你能在计算字段上有一个SQL where子句吗？

Question

有没有办法做这样的事情：

 select Name, sum(Exceptions) exceptions from Results i
 where exceptions > 0
 group by (Name)

我将过滤掉计算总和字段中0的所有记录

我收到错误“无效使用聚合函数”

Answer 1

SELECT Name, SUM(Exceptions) AS exceptions
FROM Results AS r
GROUP BY (Name)
HAVING SUM(Exceptions) > 0

Answer 2

select Name, sum(Exceptions) exceptions from Results i
group by (Name)
HAVING SUM(Exceptions) > 0

HAVING是一个where子句，适用于结果集的聚合行。