Spark SQL Guide

CREATE DATABASE

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 doesn't exists. 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))     |
   +----------------------------+-----------------------------+