In RTK Query's CodeGeneration, there is an issue with the generated code when encodeQueryParams is set to true. The current generated code outputs the following logic:

queryArg.status
  ? encodeURIComponent(String(queryArg.status))
  : undefined,

With this logic, if queryArg.status is '' or 0, it returns undefined, which results in the status query parameter being omitted from the request URL. However, I believe it is more natural for the values '' and 0 to be represented as ?status= and ?status=0 in query parameters. In fact, the behavior of URLSearchParams demonstrates this as follows:

const paramsObj = { foo: "", bar: 0 };
const searchParams = new URLSearchParams(paramsObj);
console.log(searchParams.toString()); // "foo=&bar=0"

Therefore, in the generated code from the CodeGenerator, the logic should be correctly implemented as follows:

queryArg.status != null
  ? encodeURIComponent(String(queryArg.status))
  : undefined,

This code ensures that only undefined and null result in queryArg.status being undefined.