Comments on: SQL Puzzle: SQL Advance Query – Report on Manager & Employee Nth level hierarchy https://www.dbrnd.com/2019/05/sql-puzzle-sql-advance-query-report-on-manager-employee-nth-level-hierarchy/ BIGData | NoSQL | MSSQL | MySQL | PostgreSQL Wed, 30 Oct 2019 10:17:48 +0000 hourly 1 https://wordpress.org/?v=7.0.4 By: koustav https://www.dbrnd.com/2019/05/sql-puzzle-sql-advance-query-report-on-manager-employee-nth-level-hierarchy/#comment-7861 Wed, 30 Oct 2019 10:17:48 +0000 https://www.dbrnd.com/?p=5865#comment-7861 select * from
(select empname as EmpName,empid as Hierarchy ,empname as FullHierarchyName from Employees where empname not in(select emp1.empname from Employees emp1,Employees emp2
where emp1.managerid=emp2.empid)
union all

select emp1.empname,emp1.empid,emp3.empname ||’..’||emp2.empname||’..’||emp1.empname FullHierarchyName from Employees emp1,Employees emp2,Employees emp3
where emp1.managerid=emp2.empid
and emp2.managerid=emp3.empid
union
select emp1.empname, emp1.empid,emp2.empname||’..’||emp1.empname FullHierarchyName from Employees emp1,Employees emp2
where emp1.managerid=emp2.empid and emp1.empname not in(select emp1.empname from Employees emp1,Employees emp2,Employees emp3
where emp1.managerid=emp2.empid
and emp2.managerid=emp3.empid )

)T1
order by 3

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