請糾正我的查詢

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 

它顯示像以下

• 1數據，10
• 1,30
• 2,10
• 2,30

我需要以下數據

• 1，40
• 2，40

請幫助

Answer 1

假設你想SUM兩個小時和分鐘列，你從GROUP BY條款刪除othours列。測試這樣的：

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