Comments on: Update a subquery with different tables

By: carlosdl

carlosdl — Fri, 18 Feb 2011 23:19:42 +0000

Great.

You are welcome.

Different options could produce different response times. If this is going to be run regularly, it would be a good idea to look for the most efficient alternative.

By: bartbart

bartbart — Fri, 18 Feb 2011 21:56:33 +0000

Carlos,
After trying the First option,,, It worked. Thanks for your help.
I thought I’d have to connect the items prior to the sub query but i did not.

Thanks again.

By: bartbart

bartbart — Fri, 18 Feb 2011 21:07:07 +0000

Carlos,
I have not had a chance to try but the goal is to pull history information on parts (MMITNO or MHITNO) and if no usage in the past 2 years (or some time frame) then change the status (MMSTST) to 01.
We are on MS SQL 2005

By: carlosdl

carlosdl — Thu, 17 Feb 2011 21:15:55 +0000

Also, could you please explain what you are trying to accomplish (with words) ? Maybe something like this is what you are looking for:

update MVXJDTA.MITMAS 
set MMSTAT ='01' 
where MVXJDTA.MITMAS.MMITNO IN
(Select MHITNO
from MVXJDTA.MITSTA 
where MHCYP6 Between 200801 and 201102 
Group by MHITNO 
Having SUM(MHMAQT+MHPUQT + MHSOQT + MHUSQT + MHDEMQ) <= 0)

Or this (this syntax may not work in all databases):

update MVXJDTA.MITMAS m
set MMSTAT ='01' 
where EXISTS 
(Select 1
from MVXJDTA.MITSTA 
where MHCYP6 Between 200801 and 201102
AND MHITNO = m.MMITNO
Group by MHITNO 
Having SUM(MHMAQT+MHPUQT + MHSOQT + MHUSQT + MHDEMQ) <= 0)

By: carlosdl

carlosdl — Thu, 17 Feb 2011 20:58:28 +0000

What database product are you using ?