用游标查询出所有记录,用游标逐一判断,查找出工资为300整除并且名字长度大于4个字符的员工信息; 显示输出员工编号,姓名和工资
DECLARE
myrow emp%ROWTYPE;
CURSOR mycur IS SELECT * FROM emp WHERE MOD(myrow.sal,300)=0 AND length(myrow.ename)>4;
BEGIN
OPEN mycur;
FETCH mycur INTO myrow;
WHILE mycur%FOUND
LOOP
dbms_output.put_line('员工编号:'||myrow.empno||'姓名:'||myrow.ename||'工资:'||myrow.sal);
FETCH mycur INTO myrow;
END LOOP;
CLOSE mycur;
COMMIT;
END;
麻烦大神给看下,我刚开始学游标,这样写运行不出来,不知道是怎么回事?谢谢了