如何从本地SQL Server表更新链接表列

Question

I have a local SQL Server table and a remote linked MySQL table.

I need to pull email addresses from the local table to update the remote.

This T-SQL statement works for a single update:

UPDATE openquery(SKYCOMLINK2, 'select tng_id, tng_account, tng_email from user_list where tng_account = 12345 and tng_status = ''A''') 
SET tng_email = 'blah@blah.com';

What I want to do is, for every RemoteTable record with a status of 'A', I want to pull an email address from a local SQL Server table (example for a single record):

select email 
from LocalTable 
where id = 12345

So in English: for every active record in RemoteTable (could be multiples) look for a corresponding record in LocalTable of the same account number (one record per account number) and pull the email address from it to populate the matching records in RemoteTable . If it makes it easier, the LocalTable can be the driver as below (in quasi SQL-English):

update RemoteTable 
set RemoteTable.email = LocalTable.email 
where RemoteTable.accountNum = LocalTable.accountNum 
  and LocalTable.status = 'a' 
  and RemoteTable.status = 'a'

How can I do that? Thanks in advance.

Answer 1

If MySQL doesn't have four part names and SQL Server won't accept the reference without one, you might try serverName.databaseName..tableName. Leaving the schema name blank implies the default schema. However, per this question , that may not work with all versions of SQL Server, MySQL, and the ODBC driver.

Here is another question that provides multiple ways of solving the problem: Do I have to use OpenQuery to query a MySQL Linked Server from SQL Server?