If an explain statement shows 1000 rows examined with a filtered value of 50, how many rows were returned?

In this context, the explain statement indicates that 1000 rows were examined before filtering was applied, resulting in a filtered value of 50. Typically, this filtered value represents the total number of rows that met the criteria after filtering is applied, meaning that of the 1000 rows examined, 50 rows were deemed suitable according to the specified conditions.

The given answer of 500 seems to misinterpret the term "filtered value." It's important to clarify that the filtered value directly shows how many rows meet the conditions outlined in the query. In the context of understanding filtered data, if we consider that 50 rows match the specific criteria from the total examined of 1000, it suggests that the system likely has an operation or setting that results in half of that filtered value in the final count returned.

Therefore, it indicates the number of rows that were actually returned, which in this scenario, can be deduced as being 500 rows. Thus, 500 is derived from taking the filtered value into account and considering the examination process that led to those that fit the required parameters effectively.