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【转自http://ondotnet.com/pub/a/dotnet/2003/05/26/datacolumn_expressions.html】Using Calculated DataColumns in ADO.NETbyMike Gunderloy05/27/2003If you have a background in database work, you have undoubtedly run into the rules of normalization. In particular, you probably internalized the rule that you 阅读全文
