RE: dware/materialized views/nulls/defaults - Gurus help

From: Khedr, Waleed <Waleed.Khedr_at_FMR.COM>
Date: Thu, 01 Aug 2002 06:08:30 -0800
Message-ID: <F001.004A8B05.20020801060830@fatcity.com>

Can you send an example?

-----Original Message-----
Sent: Thursday, August 01, 2002 3:23 AM
To: Multiple recipients of list ORACLE-L

Okay guys after feeling like a purist and that NULLS should not be stuffed with values just because - because of course maybe slight performance issue, also is it really the same meaning? and wanting easy way to build in consistency to data without changing data - in building base tables for warehouse ran into problem creating materialized view.

Guess what? I got zero-length errors if try to decode to NULL for rows where values Great for derived fields - they default to '0's say and everything else NULLS or you have to have a separate update process to NULLS after object built which in the case of mater. views like largely defeats the purpose.

In my previous builds of dwarehouses I did end up using a default other than NULLS for all columns but seems cumbersome.

Is there a way in mat. view or CTAS I can decode to null value but avoid zero-length error without writing a function? Is there a way to specify column precision in CTAS explicitly and would that work??

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Khedr, Waleed
  INET: Waleed.Khedr_at_FMR.COM

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Thu Aug 01 2002 - 09:08:30 CDT