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Editorial Team
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Asked: 2026-06-14T05:33:05+00:00

Using this query, my output includes all values where COUNT is 0, but I

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Using this query, my output includes all values where COUNT is 0, but I still get the warning that Null values have been not been included. The double joins are to get the tables linked appropriately to count the number of orders, but I want to include all NULL as well, not just where COUNT is 0. What am I missing? 

SELECT EmpNo, LastName, COUNT(CustomerOrder.OrderNo)
FROM Employee 
LEFT OUTER JOIN Customer
    ON Customer.AcctRepNo = EmpNo
LEFT OUTER JOIN CustomerOrder
    ON Customer.CustNo =CustomerOrder.CustNo 
GROUP BY EmpNo, LastName
ORDER BY COUNT(CustomerOrder.OrderNo) DESC, LastName
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1 Answer

  1. Editorial Team

    The results are fine, it is including all your values. The message it’s only saying that when the column CustomerOrder.OrderNo is null, then it is not counting them (hence, the count value of zero).

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