Single expression in distinct list

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Single expression in distinct list

Author

Topic

MichelleMA
Starting Member

32 Posts

Posted - 2009-01-22 : 10:58:00

Hi, can someone please suggest a way to do this query, I know only one expression can be specified in the select distinct list, but I can't figure out how to isolate the distinct A, B columns combination from the table without creating a temp table:

SELECT A, COUNT(B) FROM TABLEX
GROUP BY A
HAVING COUNT(B)>1
AND A IN (SELECT DISTINCT A, B FROM TABLEX)

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-01-22 : 11:00:21

did you mean this?


SELECT A, COUNT(DISTINCT B) FROM TABLEX
GROUP BY A
HAVING COUNT(DISTINCT B)>1

MichelleMA
Starting Member

32 Posts

Posted - 2009-01-22 : 13:06:45

Yes, thank you! Is there a way to return the B column in the selection?

Thanks.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-01-22 : 13:10:21

yup. like this


SELECT t1.A,t1.B,t2.BDistCount
FROM TABLEX t1
INNER JOIN
(
SELECT A, COUNT(DISTINCT B) AS BDistCount FROM TABLEX
GROUP BY A
HAVING COUNT(DISTINCT B)>1
)t2
ON t2.A=t1.A

MichelleMA
Starting Member

32 Posts

Posted - 2009-01-22 : 17:10:50

That's exactly what I needed! Thank you so much for your help!

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