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What is the benefit of using a SUM query over iterating through entity objects to calculate a total value?

Iterating through entity objects is faster when dealing with very small data sets because it uses less computational power.

Using a SUM query ensures that your code is immune to SQL injection attacks.

Iterating over entity objects allows for more expressive code which is always better regardless of the data size.

A SUM query offloads calculations to the database, minimizing memory usage and improving performance.