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  • sql语句大全之SQL Server 远程更新目标表数据

 

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本文链接:https://www.cnblogs.com/grom/p/9002943.html 

 

复制代码
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
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执行存储过程

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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
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作者:Grom 

出处:http://www.cnblogs.com/grom/ 

Where there is a will there is the way.



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