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Select statement

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Topic

dr223
Constraint Violating Yak Guru

444 Posts

Posted - 2012-06-21 : 05:37:27

Hi,

I have the following code

SELECT     dbo.qryPracExclude.prac_no
FROM         dbo.qryPracExclude LEFT OUTER JOIN
                      dbo.TblPracExclude ON dbo.qryPracExclude.prac_no = dbo.TblPracExclude.prac_no

qryPracExclude.prac_no = 1, 2, 3, 4
dbo.TblPracExclude.prac_no = 1, 2, 3

The results of the above gives me

prac_no
1
2
3

I want the result to give me;

prac_no
4

this prac_no is present in qryPracExclude.prac_no and not dbo.TblPracExclude.prac_no.

I tried <> instead of = but I receive duplicates and all prac_nos.

Any help will be appreciated

nigelrivett
Master Smack Fu Yak Hacker

3385 Posts

Posted - 2012-06-21 : 05:54:01

Your query shoould give all 4 values from qryPracExclude so I think there is something wrong with that.
When you correct it.

SELECT dbo.qryPracExclude.prac_no
FROM dbo.qryPracExclude
LEFT OUTER JOIN dbo.TblPracExclude
ON dbo.qryPracExclude.prac_no = dbo.TblPracExclude.prac_no
where dbo.TblPracExclude.prac_no is null

==========================================
Cursors are useful if you don't know sql.
SSIS can be used in a similar way.
Beer is not cold and it isn't fizzy.

dr223
Constraint Violating Yak Guru

444 Posts

Posted - 2012-06-21 : 05:59:58

Many thanks

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-06-21 : 17:52:45

also


SELECT q.prac_no
FROM dbo.qryPracExclude q
WHERE NOT EXISTS (SELECT 1 FROM dbo.TblPracExclude WHERE prac_no = q.prac_no)

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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