代替Linq to SQL存储过程

前些天学习了在Extjs的前台下，运用Linq to SQL语言从SQL数据库中取数据。

后来，觉得Linq to SQL的语句有点麻烦，所以学习了一下SQL数据库中的存储过程去完成相似的功能。

下面，把代码贴出来：

1、单表查询：

use STU      //STU为所用数据库名
go 
create procedure STU_selectAll      //STU_selectAll为存储过程名
as 
select * from student 

1、多表查询：
use STU      //STU为所用数据库名
go 
create procedure STU_select      //STU_selectAll为存储过程名
as 
select S.stu_id,S.stu_name,C.cou_mark
from student S  inner Join  course C      //将S、C表连接起来
on S.stu_id = C.stu_id

/*带有参数的查询*/
use STU
go 
create procedure STU_select 
           @inp_stu_id int 
as 
select * from student 
where stu_id = @inp_stu_id

/*exec STU_select 2*/       //为这个查询的‘执行语句’

*插入语句*/
use STU
go 
create procedure STU_insert 
    @inp_stu_id int,
    @inp_stu_name nvarchar(10),
    @inp_stu_depart nvarchar(10),
    @inp_stu_age int 
as 
begin tran A
    insert into student values(@inp_stu_id,@inp_stu_name,@inp_stu_depart,@inp_stu_age)
commit tran A
go 
/*插入语句*/
/*exec STU_insert 7,'张成','计算机',22*/

/*修改语句*/
use STU
go 
create procedure STU_update 
    @inp_stu_id int,
    @inp_stu_name nvarchar(10),
    @inp_stu_depart nvarchar(10),
    @inp_stu_age int 
as 
begin tran A
    update student set stu_name = @inp_stu_name, stu_depart = @inp_stu_depart, stu_age = @inp_stu_age 
    where stu_id = @inp_stu_id
commit tran A
go 
/*修改语句*/

/*删除语句*/
use STU
go 
create procedure STU_delete 
    @inp_stu_id int
as 
begin tran A
    delete from student 
    where stu_id = @inp_stu_id
commit tran A
go
/*删除语句*/ 

/*一个带有双循环、输出参数的存储过程*/
use FS 
go 
create procedure printA
    @inp_i int, 
    @inp_j int,
    @out_i int output,
    @out_j int output 
as 
    while @inp_i <3
        begin 
            while @inp_j <2
                begin
                    set @inp_j = @inp_j + 1
                    set @out_j = @inp_j
                end
            set @inp_i = @inp_i + 1
            set @out_i = @inp_i
        end 
go


/*执行语句*/
declare @out_i int,@out_j int
exec printA 1,1,@out_i output,@out_j output
print @out_i
print @out_j

/*带动态参数的存储过程*/
use try 
go 
create procedure insert_xx
    @inp_url nvarchar(16)
as
    declare @tem_one nvarchar(100)
    declare @tem_four nvarchar(30)
    declare @tem_total nvarchar(250)
    if @inp_url is null
        return
    else
        set @tem_one = N'insert into x select * from  OPENROWSET(' + N'''' + N'MICROSOFT.JET.OLEDB.4.0' + N'''' + N',' + N'''' + N'Excel 5.0;HDR=YES;DATABASE=G:\' 
        set @tem_four = N'.xls' + N'''' + N',sheet1$);'
        set @tem_total = @tem_one + @inp_url + @tem_four
        EXECUTE sp_executesql @tem_total
/*带动态参数的存储过程*/