Replace Temp with Query - Time?

Oi!

Sim, você deve ficar de olho no desempenho enquanto executa esta refatoração. Por outro lado, você obtém um único local onde pode implementar algum tipo de cache.

I was going to say the same Alexander says... when you have in one place, you can implement something like this:

Just to explain one thing, I've used number or null instead of just number think that in one hypothetical scenario the result can be zero, so it'll cache zero as well and not execute the complex calculation again.