combine queries

Question

combine queries

kubio

Newbie

Points: 2
More actions
November 4, 2008 at 2:14 pm

#193236

Hi all,
I had to write two separate queries to get what I want: that is, knowing the branchCode, get the email addresses from another table for two columns. This query gives me the email addresses:
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID IN ('SU00U10', 'SU00TY6')
and this one gives me the ID's:
SELECT ApproverID, AlternatesID
FROM Branches
WHERE branchCode = 'E2'
so I thought I could insert the 2nd statement inside the parenthesis of the first statement, like so:
SELECT p.InternetMailbox
FROM iadb_dev.dbo.tbl_PEOPLE p
WHERE p.UniqueID =
(SELECT ApproverID, AlternatesID
FROM emh.dbo.tblEVBranchesCopy
WHERE branchCode = 'EV1')
but the code above gives error: Msg 116, Level 16, State 1, Line 1
Only one expression can be specified in the select list when the subquery is not introduced with EXISTS. I couldn't get it to work except by writing two queries:
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID =
(SELECT ApproverID FROM Branches WHERE branchCode = 'E2')
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID =
(SELECT AlternatesID FROM Branches WHERE branchCode = 'E2')
It works, but would one query be more efficient and still easy to read? good enough? suggestions?

Viewing 3 posts - 1 through 3 (of 3 total)

You must be logged in to reply to this topic. Login to reply

Johan Bijnens SSC Guru Points: 135551 More actions · Answer 1

kubio (11/4/2008)
Hi all,
I had to write two separate queries to get what I want: that is, knowing the branchCode, get the email addresses from another table for two columns. This query gives me the email addresses:
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID IN ('SU00U10', 'SU00TY6')
and this one gives me the ID's:
SELECT ApproverID, AlternatesID
FROM Branches
WHERE branchCode = 'E2'
so I thought I could insert the 2nd statement inside the parenthesis of the first statement, like so:
but the code above gives error: Msg 116, Level 16, State 1, Line 1
Only one expression can be specified in the select list when the subquery is not introduced with EXISTS. I couldn't get it to work except by writing two queries:
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID =
(SELECT ApproverID FROM Branches WHERE branchCode = 'E2')
SELECT p.EMail
FROM PEOPLE p
WHERE p.ID =
(SELECT AlternatesID FROM Branches WHERE branchCode = 'E2')
It works, but would one query be more efficient and still easy to read? good enough? suggestions?

How about:

SELECT a.ApproverID, a.AlternatesID

, p.UniqueID , p.InternetMailbox

FROM iadb_dev.dbo.tbl_PEOPLE p

left join emh.dbo.tblEVBranchesCopy a

on (p.UniqueID = a.approverID

or p.UniqueID = a.AlternatesID )

and a.branchCode = 'EV1'

Johan

Learn to play, play to learn !

Dont drive faster than your guardian angel can fly ...
but keeping both feet on the ground wont get you anywhere :w00t:

- How to post Performance Problems
- How to post data/code to get the best help[/url]

- How to prevent a sore throat after hours of presenting ppt

press F1 for solution, press shift+F1 for urgent solution 😀

Need a bit of Powershell? How about this

Who am I ? Sometimes this is me but most of the time this is me

kubio Newbie Points: 2 More actions · Answer 2

sure, change and to where and it's perfect

thank you.