数据库实验十一

–【问题11．1】在Xk数据库中创建存储过程p_Student,该存储过程返回Student表中班级编号为“20000001”的所有行数据

CREATE PROCEDURE p_Student
AS
SELECT *
FROM Student
WHERE ClassNo='20000001';

–【问题11．2】执行存储过程p_Student

p_Student

–【问题11．3】创建存储过程p_StudengtPara，能根据给定的班级编号，返回该班级编号对应的所有学生信息

create procedure p_StudentPara 
@classno varchar(8)
as
select * from student where ClassNo=@ClassNo

–【问题11．4】使用参数名传递参数值的方法执行存储过程p_StudentPara，分别查找班级编号为
“20000001”“20000002”的所有学生信息

exec p_StudentPara  @ClassNo='20000001'
go

exec p_StudentPara  @ClassNo='20000002'
go

–【问题11．6】创建存储过程p_ClassNum，根据用户指定的班级编号统计该班的学生人数，并将学生人数返回给用户

create procedure p_ClassNum
@ClassNo varchar(8),@ClassNum smallint output
as
set @ClassNum=(select count (*)  from student
where ClassNo=@ClassNo
)
print @ClassNum

–【问题11．7】执行存储过程p_ClassNum
提示：DECLARE @ClassNo nvarchar (8),@ClassNum smallint
SET @ClassNo=‘20000001’
EXEC p_ClassNum @ClassNo,@ClassNum OUTPUT
SELECT @ClassNum
GO

DECLARE @ClassNo nvarchar (8),@ClassNum smallint
SET @ClassNo='20000001'
EXEC p_ClassNum @ClassNo,@ClassNum OUTPUT
SELECT @ClassNum
GO

–【问题11．8】删除存储过程p_Student

DROP PROCEDURE p_Student

来源：CSDN

作者：暮色醉

链接：https://blog.csdn.net/weixin_44252029/article/details/104089062