I need some help about Group by sql statement.

Question

Thank you for reading my post
I am learning more sql and i have a question which is about HR schem.
how i can show Departments.department_name in the following sql query?
I want query to show department names along with department IDs.
SELECT department_id dept_id, job_id, SUM(salary)
FROM employees
GROUP BY department_id, job_id ;thanks

Answer 1

hi
like this
SQL> ed
Wrote file afiedt.buf
  1  select d.department_id dept_id, d.department_name, e.job_id, sum(e.salary)
  2  from employees e, departments d
  3  where e.department_id = d.department_id
  4* group by d.department_id, d.department_name, e.job_id
SQL> /
   DEPT_ID DEPARTMENT_NAME                JOB_ID     SUM(E.SALARY)
        10 Administration                 AD_ASST             4400
        20 Marketing                      MK_MAN             13000
        20 Marketing                      MK_REP              6000
        30 Purchasing                     PU_MAN             11000
        30 Purchasing                     PU_CLERK           13900
        40 Human Resources                HR_REP              6500
        50 Shipping                       ST_MAN             36400
        50 Shipping                       SH_CLERK           64300
        50 Shipping                       ST_CLERK           55700
        60 IT                             IT_PROG            28800
        70 Public Relations               PR_REP             10000
   DEPT_ID DEPARTMENT_NAME                JOB_ID     SUM(E.SALARY)
        80 Sales                          SA_MAN             61000
        80 Sales                          SA_REP            243500
        90 Executive                      AD_VP              34000
        90 Executive                      AD_PRES            24000
       100 Finance                        FI_MGR             12000
       100 Finance                        FI_ACCOUNT         39600
       110 Accounting                     AC_MGR             12000
       110 Accounting                     AC_ACCOUNT          8300
19 rows selected.
SQL>hope this helps
Taj