Question

I hope this doesn’t violate any rules (i’m new, and yes i did check the FAQ).

But i have the following code

SELECT DISTINCT PO_NUMBER, PO_TRACKING_NO, SUPPLIER, MIN(PO_QUANTITY),    
      SUM(SHIPPED_WT), PO_SHIPMENT_TO 
FROM VW_TRAFFIC_PO_SIDE
WHERE SYSDATE > PO_SHIPMENT_TO AND
      (PO_QUANTITY > SHIPPED_WT OR PO_TRACKING_NO IS NULL) 
GROUP BY PO_NUMBER, PO_TRACKING_NO, SUPPLIER, PO_SHIPMENT_TO
HAVING PO_QUANTITY > SUM(SHIPPED_WT)

It is suppose to do the following:
Display 1 PO# per Tracking No, [this is the distinct, and it is correct, i was able to compiple the code successfully]…next, and this is the tricky part (this is the SUM, MIN, GROUP BY and HAVING parts): I needed to combine the SHIPPED_WT of any PO_NUMBER (that is displayed), and to show that combined number if it is less than the PO_Quantity

the where statement is also correct, as i compiled it successfully, it was only when i added the above part that i ran into trouble.

EDIT: the above code NOW compile (thanks to the answer below)

HOWEVER, my logic is wrong, and it does not do what i would want it to do..the one thing it does do correctly is grab 1 PO_NUMBER with 1 PO_TRACKING_NO (there can be duplicate po_numbers as long as the PO_tracking_no is different, and there can be duplicate tracking as long as the number is different)

EDIT: Below is what the relevant columns look like, and i will explain what is wrong with it (and what i tried to do with the code that was revised

PO_NUMBER    PO_TRACKING_NO      MIN(PO_QUANTITY)  SUM(SHIPPED_WT)
123          C100                1000              750
123          C101                1000              250

the code was suppose to take records like this, and combine the SHIPPED_WT into one number (1000), and because that new number is = to the PO_QUANTITY, it should not appear in the query….in addition, the WHERE of PO_TRACKING_NO ISNULL is not working (all records with a null value in that field should be displayed, assuming it isn’t a duplicate of a PO_NUMBER and PO_TRACKING_NO)

Answer 1

I don’t think you want to group by PO_TRACKING_NO. Also, your WHERE clause could accidentally exclude rows that you want; it’s the aggregates that you want to check (the HAVING clause). If you replace the NULLs with 0s using COALESCE then the HAVING clause should cover all of your cases:

SELECT PO_NUMBER, MIN(PO_QUANTITY) AS PO_QUANTITY, SUM(COALESCE(SHIPPED_WT, 0)) AS SHIPPED_WT
FROM VW_TRAFFIC_PO_SIDE
WHERE SYSDATE > PO_SHIPMENT_TO
GROUP BY PO_NUMBER
HAVING MIN(PO_QUANTITY) > SUM(COALESCE(SHIPPED_WT, 0))