Using SQL to edit salary based on job id - sql

Question

Table: EMPLOYEES
Columns:
EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE, JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID
My current output from the Employees table looks like this:
EMPLOYEE_ID LAST_NAME JOB_ID SALARY
----------- ------------------------- ---------- ----------
205 Higgins AC_MGR 12000
149 Zlotkey SA_MAN 12500
201 Hartstein MK_MAN 13000
102 De Haan AD_VP 17000
101 Kochhar AD_VP 18000
My SQL:
SELECT employee_id,
last_name,
job_id,
salary
from employees
where (job_id like '%VP' OR
Job_id like '%MAN' OR
Job_id like '%MGR')
AND (salary < 6000 OR salary >11000)
order by 4
I need a way to display the salaries before and after a raise, but I also need to be able to give different raises for different job_ids. For example, giving a raise only to the VPs and not to the managers, or giving the VPs a bigger raise than the managers.

Answer 1

One option is to create a CTE which says who gets what; then (outer) join it to the original table. Something like this:
SQL> with raise (job, raise_pct) as
2 (select 'CLERK' , 10 from dual union all
3 select 'ANALYST', 20 from dual
4 )
5 select e.empno, e.ename, e.job, e.sal old_salary,
6 e.sal * (1 + r.raise_pct/100) new_salary
7 from emp e left join raise r on r.job = e.job
8 order by e.job, e.ename;
EMPNO ENAME JOB OLD_SALARY NEW_SALARY
---------- ---------- --------- ---------- ----------
7902 FORD ANALYST 3000 3600
7788 SCOTT ANALYST 3000 3600
7876 ADAMS CLERK 1100 1210
7900 JAMES CLERK 950 1045
7934 MILLER CLERK 1300 1430
7369 SMITH CLERK 800 880
7698 BLAKE MANAGER 2850
7782 CLARK MANAGER 2450
7566 JONES MANAGER 2975
7839 KING PRESIDENT 5000
7499 ALLEN SALESMAN 1600
7654 MARTIN SALESMAN 1250
7844 TURNER SALESMAN 1500
7521 WARD SALESMAN 1250
14 rows selected.
SQL>