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How to Count Elements from Two Columns in SQL

How to Count Elements from Two Columns in SQL

Discover how to efficiently count combined values from two columns in SQL using a simple query. Learn the best practices for achieving accurate results with clear examples. --- This video is based on the question https://stackoverflow.com/q/62832182/ asked by the user 'Markos Tzetzis' ( https://stackoverflow.com/u/10441922/ ) and on the answer ...

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