Almost one month ago I made a post about a brand new Distinct component for SSIS made by Alberto Ferrari and freely available on SQLBI.EU. The most used way to get distinct rows in a Data Flow  that I've seen is to use the Sort component, asking only for distinct rows (there is a check box for that in the standard edit dialog box). The Sort ...

Alberto Ferrari has published on SQLBI.EU a Distinct component for SSIS. The big advantage is less memory used when you have few distinct values extracted from a large set of data. Component and source code are freeware. Now the challenge is: how to improve the algorithm? Goals: more fast, less memory consumption...