--- layout: global title: CREATE VIEW displayTitle: CREATE VIEW 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 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 Views are based on the result-set of an `SQL` query. `CREATE VIEW` constructs a virtual table that has no physical data therefore other operations like `ALTER VIEW` and `DROP VIEW` only change metadata. ### Syntax ```sql CREATE [ OR REPLACE ] [ [ GLOBAL ] TEMPORARY ] VIEW [ IF NOT EXISTS ] view_identifier create_view_clauses AS query ``` ### Parameters * **OR REPLACE** If a view of same name already exists, it will be replaced. * **[ GLOBAL ] TEMPORARY** TEMPORARY views are session-scoped and will be dropped when session ends because it skips persisting the definition in the underlying metastore, if any. GLOBAL TEMPORARY views are tied to a system preserved temporary database `global_temp`. * **IF NOT EXISTS** Creates a view if it does not exist. * **view_identifier** Specifies a view name, which may be optionally qualified with a database name. **Syntax:** `[ database_name. ] view_name` * **create_view_clauses** These clauses are optional and order insensitive. It can be of following formats. * `[ ( column_name [ COMMENT column_comment ], ... ) ]` to specify column-level comments. * `[ COMMENT view_comment ]` to specify view-level comments. * `[ TBLPROPERTIES ( property_name = property_value [ , ... ] ) ]` to add metadata key-value pairs. * **query** A [SELECT](sql-ref-syntax-qry-select.html) statement that constructs the view from base tables or other views. ### Examples ```sql -- Create or replace view for `experienced_employee` with comments. CREATE OR REPLACE VIEW experienced_employee (ID COMMENT 'Unique identification number', Name) COMMENT 'View for experienced employees' AS SELECT id, name FROM all_employee WHERE working_years > 5; -- Create a global temporary view `subscribed_movies` if it does not exist. CREATE GLOBAL TEMPORARY VIEW IF NOT EXISTS subscribed_movies AS SELECT mo.member_id, mb.full_name, mo.movie_title FROM movies AS mo INNER JOIN members AS mb ON mo.member_id = mb.id; ``` ### Related Statements * [ALTER VIEW](sql-ref-syntax-ddl-alter-view.html) * [DROP VIEW](sql-ref-syntax-ddl-drop-view.html) * [SHOW VIEWS](sql-ref-syntax-aux-show-views.html)