Help with Data set returned data

I found it for you: https://support.wix.com/en/article/velo-best-practices-for-improving-performance-in-wix-sites-with-data

At the bottom “Downloading only the fields you need”

And about how to call it from the frontend:

  1. in your page, import the function from .jsw file at the top, just like you imported wix-data before
  2. if you call it from the page onReady, make it async, like so:
$w.onReady(async function () {

If you call it from another function than the onReady function, just make that function async
3) do this inside the function:

let arrResult = await queryApplications(Email) ;
$w("#table1").rows = arrResult.items;