Using JOIN to two tables to find records NOT in second table...

Question

I always seem to get these types of queries wrong and need a bit of help:
I have a table of relationships called MARKETER_ACCOUNT and another table of pending relationships called ACCOUNT_ENROLLMENT.
I have accounts that can be enrolled with a MARKETER. They enter the ACCOUNT_ENROLLMENT table as Pending and on a certain Effective Date the go active and then move to the MARKETER_ACCOUNT table. If a relationship ends, it can end by either enrolling with another Marketer or if no pending enrollment they are assumed to be going back to the parent company.
So I want to find all the records that came back to the parent company (i.e. they should not have a pending record in the ACCOUNT_ENROLLMENT table but have an end date in the MARKETER_ACCOUNT table:
Select * from MARKETER_ACCOUNT M
where M.account_no NOT IN (select E.account_no from ACCOUNT_ENROLLMENT E
where E.effective_date between '08-DEC-2009' and '07-JAN-2010')
and M.expiration_date between '08-DEC-2009' and '07-JAN-2010';
This query is still running and I'm not sure where I am going wrong. I want to say GIVE me all the accounts in the MARKETER_ACCOUNT table that have an expiration date between '12/07/2009' and '01/07/2010' and where those accounts are NOT pending in the ACCOUNT_ENROLLMENT table where the effective date is for the same period.
Any help would be greatly appreciated.
Sean

Answer 1

You could possibly try the NOT EXISTS version of the query:
SELECT  *
FROM    MARKETER_ACCOUNT M
WHERE   NOT EXISTS
                SELECT  NULL
                FROM    ACCOUNT_ENROLLMENT E
                WHERE   M.ACCOUNT_NO = E.ACCOUNT_NO
                AND     E.EFFECTIVE_DATE BETWEEN TO_DATE('08-DEC-2009','DD-MON-YYYY') AND TO_DATE('07-JAN-2010','DD-MON-YYYY')
AND     M.EXPIRATION_DATE BETWEEN TO_DATE('08-DEC-2009','DD-MON-YYYY') AND TO_DATE('07-JAN-2010','DD-MON-YYYY');Otherwise check out these threads:
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