在1个select语句中选择Sum和multiple列

Question

有没有办法在SQL中同时选择列和其他列的总和？

示例：

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

Answer 1

尝试添加GROUP BY

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

Answer 2

怎么样：

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

或者，如果需要：

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

Answer 3

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

Answer 4

由于您没有提供太多上下文，我认为您的意思是以下之一：

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;