topic Re: How to Do Common Table Expressions in SAS Programming

How to Do Common Table Expressions

DebG — Tue, 13 Sep 2022 01:03:27 GMT

proc fedsql now uses SQL:1999 standards and with that I was hoping to see CTE added. It is not clear to me if Common Table Expression (CTE) is supported, but I am unable to execute CTE outside of any database. CTE will let me break down my query into bite size pieces and reuse those pieces. Expected syntax below for clarity.

Does SAS support CTE, will it be coming soon, or have I missed it?

proc fedsql;

create table want as

(with tmp as (select * from somewhere)

,tmp2 as (select * from somewhere_else)

select a.id, b.var

from tmp a

left join tmp2 b

on a.id=b.id

);

quit;

Re: How to Do Common Table Expressions

Kurt_Bremser — Tue, 13 Sep 2022 01:04:33 GMT

I moved your question into a new thread, and gave it a proper subject.

Re: How to Do Common Table Expressions in SAS

DebG — Fri, 16 Sep 2022 13:30:28 GMT

Appreciated Kirk. CTE can be completed in passthrough in all databases which are SQL:1999 compliant. SAS is the the only exception I have found. I'm specifically interested in completed CTE in SAS datasets.