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Unpivoting Spreadsheets into Oracle
The premise is as follows: You’ve got useful data lying in an Excel or Google spreadsheet which you’d like translated into relational table(s). This is likely going to involve normalizing the denormalized spreadsheet data on the way into the database; you are going to end up with (and want) more rows in your table than the corresponding quantity within the spreadsheet. The SQL tool for this is the UNPIVOT keyword. Continue…