In a SSIS package , I need some sort of condition that include two connections.

The simplified problem is: A simple CSV import to SQL Server, DB1, table 1( col1, col2 ). I need to populate table 1 > col2 = '1' if col1 is found in another database , DB2 > table 2 ; db2 is specified as a different connection in package.

and table 1 > col2 = '2' if col1 is not found in the lookup database.

any guidance is appreciated, ta

  • To restate, you need to populate a column based on whether a reference record was found? If exists, then 1, else 2
    – billinkc
    Commented Dec 17, 2014 at 18:47
  • yes, that is the point, just that the reffernce column is located in another db, reffernced by a connection other than the connection I need to do the update. Commented Dec 18, 2014 at 9:23
  • The lookup function should do exactly what you need if I'm parsing your question correctly.
    – Zane
    Commented Dec 19, 2014 at 19:11
  • yes, it did exactly what I needed in terms of results; in terms of performance it is a little bit exaustive, I think, I find it exaustive to lookup after every record in the data set, but it works. ta Commented Dec 21, 2014 at 21:32

1 Answer 1


Put the CSV import in one data flow, then in a dependent data flow use an OLE DB Source that contains the results you need as the output of a SQL query. Feed that into an OLEDB destination.

Your query would look similar to:

SELECT t1.col1, 
CASE WHEN EXISTS (SELECT null FROM db2.dbo.table2 t2 WHERE t2.col1 = t1.col1) THEN '2'
ELSE '1' END as [col2]
FROM db1.dbo.table1 t1
  • thank you, I was not sure how to use both db1 and db2, in the same query, to which two databases I reffer with two separate connections; I managed to resolve it using a Lookup Transformation. Commented Dec 17, 2014 at 17:44

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