Common table expressions are awesome. They work in at least Oracle and SQL Server.
You cannot nest them, but you can use them consecutively. Thanks spender for explaining that:
WITH
x AS
(
SELECT * FROM MyTable
),
y AS
(
SELECT * FROM x
)
SELECT * FROM y
–jeroen
via: sql – Can you create nested WITH clauses for Common Table Expressions? – Stack Overflow.
Filed under: Database Development, Development, OracleDB, SQL Server, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 Image may be NSFW.
Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.
