Question

In MS SQL Server, using the following data, how do I find empIds that have dept 10 complete (=1) and no entry for dept 11?

deptId    empId   complete
10         3         1
11         3         0
10         4         1
10         5         1
11         5         0
12         5         1
10         6         1
10         7         1
11         7         0

This should return empIds 4 and 6.

Answer 1

Response:

select distinct empId
from employees e
where e.deptId= 10 and complete = 1
and e.emId not in
  (select s_e.empId
   from employees s_e 
   where s_e.deptId = 11
   )

the query is the list of employees that have dept 10 complete (=1)

the subquery is the list of employees that has entry for dept11.

With CTE:

WITH employees_excluded_CTE (idEmp)
AS
(
   select s_e.empId
       from employees s_e 
       where s_e.deptId = 11
)
 select distinct empId
    from employees e
    where e.deptId= 10 and complete = 1
    and e.emId not in
      (select s_e.empId
       from employees_excluded_CTE
       );
GO