SQL Query Exists or Count Join

Hello all,

I have a CTE that has three fields in the table:

CTE Table:  Customer C
CustomerId, StartDate and EndDate

I then need to check if I have at least one record in a many table based on if the StartDate and EndDate is between two dates where the CustomerId = CustomerId.

Many Table:    CustomerAccounts CA
CustomerId, AcctNumber, StartDate, EndDate

I want to check the CustomerAccounts table for at least one record return WHERE C.CustomerId = CA.CustomerId AND
(CA.StartDate BETWEEN C.StartDate AND C.EndDate) AND (CA.EndDate BETWEEN C.StartDate AND C.EndDate)

How can I do this with a Exists or whatever way is best.  The result set returned should have the records from the Customer table only.
sbornstein2Asked:
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Scott PletcherSenior DBACommented:
SELECT C.*
FROM Customer C
WHERE EXISTS(
    SELECT 1
    FROM CustomerAccounts CA
    WHERE CA.CustomerId = C.CustomerId AND
        CA.StartDate BETWEEN C.StartDate AND C.EndDate AND
        CA.EndDate BETWEEN C.StartDate AND C.EndDate
    )
1

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Vitor MontalvãoMSSQL Senior EngineerCommented:
sbornstein2, do you still need help with this question?
0
sbornstein2Author Commented:
thanks
0
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