select a.employee_name,b.employee_namefrom tasks as a, tasks as bwhere a.employee_name>b.employee_namegroup by a.employee_name,b.employee_namehaving group_concat(distinct a.task order by a.task)=group_concat(distinct b.task order by b.task)
select a.employee_name,b.employee_namefrom tasks as a, tasks as bwhere a.employee_name>b.employee_namegroup by a.employee_name,b.employee_namehaving group_concat(distinct a.task order by a.task)=group_concat(distinct b.task order by b.task)
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