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How to Use the SUM Function with a WHERE Clause in SQL for Conditional Summation

How to Use the SUM Function with a WHERE Clause in SQL for Conditional Summation

Learn how to apply the `SUM` function effectively in SQL by using conditional aggregation to retrieve specific data from related tables. --- This video is based on the question https://stackoverflow.com/q/64613609/ asked by the user 'Humble-Self' ( https://stackoverflow.com/u/9083735/ ) and on the answer https://stackoverflow.com/a/64613672 ...

SQL Aggregate Functions

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