Subqueries Cannot Contain ORDER BY
Ordering must be done in the outer query.
CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
SAL NUMBER(7, 2),
DEPTNO NUMBER(2));
INSERT INTO EMP VALUES (1, 'SMITH', 'CLERK', 800, 20);
INSERT INTO EMP VALUES (2, 'ALLEN', 'SALESMAN', 1600, 30);
INSERT INTO EMP VALUES (3, 'WARD', 'SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (4, 'JONES', 'MANAGER', 2975, 20);
INSERT INTO EMP VALUES (5, 'MARTIN','SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (6, 'BLAKE', 'MANAGER', 2850, 30);
INSERT INTO EMP VALUES (7, 'CLARK', 'MANAGER', 2850, 10);
INSERT INTO EMP VALUES (8, 'SCOTT', 'ANALYST', 3000, 20);
INSERT INTO EMP VALUES (9, 'KING', 'PRESIDENT',3000, 10);
INSERT INTO EMP VALUES (10,'TURNER','SALESMAN', 1500, 30);
INSERT INTO EMP VALUES (11,'ADAMS', 'CLERK', 1500, 20);
SQL> SELECT empno, ename, sal FROM emp WHERE sal >
2 (SELECT AVG(sal) FROM emp)
3 ORDER BY sal DESC;
EMPNO ENAME SAL
---------- ---------- ----------
8 SCOTT 3000
9 KING 3000
4 JONES 2975
6 BLAKE 2850
7 CLARK 2850
SQL>
Home »
Oracle »
Subqueries »
Oracle »
Subqueries »
Single row subquery Errors:
- Single-Row Subqueries can noly Return One Row
- Subqueries Cannot Contain ORDER BY
Related: