Update database table from one SQL Server database table to another? - sql-server

Question

I am trying to update database fields from one SQL Server table to another.
Our production SQL Server is [spdbprod.test.com\spprod], our QA server is [spdbQA.test.com\spQA].
I need to update table in production from QA table. I using this SQL statement but, it is giving an error.
UPDATE
[spdbprod.test.com\spprod].[aspnetdb].[dbo].[Communities_Groups] as t1
SET
t1.Show = (Select t2.show from [spdbQA.test.com\spQA].[aspnetdb].[dbo].
[Communities_Groups] as t2 where t1.GroupID = t2.GroupdID)
What I am missing here?
Error:
UPDATE. ("Incorrect syntax near the keyword 'as'.")

Answer 1

You are using table alias in a wrong way. You cannot do UPDATE table1 t SET field1=val, you have to write UPDATE table1 SET field=val (Or UPDATE table1 SET field=val FROM table1 t). So change your query to
UPDATE [spdbprod.test.com\spprod].[aspnetdb].[dbo].[Communities_Groups]
SET Show = t2.show
FROM [spdbprod.test.com\spprod].[aspnetdb].[dbo].[Communities_Groups] t1
INNER JOIN [spdbQA.test.com\spQA].[aspnetdb].[dbo].
[Communities_Groups] t2 ON (t1.GroupID = t2.GroupID)

Answer 2

I know this has been answered already but this worked for me.
Add a Linked Server under Server Objects | Linked Servers:
Microsoft documentation.
Name the Linked Server [SERVER-NAME or <some ipaddress>, <some-port>]
e.g. [10.0.0.200,2345] - I am using port 2345 but the standard MS SQL port is 1433.
Example:
We have a [Customers] table
We want to update [CustomerAddress]-field for CustomerId = 123
We want to use backup data from a server called [backupServer]
The [backupServer] is the machine where we execute the SQL
This is the SQL-code:
UPDATE production
SET
CustomerAddress = backupServer.CustomerAddress
FROM
[10.0.0.200,2345].[ProductionDatabase].[dbo].[Customers] production
INNER JOIN
[BackupDatabase].[dbo].[Customers] backupServer
ON
production.CustomerId = backupServer.CustomerId
WHERE
backupServer.CustomerId = 123
Generalized format:
UPDATE production
SET
columnName = backupServer.columnName
FROM
[SERVER-NAME or IP,PORT].[ProductionDatabase].[dbo].[tableName] production
INNER JOIN
[BackupDatabase].[dbo].[tableName] backupServer
ON
production.SomeId = backupServer.SomeId
WHERE
backupServer.SomeId = <id>

Answer 3

I believe you have to have a database link (linked servers) for this to work.
I do not have access to two SQL servers here at work so I cannot test it, but I sure that you need the link.
Do you have a linked server setup?
Here is a URL that may help
http://msdn.microsoft.com/en-us/library/ms188279.aspx

Answer 4

You need to add a Linked Server under Server Objects
You can name that Linked Server either with "CHOOSEN-NAME" or
[ipaddress , port number]
how to add a linked server using tsql , please check this link : how to find linked server
for an example purpose suppose i have named the linked server
"DESTINATION_SERVER" , database name is "DESTINATION_DB" and table
name is "DESTINATION_TBL". then from your source server your query could be like this below:
UPDATE t1
SET t1.updatecolumn = t2.updatecolumn
FROM [DESTINATION_SERVER].[DESTINATION_DB].[dbo].[DESTINATION_TBL] t1
INNER JOIN [SOURCE-SERVER].[SOURCE_DB].[dbo].
[SOURCE_TBL] t2 ON (t1.matcingcolumn = t2.matchingcolumn)