I have this query
SELECT EMPNO, ENAME, HIREDATE, DEPTNO, ROWNUM AS rn
FROM (SELECT EMPNO, ENAME, HIREDATE, DEPTNO FROM EMP ORDER BY HIREDATE DESC)
WHERE rn < 3
but the error is:
ORA-00904: "RN": invalid identifier
00904. 00000 -...
asked by
01.11.2017 / 06:56