When I was assigned this task, I first thought of a similar approach. But when you have over 10 fields to filter by this can be rather big. You also have to type a lot if / when something like a field name changes.

I created this example having in mind not only the use of operators but also the extension of this query to accept different logical operators between criteria too. Think of it as a dynamic environment where you can add filters to fields and also add operators like AND, OR between criteria. This would be too much typing if you wanted to cover all possible combinations.