如何从合并中删除重复项

Question

我在以下的postgres中有一个查询

SELECT coalesce(dl.emp_id, um.id) id,
       um.emp_name,
       dl.project_id,
       sum(dl.worked_hours)AS total
FROM tools_tracker.projects_master pm
FULL JOIN tools_tracker.daily_log dl ON dl.id=pm.id
FULL JOIN tools_tracker.users_master um ON dl.emp_id=um.id
AND dl.date BETWEEN '2019-04-23' AND '2019-04-26'
AND um.role='Development_Team'
GROUP BY COALESCE(dl.emp_id, um.id),
         um.emp_name,
         dl.project_id,
         dl.worked_hours
ORDER BY um.emp_name ASC

哪个给出this作为结果输出

如何从id列中删除重复项？

请让我知道， 谢谢你。

Answer 1

我认为您需要从dl.worked_hours中删除GROUP BY：

GROUP BY COALESCE(dl.emp_id, um.id),
         um.emp_name,
         dl.project_id