Graphical query builder
Build your SQL query NOT WRITING CODE , you have to drag, drop and select the columns in the tables. Here I used PostgreSQL RDBMS (Trial Edition).

 

Query Script generated

SELECT
emp.empno, emp.ename, emp.job, emp.mgr, jobhist.startdate,
jobhist.enddate, emp.hiredate, jobhist.deptno, jobhist.job
FROM
public.emp,
public.jobhist;