. If database with the same name already exists, an exception is 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

    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, creates a directory with the path. If the location is not specified, the database is created in the default warehouse directory, whose path is configured by the static configuration spark.sql.warehouse.dir.

  • database_comment

    The description for the database.

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

    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))|
+-------------------------+--------------------------+