mysql 5.0存储过程学习
一.创建存储过程 1.基本语法: create procedure sp_name() begin ......... end 2.参数传递 二.调用存储过程 1.基本语法:call sp_name() 注意:存储过程名称后面必须加括号,哪怕该存储过程没有参数传递 三.删除存储过程 1.基本语法: drop procedure sp_n
一.创建存储过程
1.基本语法:
create procedure sp_name()
begin
.........
end
2.参数传递
二.调用存储过程
1.基本语法:call sp_name()
注意:存储过程名称后面必须加括号,,哪怕该存储过程没有参数传递
三.删除存储过程
1.基本语法:
drop procedure sp_name//
2.注意事项
(1)不能在一个存储过程中删除另一个存储过程,只能调用另一个存储过程
四.区块,条件,循环
1.区块定义,常用
begin
......
end;
也可以给区块起别名,如:
lable:begin
...........
end lable;
可以用leave lable;跳出区块,执行区块以后的代码
2.条件语句
以下为引用的内容:
if 条件 then
statement
else
statement
end if;
3.循环语句
(1).while循环
以下为引用的内容:
[label:] WHILE expression DO
statements
END WHILE [label] ;
(2).loop循环
以下为引用的内容:
[label:] LOOP
statements
END LOOP [label];
(3).repeat until循环
以下为引用的内容:
[label:] REPEAT
statements
UNTIL expression
END REPEAT [label] ;
五.其他常用命令
1.show procedure status
显示数据库中所有存储的存储过程基本信息,包括所属数据库,存储过程名称,创建时间等
2.show create procedure sp_name
显示某一个存储过程的详细信息

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