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Excel tables do way more than format your data—7 things I actually use them for

Excel tables let you create consistent formulas, build smarter filters, create expanding drop-downs, and keep charts and totals up to date.

Instead of fixing Excel inconsistencies after entry, standardize the entry point with "Data Validation"

Even though it is the same person in charge, the table contains different names like "Sales Dept," "Sales," and "Sales ...

Stop inconsistent data at the 'entrance' before fixing it—Steps to create a dropdown list using Excel Data Validation and how to find values entered via copy-paste

When I aggregated the data, the same department was split into four."General Affairs Department", "General Affairs", "General ...
TechRepublic

Use Excel data validation to prevent duplicate values in a column

Prevent duplicates before they happen by combining a simple function with data validation. We may earn from vendors via affiliate links or sponsorships. This might affect product placement on our site ...