VB.Net - SQL Query Help

Good Day Experts!

I am not sure if I can do all the required "checks" in one query.  Hopefully you can help me find out if it is possible and how to do it.

Status table:
     - InvoiceNumber
     - TrackingNumber
     - ServiceFailure
     - SFRejected
     - DatePC

DWINonPay table:
     - InvoiceNumber
     - TrackingNumber
     - DateImported

Select * from Status with the following requirements:

Requirements:
     - Status.ServiceFailure = 1
     AND
     - Status.SFRejected = 1
     AND
     - (DW1NonPay InvoiceNumber/TrackingNumber from Status not found
        OR
       (DW1NonPay InvoiceNumber/TrackingNumber from Status found but
        DW1NonPay.DateImported > Status.DatePC)

Please ask questions and let me know your opinions.

Thanks,
jimbo99999
Jimbo99999Asked:
Who is Participating?
 
Brian CroweConnect With a Mentor Database AdministratorCommented:
SELECT S.InvoiceNumber,
      S.TrackingNumber,
   S.ServiceFailure,
   S.SFRejected,
   S.DatePC
FROM Status AS S
LEFT OUTER JOIN DWINonPay AS D
      ON S.InvoiceNumber = D.InvoiceNumber
      AND S.TrackingNumber = D.TrackingNumber
WHERE S.ServiceFailure = 1
   AND S.SFRejected = 1
   AND (D.InvoiceNumber IS NULL OR D.DateImported > S.DatePC)
0
 
Dale FyeCommented:
Not sure what you are trying to check?  Do the requirements mentioned above reflect individual checks, or are you simply trying to identify all the records across the two tables that satisfy all of those requirements, in a single query?
0
 
Carl TawnConnect With a Mentor Systems and Integration DeveloperCommented:
Try this:
SELECT t1.* 
    FROM Status t1
         LEFT JOIN DWINonPay t2 ON t1.InvoiceNumber = t2.InvoiceNumber 
              AND t1.TrackingNumber = t2.TrackingNumber
    WHERE 
    (
        t1.ServiceFailure = 1
        AND t1.SFRejected = 1
        AND
        (
             t2.DateImported IS NULL
             OR t2.DateImported > t1.DatePC
        )
    )

Open in new window

0
Cloud Class® Course: C++ 11 Fundamentals

This course will introduce you to C++ 11 and teach you about syntax fundamentals.

 
Jimbo99999Author Commented:
Hello fyed:

Your second part is what I am trying to do...I am just not that good at complicated SQL query "stuff":

"trying to identify all the records across the two tables that satisfy all of those requirements in a single query"

Thanks,
jimbo99999
0
 
Jimbo99999Author Commented:
Hello carl_tawn:

Can you help me understand your query as I am not very good at complicated SQL query "stuff"?  Is it adding subsets of data together from both tables?

Thanks,
jimbo99999
0
 
Carl TawnSystems and Integration DeveloperCommented:
No, it is doing a LEFT JOIN between the tables, so it will join but return NULL where there is no match. The rest is just applying the rules you listed, the brackets group the logic.
0
 
Jimbo99999Author Commented:
Excellent...thanks for the exlain.  I will try it now.
0
 
Jimbo99999Author Commented:
I am finally able to get back to this project and have received known data samples to test the query and logic in my code to.

Thanks for the responses and I will try them,
jimbo99999
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.