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Lookup Transformation in SSIS 2005 March 13, 2009

Posted by Arshad Ali in SQL Server Integration Services, SSIS, SSIS 2008.
Lookup Transformation in SSIS 2005
The Lookup transformation performs lookups by joining data in input columns with columns in a reference dataset/table. If there is no matching entry in the reference dataset, no join occurs and no values are returned from the reference dataset. This is an error, and the transformation fails, unless it is configured to ignore errors or redirect error rows to the error output. If there are multiple matches in the reference table, the lookup returns only the first match based on the lookup query.
I have written an article covering Lookup trasnformation in SSIS 2005 in details including different caching mechanism and detail usage example.
Refer this link for more details.


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