17.9. CREATE VIEW
Synopsis
CREATE [ OR REPLACE ] VIEW view_name AS query
Description
Create a new view of a SELECT query. The view is a logical table that can be referenced by future queries. Views do not contain any data. Instead, the query stored by the view is executed everytime the view is referenced by another query.
The optional OR REPLACE
clause causes the view to be replaced if it
already exists rather than raising an error.
Examples
Create a simple view test
over the orders
table:
CREATE VIEW test AS
SELECT orderkey, orderstatus, totalprice / 2 AS half
FROM orders
Create a view orders_by_date
that summarizes orders
:
CREATE VIEW orders_by_date AS
SELECT orderdate, sum(totalprice) AS price
FROM orders
GROUP BY orderdate
Create a view that replaces an existing view:
CREATE OR REPLACE VIEW test AS
SELECT orderkey, orderstatus, totalprice / 4 AS quarter
FROM orders