Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

How can I select 2 differnt tables columns value into one column of a new table if one of the source column is NULL?

Posted on 2008-10-17
2
Medium Priority
?
166 Views
Last Modified: 2010-05-18
Hi, I have Table a with column id, and table B with column id2.  I want to select a couple columns from A and from b including those id columns.  However, If the A.id IS NULL then I would like to use the B.id2 and write these value to the same column in a new 3rd table.  Is this possible?  Thank lyou.
The query is what I have currently.
Select A.[Name] as [Interest], A.ParentResearchInterest_id as RchChildId, B.ApplicationId as ApplicationId
into dbo.CtsiRschInterest
from dbo.ResearchInterests A
FULL JOIN dbo.tmpCtsiRcshInt B
ON A.Id = B.[ApplicationId]

Open in new window

0
Comment
Question by:lapucca
  • 2
2 Comments
 
LVL 14

Expert Comment

by:Binuth
ID: 22747182
try this sample....
SELECT * 
FROM
	(
	SELECT A.Id AS ABID FROM TableA A WHERE A.Id IS NOT NULL
	UNION ALL
	SELECT B.Id AS ABID FROM TableA A WHERE A.Id IS NOT NULL
	) AB
INNER JOIN TableC C ON AB.ABID = C.ID

Open in new window

0
 
LVL 14

Accepted Solution

by:
Binuth earned 2000 total points
ID: 22747186
last query was wrong try this
SELECT * 
FROM
	(
	SELECT A.Id AS ABID FROM TableA A WHERE A.Id IS NOT NULL
	UNION ALL
	SELECT B.Id AS ABID FROM TableA B WHERE B.Id IS NOT NULL
	) AB
INNER JOIN TableC C ON AB.ABID = C.ID

Open in new window

0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

PL/SQL can be a very powerful tool for working directly with database tables. Being able to loop will allow you to perform more complex operations, but can be a little tricky to write correctly. This article will provide examples of basic loops alon…
Recursive SQL is one of the most fascinating and powerful and yet dangerous feature offered in many modern databases today using a Common Table Expression (CTE) first introduced in the ANSI SQL 99 standard. The first implementations of CTE began ap…
this video summaries big data hadoop online training demo (http://onlineitguru.com/big-data-hadoop-online-training-placement.html) , and covers basics in big data hadoop .
With just a little bit of  SQL and VBA, many doors open to cool things like synchronize a list box to display data relevant to other information on a form.  If you have never written code or looked at an SQL statement before, no problem! ...  give i…

581 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question