将多列中的1列求和

Question

Im trying to sum() the quantity field on my select query grouping them by the date value but Sql keep giving me errors saying not al columns are grouped in my GroupBy but i only wantt o group them by Date

This is my query:

SELECT   Date, Clave_PDV, Che, Lin, Dish, Dish_Name, Type, 
sum(Quantity) as Quant, Price, Total, Tur, Tur_Name, Group, 
Group_Name, Pdv_Name, St_Pla, St_Che
FROM  Dish_Sales
GROUP BY Date

How can i Sum(Quantity) grouping them by Date?

Answer 1

You would remove all the columns you do not want:

SELECT Date, sum(Quantity) as Quant
FROM Dish_Sales
GROUP BY Date;

Answer 2

If you want the sum by date you should us e

SELECT   Date, sum(Quantity) as Quant
FROM  Dish_Sales
GROUP BY Date

Otherwise you should use the group by for all column not aggregated

SELECT   Date, Clave_PDV, Che, Lin, Dish, Dish_Name, Type, 
sum(Quantity) as Quant, Price, Total, Tur, Tur_Name, Group, 
Group_Name, Pdv_Name, St_Pla, St_Che
FROM  Dish_Sales
GROUP BY Date, Clave_PDV, Che, Lin, Dish, Dish_Name, Type, 
     Price, Total, Tur, Tur_Name, Group, 
      Group_Name, Pdv_Name, St_Pla, St_Che