Question

Forgive me if the title (and my SQL knowledge) seems a bit vague but I will try and explain as clearly as I can.

I have a table DVE_GroupMember, in which Person_StaffNumber is a unique identifier for a person. In this table is a column GroupMember_GroupName which contains a group name that a person can be assigned to.

There is also column GroupMember_StartDate which signified when that person was assigned to that GroupMember_GroupName.

A person can have been assigned to various groups over a period of time, so if I run the following SQL, I get multiple results for the various Person_StaffNumber values in the database (where the group name contains ‘muster’)

select * 
from DVE_GroupMember 
where GroupMember_GroupName like 'muster%'

What I am trying to do, is select the most recent GroupMember_GroupName that each person has been assigned to.

I have tried the following syntax but it is generating the error ‘incorrect syntax near ‘)’

select * 
from DVE_GroupMember 
where GroupMember_GroupName like 'muster%' 
    and GroupMember_StartDate = (SELECT MAX(GroupMember_StartDate)

Would anyone be able to help me with this?

Thanks

Answer 1

SELECT
    * 
FROM
    DVE_GroupMember GM
WHERE
    GroupMember_GroupName LIKE 'muster%'
    AND GroupMember_StartDate = (
        SELECT
            MAX(GroupMember_StartDate)
        FROM
            DVE_GroupMember _GM
        WHERE
            _GM.GroupMember_GroupName LIKE 'muster%'
            AND _GM.Person_StaffNumber = GM.Person_StaffNumber)