alternative to subselect query

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alternative to subselect query

Author

Topic

yumyum113
Starting Member

31 Posts

Posted - 2007-03-02 : 19:53:29

Hi,

Hope someone could help me in revising a long running query. Here is the query

select *
from table1
where classid is null
and productid not in (
select productid
from table1
where classid = 67)

In here table1 could have several occurance of productid in which productid could have different classid. The possible values of classid are: NULL,1,2,3,67. Basically I am looking for all records whose classid is null but should never had an instance in table1 where its classid is 67.

Do you have something like a "join" statment that will only include all records in the left table that is not in the right table?

Hope someone could help me with this. Thanks in advance.

-Ruel

Michael Valentine Jones
Yak DBA Kernel (pronounced Colonel)

7020 Posts

Posted - 2007-03-02 : 20:07:07

This forum is not for questions. You should post this on a TSQL forum.
"Script Library
This section is for any originally written scripts you'd like to share with the group."

CODO ERGO SUM