如何合并具有相同数据的两行？

Question

我有一个表，其中有些数据我想合并同一行 即，如图像中所示，两个相同的行具有相同的tDateWorked，empid，jobid 我想合并此记录，以便OT和ST应该出现在同一行。

Answer 1

您可以使用聚合：

select tDateWorked, empId, craftCodeId, jobId,
       sum(ot) as ot, sum(st) as st
from t
group by tDateWorked, empId, craftCodeId, jobId;

Answer 2

如果OT，ST中只有数字量，请尝试以下操作：

SELECT
  tDateWorked, empid, jobid, SUM(OT) AS OT, SUM(ST) AS ST
FROM
  Table
GROUP BY
  tDateWorked, empid, jobid