sql-server-2005 - 请更正我的查询

Question

Select empno,sum(cast(substring(othours,0,3)as float)) as
Hour,sum(cast(substring(othours,4,5)as float)) as Minutes from tmstrans 
group by empno,othours

它显示如下数据

• 1 , 10
• 1 , 30
• 2 , 10
• 2 , 30

我需要如下数据

• 1 , 40
• 2 , 40

请帮忙

Answer 1

假设您想要SUMHour 和 Minutes 列，您必须从子句中删除该othours列。GROUP BY像这样测试它：

SELECT empno,
       SUM(CAST(SUBSTRING(othours,0,3) AS float)) AS Hour,
       SUM(CAST(SUBSTRING(othours,4,5) AS float)) AS Minutes
FROM tmstrans 
GROUP BY empno