SQLBI is a blog dedicated to building Business Intelligence solutions with SQL Server.
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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...
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About Marco Russo (SQLBI)
Marco Russo is a consultant, writer and trainer specialized in Business Intelligence with Microsoft technologies. He runs the SQLBI.COM website, which is dedicated to distribute resources useful for BI developers, like Integration Services components, Analysis Services models, tools, technical information and so on. Marco is certified as MCT, MCDBA, MCSD.NET, MCSA, MCSE+I.