WITH

Stores the result of a query in a temporary table using an alias.

Syntax

The WITH clause is also known as common table expression (CTE) and subquery factoring.

WITH temporary_name AS (
   SELECT *
   FROM table_name
)
SELECT *
FROM temporary_name
WHERE condition;

You can also define multiple temporary tables using a comma and with one instance of the WITH keyword.

Example

The given query will store the result of SELECT * FROM movies into a temporary table named temporary_movies:

WITH temporary_movies AS (
   SELECT *
   FROM movies
)
SELECT *
FROM temporary_movies
WHERE year BETWEEN 2000 AND 2020;