触发器、存储过程、函数 基本操作（二）

二、存储过程

1. 创建

语法
　　CREATE PROC [ EDURE ] procedure_name [ ; number ]
　　[ { @parameter data_type }
　　[ VARYING ] [ = default ] [ OUTPUT ]
　　] [ ,...n ]

　[ WITH
　　{ RECOMPILE | ENCRYPTION | RECOMPILE , ENCRYPTION } ]

　　[ FOR REPLICATION ]

AS sql_statement [ ...n ]

eg:

无参数

create proc sayHello

as

begin

print'Hello World!'

end

exec sayHello

有参数

create procedure sayHello1 @userName varchar(10)

as

begin

print'hello'+@userName+'!'

end

exec sayHello1' baby'

有输出

createproc sayHello2

@userName varchar(10),

@outVal varchar(10)OUTPUT

as

begin

print'hello '+@userName+@outVal+'!'

set@outVal='haha'

end

exec sayHello2 'aa','cc'

declare @rc int,@output varchar(10);

begin

set@output=' 123';

exec@rc=sayHello2 'A',@outputOUTPUT;

print@rc;

print'output = '+@output;

end

默认值

create proc sayHello3

@userName varchar(10),

@val1 varchar(20)='hihao',

@val2 varchar(20)='welcome!'

as

begin

print@userName+''+@val1+''+@val2+'!';

end

declare@rcint;

begin

exec @rc=sayHello3 'hll';

print @rc;

exec @rc=sayHello3 'hll2',' goodNight ';

print @rc;

exec @rc=sayHello3 'hll3',' goodNight ',' bye';

print @rc;

end

指定参数名调用

declare @rcint;

begin

exec @rc=sayHello3 'qq';

print @rc;

exec @rc=sayHello3 'qq2',@val1=' goodMorning ';

print @rc;

exec @rc=sayHello3 'qq3',@val1=' goodMorning ',@val2=' haha';

print @rc;

exec @rc=sayHello3 'qq3',@val2=' haha';

print@rc;

end

返回结果集

create proc resultSet

as

begin

select top(4)*from Teacher;

end

begin

declare @rc int;

exec @rc=resultSet;

print @rc;

end

2. 修改

alter proc sayHello

as

begin

print'Hello World2!'

end

exec sayHello

3. 删除

Drop proc proc_name

4. 查看

查看数据库已有存储过程

use jxcSoftware

go

select * from sysobjects where xtype='P'

查看单个存储过程

exec sp_helptext '存储过程名'