Script:

Select EMPNO, ENAME, JOB from emp where job ='CLERK' AND SAL >= 800

EMP Table:

FALSE :
Select EMPNO, ENAME, JOB from emp where job ='CLERK' AND JOB = 'SALESMAN'

TRUE:
Select EMPNO, ENAME, JOB from emp where job ='CLERK' AND SAL >= 800

Treatment	TRUE (T)	Resultant	FALSE (F)	Resultant
T	T T	True	T F	FALSE
F	F T	FALSE	F F	FALSE

FALSE : (No dual roles, either CLERK OR SALESMAN)

TRUE (Both conditions were true)