Hi Chris,

Thanks so much for your quick answer.

My problem is I have to perform 3 Joins with 2 tables with the same situation and 1 table with a numeric key. I don't have control over the source tables, but the business keys always hold numeric values and they are defined as Strings. For a fact table with 482.866 records the query takes about 6 minutes to execute. I don't know how powerful the server is but is this a reasonable amount of time? This fact table contains only delta data (records for 1 day) but imagine the historical table that has more than 165 million of rows.