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  • sqlsever存储过程学习笔记

    1,创建数据表

    use test
    create table money(
    id int identity(1,1) primary key,
    money int,
    monetary_unity char
    );

    2,考虑到货币单位的缩写一般是3个字符,所以更改货币单位的长度

    alter table [testdb].[dbo].[money] 
     alter column monetary_unity char(3)

    3,往新的表中插入几行数据

    use testdb 
    insert into [testdb ].[dbo].[money] values (1,'usd')
     insert into [testdb ].[dbo].[money] values(11,'rmb')
     insert into [testdb ].[dbo].[money] values(7,'hkd')
     insert into [testdb ].[dbo].[money] values(32,'eur')

    4,创建一个查询的存储过程并执行,绿色部分为注释

    --search if a procedure named usp_getAllMoneyInfo has existed,then drop it
    if exists (select * from sysobjects  where name='usp_getAllMoneyInfo')
    drop proc usp_getAllMoneyInfo
    go 
    --definition a procedure
    create proc usp_getAllMoneyInfo
    ---some parameters must be definited before as
    as
    ---mask to do
    select * from money
    go
    ---execute the procedure
    exec usp_getAllMoneyInfo

    5,修改一个存储过程,注意,修改存储过程时,一定是要在当前库的试图下(即management studio左上角的available databases 值是当前数据表所在的库),否则会报该存储过程无法解析!

    并且,修改存储过程时,当前窗口只能有一个可用的存储过程,否则会报错如下图所示:

    alter procedure usp_getAllMoneyInfo
    as
    insert into [testdb].[dbo].[money] values(44,'gbp')
    go
    exec usp_getAllMoneyInfo

    6,创建一个修改某字段的存储过程

    alter procedure usp_getAllMoneyInfo
    as
    update money set monetary_unity ='cny' where money=11
    go               
    exec usp_getAllMoneyInfo

    学习创建存储过程并顺便复习了一下sql基本语法吧。

    其中关于GO的含义详见  https://blog.csdn.net/zhangqidashu/article/details/17250321

    本文转载自 https://www.cnblogs.com/c-supreme/p/9482321.html 感谢作者分享

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  • 原文地址:https://www.cnblogs.com/tulpen/p/9707938.html
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