This technical problem deals with finding the number of rows in a table where the values in two columns are equal. The input is a table with two columns, and the output is the number of rows where the values in the two columns are equal.

A.I. Evaluation of the Solution

The candidate's solution is correct and demonstrates a level of completeness. The solution uses a single query to return the number of rows where the values in the two columns are equal, which is the optimal approach.

Evaluated at: 2022-11-15 00:15:35