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DSullSQL
Starting Member

3 Posts

Posted - 2012-02-17 : 09:52:21

Hi I am trying to run a query against data that is somewhat like this

Acct_NO Type
1 BIG
1 BIG
1 BIG
1 BIG
2 BIG
2 SMALL
3 SMALL
3 SMALL
3 SMALL
3 SMALL
3 BIG
4 BIG
4 BIG
4 BIG
4 BIG
5 SMALL
5 SMALL
5 SMALL
5 SMALL
6 BIG
6 BIG
6 BIG
6 BIG
6 SMALL
6 SMALL

As you can see some of the repeating accnt_no values have both BIG and SMALL types associated with them. What I want to do is write a query to count the number of unique account numbers that have both BIG and Small types associated with them.

Thanks,
D

X002548
Not Just a Number

15586 Posts

Posted - 2012-02-17 : 10:05:53

[code]
SELECT Acct_NO, COUNT(DISTINCT Acct_NO)
FROM Table o
WHERE EXISTS (SELECT * FROM Table i1 WHERE o.Acct_NO = i1.Acct_NO AND Type = 'BIG')
AND EXISTS (SELECT * FROM Table i2 WHERE o.Acct_NO = i2.Acct_NO AND Type = 'SMALL')
GROUP BY Acct_NO
[/code]

???

Brett

8-)

Hint: Want your questions answered fast? Follow the direction in this link
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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-02-17 : 13:15:25

[code]
SELECT COUNT(DISTINCT Accnt_No) AS Cnt
FROM
(
SELECT Acct_NO
FROM table
GROUP BY Acct_NO
HAVING COUNT(DISTINCT CASE WHEN Type IN ('BIG','SMALL') THEN 1 ELSE NULL END) = 2
)t
[/code]

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

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