Question

I cannot get this to work. I need to first find the maximum sum of vacation and sick leave hours, then find which employees who have this value for their sum of vacation and sick leave hours. I can get the 168 max, but regardless of how I arrange things I cannot seem to then get just the employees who match this criteria – I just get a full list of all employees. Code below is last attempt, based on class direction. Thanks!

SELECT e.employeeID, SUM(e.vacationhours + e.sickleavehours) AS maxHours
    FROM   humanresources.employee e 
    WHERE  EXISTS (
                   SELECT SUM(e.vacationhours + e.sickleavehours) AS totalhours 
                   FROM   humanresources.employee e) 
    GROUP  BY e.employeeID

Answer 1

I’d go for this, without using specific SQL server syntax. I guess this should work in most DBMS:

SELECT e.employeeID,
    SUM(e.vacationhours + e.sickleavehours) AS totalHours
FROM humanresources.employee e 
GROUP BY e.employeeID
HAVING SUM(e.vacationhours + e.sickleavehours) >= all
  (SELECT SUM(e.vacationhours + e.sickleavehours) FROM humanresources
   GROUP BY employeeID)