Mysql Query – Set 4

Given an Employee table with following structure

EmpIdEmpNameDepartmentManagerId

Part 1: Write a sql to retrieve all Manager’s Name with 5 or more subordinates.

Note : ManagerId is also an Employee Id.

select EmpName from Employee where EmpId IN 
(select ManagerId from Employee 
 Group by ManagerId 
 Having count(EmpName)>=5);

Part 2 : Write a sql to retrieve ManagerId who have 5 or more subordinates in one column and comma separated subordinates names in other column .

select ManagerId,group_concat(EmpName) 
From Employee
Group by ManagerId
Having count(EmpName)>=5

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