从链接服务器表更新 SQL 服务器本地表列

Question

I have local and a linked server tables in SSMS

• local [Arc].[dbo].[Record]
• linked server SQLSERVR.[ArcReport].[dbo].[RecordRemote]

when I query

• select * from [Arc].[dbo].[Record]
• select * from SQLSERVR.[ArcReport].[dbo].[RecordRemote]
  It brings results.

But when I query

    UPDATE [Arc].[dbo].[Record]
    SET [Arc].[dbo].[Record].Column1= SQLSERVER.[ArcReport].[dbo].[RecordRemote].Column2 
    WHERE [Arc].[dbo].[Record].id = 16

or

UPDATE localR
  SET localR.Column1= remoteR.Column2 
  FROM [Arc].[dbo].[Record] AS localR
  INNER JOIN SQLSERVER.[ArcReport].[dbo].[RecordRemote].Column2 AS remoteR
  ON localR.id= [SQLSERVER].[ArcReport].[dbo].[RecordRemote].id

it says
The multi-part identifier "SQLSERVER.ArcReport.dbo.RecordRemote.Column2" could not be bound.

Answer 1

You have made a mistake in your SQL query (see 3rd image).

1. You can not use a column in the JOIN only tables go there (see 1st image)
2. Since you defined and alias for SQLSERVER.[ArcReport].[dbo].[RecordRemote] as remoteR you must use it to access its fields ( see SQL Aliases for more info and 2nd image)

Answer 2

You need to perform a join so that SQL Server knows what row to update from.

UPDATE localR
  SET localR.Column1 = remoteR.Column2
  FROM Arc.dbo.[Record] AS localR
  INNER JOIN LinkedServerName.ArcReport.dbo.RecordRemote AS remoteR
  ON <some join condition between localR and remoteR>;

BTW your syntax wouldn't work locally, either. It essentially boils down to:

UPDATE dbo.T1
  SET C1 = dbo.T2.C2;

This is simply invalid syntax. You can't surprise add a table reference like that.

Answer 3

Your join syntax is wrong:

INNER JOIN SQLSERVER.[ArcReport].[dbo].[RecordRemote].Column2 AS remoteR <= column2 is not a table

When doing a join, you join 2 tables (not columns), with a join condition on these 2 tables:

That makes:

UPDATE localR
SET localR.Column1= remoteR.Column2 
FROM [Arc].[dbo].[Record] AS localR
INNER JOIN SQLSERVER.[ArcReport].[dbo].[RecordRemote] AS remoteR
ON localR.id= remoteR.id

Answer 4

In SQL server inner join is not necessary while updating a table from another table, where clause will do the trick. The simplify solution for your problem would be:

  UPDATE Record 
  SET Record.Column1= remoteR.Column2 
  FROM SQLSERVER.[ArcReport].[dbo].[RecordRemote] AS remoteR
  where Record.id= [SQLSERVER].[ArcReport].[dbo].[RecordRemote].id and Record.id = 16