troubleshooting Question

SQL Query

9 Comments1 Solution16 ViewsLast Modified:
Hello Expert. I have this query:

SELECT        *
FROM            SalesOrderTemp AS t1
WHERE        (SONo IN
                             (SELECT        SONo
                               FROM            SalesOrderDetail AS t2)) AND (SerialNo IN
                             (SELECT        SerialNo
                               FROM            SalesOrderDetail AS t2)) AND (EventNo IN
                             (SELECT        EventNo
                               FROM            SalesOrderDetail AS t2)) or (EventNo IS NULL)

The result doesn't include the records having EventNo = NULL.
Where I'm am wrong?
Any help would be appreciated.
Thank you.
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