4、MySql的預存程序

標籤：

C:\Program Files\MySQL\MySQL Server 5.1\bin

1.1 定義無參數的預存程序
//定義語句結束用//
delimiter //
create procedure proc_teacher_noparam()
begin
   select * from teacher;
end
//

//定義語句結束用;
delimiter ;

1.2.調用無參數的預存程序
call proc_teacher_noparam();


2.1 定義輸入參數的預存程序
//定義語句結束用//
delimiter //
create procedure proc_teacher_inparam(in n int)
begin
   select * from teacher where id=n;
end
//
//定義語句結束用;
delimiter ;

2.2.調用輸入參數的預存程序
//定義變數
set @n=1;

//調用預存程序
call proc_teacher_inparam(@n);


3.1 定義有輸出參數的預存程序
drop procedure if exists proc_teacher_outparam;
delimiter //
create procedure proc_teacher_outparam(out n int)
begin
   select count(*) into n from teacher;
end
//
delimiter ;

//3.2 調用輸出參數的預存程序
set @n=1;
call proc_teacher_outparam(@n);
select @n;

//4.定義有輸入和輸出參數的預存程序
delimiter //
drop procedure if exists proc_teacher_in_outparam;
create procedure proc_teacher_in_outparam(in n int,out o int)
begin
   select count(*) into o from teacher where id=n;
end
//
delimiter ;

//4.2 調用帶有輸入和輸出參數的預存程序
sex @n=1;
call proc_teacher_inoutparam(1,@n);
select @n;

//5.1 建立輸入輸出參數是同一個變數的預存程序
delimiter //
drop procedure if exists proc_teacher_inoutparam;
create procedure proc_teacher_inoutparam(inout n int)
begin
   select count(*) into n from teacher where id=n;
end
//

delimiter ;

//5.2 調用輸入輸出參數是同一個變數的預存程序
sex @n=1;
call proc_teacher_inoutparam(@n);
select @n;

4、MySql的預存程序