How to use multiple WITH statements in one PostgreSQL query?

Question

I would like to \"declare\" what are effectively multiple TEMP tables using the WITH statement. The query I am trying to execute is along the lines of:

WITH         


        

Answer 1

You can also chain your results using WITH statement. Eg:

WITH tab1 as (Your SQL statement),
tab2 as ( SELECT ... FROM tab1 WHERE your filter),
tab3 as ( SELECT ... FROM tab2 WHERE your filter)
SELECT * FROM tab3;