Comments on: query for join

By: mrdenny

mrdenny — Thu, 04 Jun 2009 20:11:53 +0000

A table redesign is the way to go here. This is one of the many reasons that you don’t store more than one value in a single field.

By: darryn

darryn — Wed, 03 Jun 2009 10:37:05 +0000

Or, update your query (should work, but haven't tested). select r.unitid ,(select distinct description from unittypes where unittypes.unitid in ( (''''+ REPLACE(r.unitid,',',''''+','+'''')+'''') ) FOR XML PATH('') ) o from rules r Agree with advice from Msi77 though, it would be better to change the design.

By: msi77

msi77 — Wed, 03 Jun 2009 06:35:43 +0000

I think you need to change the design of Rules table, so it is not in 1NF.
You’ll have no issues with join if this table will be

id unitid
1 A1
1 A2
2 A1
2 A3

PK={id, unitid}