### What changes were proposed in this pull request? Remove the unneeded embedded inline HTML markup by using the basic markdown syntax. Please see #28414 ### Why are the changes needed? Make the doc cleaner and easily editable by MD editors. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Manually build and check Closes #28451 from huaxingao/html_cleanup. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <srowen@gmail.com>
3.2 KiB
layout | title | displayTitle | license |
---|---|---|---|
global | CREATE DATABASE | CREATE 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
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))|
+-------------------------+--------------------------+