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How to use Power Query in Microsoft Excel

Transform messy spreadsheets, remove errors, and refresh tables automatically without writing a single formula.

Create Dynamic Excel Data Validation Lists Using Table Spill Ranges

Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.

Microsoft Confirms SQL Zero-Day Security Vulnerability—Here’s The Fix

Microsoft has confirmed that a hacker who successfully exploits a zero-day SQL vulnerability could gain system administrator privileges. Here’s how to fix it.

Critical 0-Click Microsoft Excel Security Bug Lets Copilot Steal Data

Excel users are warned to update now, as a critical vulnerability has been confirmed that can lead to “zero-click information ...
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Comprehensive Guide to Aggregate Functions: Definition and Examples

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...