添加總行

Question

我有一個查詢;

select ProductID, name, (unitPrice*quantity) As 'Stock Equity' 
from tproduct 
group by productID with rollup 
; 

我希望這個返回一組行，最後一個是總計算，而不是重複最後的結果？

誰能告訴我爲什麼以及如何克服這個好嗎？

這是此刻的查詢結果;

ProductID Name   Stock Equity 
1   cannon 600 D 3360 
2   cannon 550 D 1000 
3   cannon 500 D 750 
4   cannon 5D  5000 
5   cannon 650 D 9000 
6   Nikon D5100 1000 
7   Nikon D3200 420 
8   Nikon D7000 2700 
9   Nikon D800  6030 
10   Nikon D90  4770 
null   Nikon D90  4770 

Answer 1

您可以使用UNION ALL：

select ProductID, name, (unitPrice*quantity) As 'Stock Equity' 
from tproduct 
union all 
select 'total', 'total', sum(unitPrice*quantity) 
from tproduct 

見SQL Fiddle with Demo

或者你可以用這樣的：

select case when ProductID is null then 'total' else ProductId end Productid, 
    case when ProductID is null then 'total' else name end name, 
    sum(unitPrice*quantity) As 'Stock Equity' 
from tproduct 
group by ProductID with rollup 

見SQL Fiddle with Demo

Answer 2

select ProductID, 
     name, 
     (unitPrice*quantity) As 'Stock Equity', 
     (select sum(unitPrice*quantity) from tproduct) As total 
from tproduct 
group by productID