How does nginx load balancing bring parameters like rewrite?

Question

1. Configured an nginx load balancing, and at the same time, like rewrite, the received parameters are also passed when jumping
The following code, how to configure it? Thank you

upstream backend {

server 192.168.0.14; 
server 192.168.0.15;    
}  
  server {
        location / {
            proxy_pass http://backend;
    
        }
}

Answer 1

upstream can already pass the received parameters to it