分享一个远程更新目标库数据的存储过程，适用于更新列名一致，主键为Int类型，可远程链接的数据库。
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本文连接:http://www.cnblogs.com/grom/p/9002943.html
USE [Table]–切换到源表，就是数据最新的那个表
GO
/****** Object: StoredProcedure [dbo].[proc_DataUpdate] Script Date: 2018/5/4 15:08:56 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
— =============================================
— Author: <Grom>
— Create date: <2018-05-04>
— Description: <分批更新远程数据,仅支持主键为int表>
— =============================================
CREATE PROCEDURE [dbo].[proc_DataUpdate]
@TargetInstance nvarchar(max),
@TargetDBName nvarchar(max),
@TargetUID nvarchar(max),
@TargetPWD nvarchar(max),
@LocalDBName nvarchar(max),
@PK_ID nvarchar(max),–主键列(必须为数字)
@Column nvarchar(max),–更新列名集合
@ExecSize int–每次执行数量
AS
declare @sql nvarchar(max),
@NumMax int=0,
@NumMin int=0,
@MaxID int
BEGIN
— SET NOCOUNT ON added to prevent extra result sets from
— interfering with SELECT statements.
— SET NOCOUNT ON;–打开注释可不显示执行过程，提高速度
begin try
–取最大值
set @sql = ‘select @MaxID=MAX(‘+@PK_ID+’) from ‘+@LocalDBName;
exec sp_executesql @sql,N’@MaxID int out’,@MaxID out
–循环
while(@NumMax<@MaxID)
begin
if exists (select * from tempdb.dbo.sysobjects where id = object_id(N’tempdb..##tmp_table’) and type=’U’)
drop table ##tmp_table;
SET @sql = ‘select top ‘+cast(@ExecSize as nvarchar(1000))+’ ‘+ @Column +’ into ##tmp_table from ‘+@LocalDBName+’ where ‘+@PK_ID+’>’+cast(@NumMax as nvarchar(150));
exec sp_executesql @sql;
–记录执行最大值
SET @SQL=’select @NumMax=MAX(‘+@PK_ID+’) from ##tmp_table’;
exec sp_executesql @sql,N’@NumMax int out’,@NumMax out;
–记录执行最小值
SET @SQL=’select @NumMin=MIN(‘+@PK_ID+’) from ##tmp_table’;
exec sp_executesql @sql,N’@NumMin int out’,@NumMin out;
SET @sql=’delete openrowset(”SQLOLEDB”,”’+@TargetInstance+”’;”’+@TargetUID+”’;”’+@TargetPWD+”’,[‘+@TargetDBName+’].[dbo].[‘+@LocalDBName+’])
where ‘+@PK_ID+’ between ‘+cast(@NumMin as nvarchar(200))+’ and ‘+cast(@NumMax as nvarchar(200));
exec sp_executesql @sql;
SET @sql=’insert into openrowset(”SQLOLEDB”,”’+@TargetInstance+”’;”’+@TargetUID+”’;”’+@TargetPWD+”’,[‘+@TargetDBName+’].[dbo].[‘+@LocalDBName+’])
(‘+@Column+’)
select ‘+ @Column +’ from ##tmp_table’
exec sp_executesql @sql;
end
–删除多余数据
SET @sql=’delete openrowset(”SQLOLEDB”,”’+@TargetInstance+”’;”’+@TargetUID+”’;”’+@TargetPWD+”’,[‘+@TargetDBName+’].[dbo].[‘+@LocalDBName+’])
where ‘+@PK_ID+’ >’+cast(@NumMax as nvarchar(200));
drop table ##tmp_table;
print ‘Success’;
end try
begin catch
select Error_number() as ErrorNumber, –错误代码
Error_severity() as ErrorSeverity, –错误严重级别，级别小于10 try catch 捕获不到
Error_state() as ErrorState , –错误状态码
Error_Procedure() as ErrorProcedure , –出现错误的存储过程或触发器的名称。
Error_line() as ErrorLine, –发生错误的行号
Error_message() as ErrorMessage –错误的具体信息
drop table ##tmp_table;
end catch
END
执行存储过程
USE [table] –源表
GO
DECLARE @return_value int
EXEC @return_value = [dbo].[proc_DataUpdate]
@TargetInstance = N”,–远程数据库实例 如目标库不在一个域，切勿使用内网地址
@TargetDBName = N”,–远程数据库名称
@TargetUID = N”,–用户名
@TargetPWD = N”,–密码
@LocalDBName=N”,–用于更新表名 (源表)
@PK_ID =N”,–主键列(必须为Int)
@Column=’ID,Name’,–更新列名集合 例 ‘A,B,C’
@ExecSize=200–每次执行条数
SELECT ‘Return Value’ = @return_value
GO