Querying a linked sql server

问题

I added a linked server, which is showing in the linked server list, but when I query it, it throws an error with the db server name.

EXEC sp_helpserver
EXEC sp_addlinkedserver 'aa-db-dev01'
Select * from openquery('aa-db-dev01','Select * from TestDB.dbo.users')

Msg 102, Level 15, State 1, Line 1
Incorrect syntax near 'aa-db-dev01'.

回答1:

SELECT * FROM [server].[database].[schema].[table]

This works for me. SSMS intellisense may still underline this as a syntax error, but it should work if your linked server is configured and your query is otherwise correct.

回答2:

You need to remove the quote marks from around the name of the linked server. It should be like this:

Select * from openquery(aa-db-dev01,'Select * from TestDB.dbo.users')

回答3:

You can use:

SELECT * FROM [aa-db-dev01].[TestDB].[dbo].[users];

回答4:

I use open query to perform this task like so:

select top 1 *
INTO [DATABASE_TO_INSERT_INTO].[dbo].[TABLE_TO_SELECT_INTO]
from openquery(
    [LINKED_SERVER_NAME],
    'select * from [DATABASE_ON_LINKED_SERVER].[dbo].[TABLE_TO_SELECT_FROM]'
)

The example above uses open query to select data from a database on a linked server into a database of your choosing.

Note: For completeness of reference, you may perform a simple select like so:

select top 1 * from openquery(
    [LINKED_SERVER_NAME],
    'select * from [DATABASE_ON_LINKED_SERVER].[dbo].[TABLE_TO_SELECT_FROM]'
)

回答5:

try Select * from openquery("aa-db-dev01",'Select * from users') ,the database connection should be defined in he linked server configuration

回答6:

The accepted answer works for me.

Also, in MSSQLMS, you can browse the tree in the Object Explorer to the table you want to query.

[Server] -> Server Objects -> Linked Servers -> [Linked server] -> Catalogs -> [Database] -> [table]

then Right click, Script Table as, SELECT To, New Query Window

And the query will be generated for you with the right FROM, which you can use in your JOIN

来源：https://stackoverflow.com/questions/495719/querying-a-linked-sql-server

标签

sql-server

linked-server