ALL with a Multiple-Row Subquery
You use the ALL operator to compare a value from a Multiple-Row Subquery. You must =, <>,<, >, <=, or >= before ALL.
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 FROM emp WHERE sal > ALL (SELECT sal FROM emp where empno = 1 or empno = 2);
EMPNO ENAME
---------- ----------
4 JONES
6 BLAKE
7 CLARK
8 SCOTT
9 KING
SQL>
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Multiple Row Subqueries:
- Multiple-Row Subqueries
- IN/NOT IN with a Multiple-Row Subquery
- ANY with a Multiple-Row Subquery
- ALL with a Multiple-Row Subquery
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