Question

All… I need a way to query identical tables across multiple databases. I have roughly 30+ databases and they all have identical tables.

    SELECT 
      a.name
      , a.address
      , b.company_id
      , c.part_no
      , c.cost
    FROM accounts a
    JOIN business b on a.whatever = b.whatever
    JOIN crazy c ON b.things = c.things

Something simple like this, but across all databases. The focus isn’t joining on multiple databases, that’s simple, it’s running this across all databases simultaneously. There’s got to be a simpler way than creating a long drawn out stored procedure, no?

Answer 1

CREATE PROC dbo.alldatabasequery 
AS 

 CREATE TABLE #temp (
 databasename varchar(500),
 name varchar(max),
 address varchar(max),
 company_id varchar(max),
 cost varchar(max)
 )
INSERT INTO #temp 
 EXEC sp_MSforeachdb N'IF ''?'' NOT IN ( ''model'',''tempdb'',''master'',''msdb'')
  BEGIN 
  SELECT databasename=''?'' 
    , a.name
    , a.address
    , b.company_id
    , c.part_no
    , c.cost
    FROM ?.dbo.accounts a
    JOIN ?.dbo.business b 
    on a.whatever = b.whatever
    JOIN ?.crazy c
    ON b.things = c.things
   END' ; 

SELECT   * FROM #temp 


GO 

EXEC dbo.alldatabasequery