How to use group by in query

Question

In this query  i want group by item description and quatity sum
SELECT T0.[Dscription], T0.[Quantity], T0.[OpenSum],  T1.[DocNum], T2.[State] FROM DLN1 T0  INNER JOIN ODLN T1 ON T0.DocEntry = T1.DocEntry, CRD1 T2 WHERE T1.[CardCode] =  T2.[CardCode] AND  T1.[DocNum] Like '1_%%'

Answer 1

Hi YYREDDY,
When you use the GROUP clause, all the fields in the SELECT clause must either figure in the GROUP clause or be part of an aggregate function (AVG, SUM, COUNT, ...).
SELECT
    T0.Dscription, SUM(T0.Quantity), SUM(T0.OpenSum)
FROM
    DLN1 T0 INNER JOIN
    ODLN T1 ON T0.DocEntry = T1.DocEntry, CRD1 T2
WHERE
    T1.CardCode = T2.CardCode AND T1.DocNum Like '1_%%'
GROUP BY
    T0.Dscription
Regards,
Vítor Vieira