Problem joining tables with max value from second

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Problem joining tables with max value from second

Author

Topic

dejan88
Starting Member

7 Posts

Posted - 2012-03-07 : 08:13:49

I have two tables:
T1:

ID STATUS
1 NEW
2 OPEN
3 PENDING

T2:

ID VALUE DESCRIPTION
1 2 A1
1 20 A2
2 3 B1
2 30 B2

I would like to join this two tables with left outer join but from the second table to get only DESCRIPTION for max VALUE for that ID.

Result Table:
ID DESCRIPTION
1 A2
2 B2
3 null

My sql query is:

SELECT T1.ID, T2.DESCRIPTION
FROM T1
LEFT OUTER JOIN T2
ON T1.ID=T2.ID
WHERE T2.VALUE= (SELECT MAX(VALUE)
FROM T2
WHERE T2.ID=T1.ID)

but I do not have
ID 3 in my result which I do want although I did Left Outer Join. So what do I miss?
Thanks

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2012-03-07 : 08:35:02

try to add to the WHERE clause:
OR (T2.ID IS NULL)

No, you're never too old to Yak'n'Roll if you're too young to die.

dejan88
Starting Member

7 Posts

Posted - 2012-03-07 : 09:00:35

Thanks

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