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MS SQL Query Over 2 Different Instances

Hi,

I would like to query two sql databases that are on the same server but in different SQL instances.

For example:

SELECT * FROM instance1.Database1.Table1
INNER JOIN instance2.Database2.Table2 ON (Table1.Col1 = Table2.Col2)

How would I do this? Would I have to configure a linked server by using sp_addlinkedserver?

Thanks

ASKER CERTIFIED SOLUTION

Guy Hengel [angelIII / a3]

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spen_lang

ASKER

I thought as much, thanks for your quick response. Do you have anymore information that may help me in setting up the linked servers? Any useful resources?

spen_lang

ASKER

Great response, thanks.

Guy Hengel [angelIII / a3]

I thought I posted the links already:

generate topic:
msdn.microsoft.com/en-us/library/aa213778(SQL.80).aspx

sp_addlinkedserver:
http://msdn.microsoft.com/en-us/library/aa259589(SQL.80).aspx

Jagdish Devaku

using linked server we can do this...
below is the syntax to add the linked server...
once you add the linked server on an instance to access the database on another instance... then you can run the queries as below
SELECT * FROM Database1.Table1 t1
INNER JOIN <'remoteip\instance'>.Database2.Table2 t2 ON (t1.Col1 = t2.Col2)
let me know if you have any issues...

exec sp_addlinkedserver 'remoteip\instance'   -- accept defaults for all other params
exec sp_addlinkedsrvlogin @rmtsrvname='remoteip\instance', @useself=false, @locallogin=null,  @rmtuser='username', @rmtpassword='password'

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