对每个左连接行匹配重复所有基表行

您应该从工作和部门之间的交叉联接开始，然后从那里建立查询：

Select d.Department, jobs.JobIdentifierFrom    Departments d cross join        (select distinct JobIdentifier from Jobs j) ji LEFT JOIN        (Select Distinct j.JobID, j.JobIdentifier, DepartmentID,          From Jobs j Join   JobsDetail jd   on j.JobID = jd.JobID        ) jobs        on d.DepartmentID = jobs.DepartmentID andji.jobidentifer = jobs.jobIDentifier

我对JobId和JobIdentifier之间的区别还不清楚，所以这可能不太正确。

如果将ji.JobIdentifier添加到

select