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In the duplicate world, definition means everything. That’s because a duplicate is subjective to the context of its related data. Duplicates can occur within a single column, across multiple columns ...

Microsoft Excel spreadsheets frequently use similar formulas along columns. For example, you might need to keep a running total or tabulate a list of product inventories. Repetitively typing each ...

Excel 2013 can locate duplicate rows as long as one column contains a unique identifier for each record, such as a product ID or account number. By referencing this identifier, you can find duplicates ...

Block bad data, duplicates, and incorrect dates with these custom rules.