在1選擇語句中選擇總和和多列

Question

有沒有辦法在SQL中同時選擇列和其他列的總和？

例子：

SELECT sum(a) as car,b,c FROM toys 

Answer 1

試加GROUP BY

SELECT sum(a) as car,b,c FROM toys 
GROUP BY b, c 

Answer 2

SELECT b, 
c, 
(SELECT sum(a) FROM toys) as 'car' 
FROM toys 

Answer 3

既然你不給多的情況下，我認爲你的意思是下列之一：

SELECT (SELECT SUM(a) FROM Toys) as 'car', b, c FROM Toys; 

或

SELECT SUM(a) as Car, b, c FROM Toys GROUP BY b, c; 

Answer 4

如何：

select sum(a) over(), b, c from toy; 

，或者如果它是必需的：

select sum(a) over(partition by b), b, c from toy;