0001 ---
0002 layout: global
0003 title: ALTER DATABASE
0004 displayTitle: ALTER DATABASE
0005 license: |
0006 Licensed to the Apache Software Foundation (ASF) under one or more
0007 contributor license agreements. See the NOTICE file distributed with
0008 this work for additional information regarding copyright ownership.
0009 The ASF licenses this file to You under the Apache License, Version 2.0
0010 (the "License"); you may not use this file except in compliance with
0011 the License. You may obtain a copy of the License at
0012
0013 http://www.apache.org/licenses/LICENSE-2.0
0014
0015 Unless required by applicable law or agreed to in writing, software
0016 distributed under the License is distributed on an "AS IS" BASIS,
0017 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0018 See the License for the specific language governing permissions and
0019 limitations under the License.
0020 ---
0021
0022 ### Description
0023
0024 You can alter metadata associated with a database by setting `DBPROPERTIES`. The specified property
0025 values override any existing value with the same property name. Please note that the usage of
0026 `SCHEMA` and `DATABASE` are interchangeable and one can be used in place of the other. An error message
0027 is issued if the database is not found in the system. This command is mostly used to record the metadata
0028 for a database and may be used for auditing purposes.
0029
0030 ### Syntax
0031
0032 ```sql
0033 ALTER { DATABASE | SCHEMA } database_name
0034 SET DBPROPERTIES ( property_name = property_value [ , ... ] )
0035 ```
0036
0037 ### Parameters
0038
0039 * **database_name**
0040
0041 Specifies the name of the database to be altered.
0042
0043 ### Examples
0044
0045 ```sql
0046 -- Creates a database named `inventory`.
0047 CREATE DATABASE inventory;
0048
0049 -- Alters the database to set properties `Edited-by` and `Edit-date`.
0050 ALTER DATABASE inventory SET DBPROPERTIES ('Edited-by' = 'John', 'Edit-date' = '01/01/2001');
0051
0052 -- Verify that properties are set.
0053 DESCRIBE DATABASE EXTENDED inventory;
0054 +-------------------------+------------------------------------------+
0055 |database_description_item| database_description_value|
0056 +-------------------------+------------------------------------------+
0057 | Database Name| inventory|
0058 | Description| |
0059 | Location| file:/temp/spark-warehouse/inventory.db|
0060 | Properties|((Edit-date,01/01/2001), (Edited-by,John))|
0061 +-------------------------+------------------------------------------+
0062 ```
0063
0064 ### Related Statements
0065
0066 * [DESCRIBE DATABASE](sql-ref-syntax-aux-describe-database.html)
