sql - How should I write query for this? -

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i have table columns employee_id, effective_date, salary. ie each employee, have multiple records based on when salary got changed. want print each employee salary latest effective_date. how this?

select employee_id, effective_date, salary employees t not exists     (select 1 employees tt tt.employee_id = t.employee_id , tt.effective_date > t.effective_date)

this may work?


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