用sql游标输个一个雇员名7564,如果他的奖金为0,就给他奖金加300,如果不是0就等于200
时间: 2024-05-09 09:17:20 浏览: 7
这是一道基本的SQL编程题,可以使用游标和条件语句来实现。
首先,我们需要定义一个游标,用于遍历所有员工信息:
```
DECLARE cur_emp CURSOR FOR
SELECT ename, sal, comm
FROM emp
WHERE empno = 7564;
```
然后,我们可以使用游标的FETCH语句来获取每个员工的信息,然后判断奖金是否为0,如果为0,则将奖金加300,否则将奖金设为200:
```
DECLARE @ename VARCHAR(50), @sal FLOAT, @comm FLOAT;
OPEN cur_emp;
FETCH NEXT FROM cur_emp INTO @ename, @sal, @comm;
WHILE @@FETCH_STATUS = 0
BEGIN
IF @comm = 0
UPDATE emp SET comm = 300 WHERE empno = 7564;
ELSE
UPDATE emp SET comm = 200 WHERE empno = 7564;
FETCH NEXT FROM cur_emp INTO @ename, @sal, @comm;
END;
CLOSE cur_emp;
DEALLOCATE cur_emp;
```
最后,我们需要关闭游标并释放资源。完整的代码如下:
```
DECLARE cur_emp CURSOR FOR
SELECT ename, sal, comm
FROM emp
WHERE empno = 7564;
DECLARE @ename VARCHAR(50), @sal FLOAT, @comm FLOAT;
OPEN cur_emp;
FETCH NEXT FROM cur_emp INTO @ename, @sal, @comm;
WHILE @@FETCH_STATUS = 0
BEGIN
IF @comm = 0
UPDATE emp SET comm = 300 WHERE empno = 7564;
ELSE
UPDATE emp SET comm = 200 WHERE empno = 7564;
FETCH NEXT FROM cur_emp INTO @ename, @sal, @comm;
END;
CLOSE cur_emp;
DEALLOCATE cur_emp;
```