This idea is an extension of a workaround in Combo Boxes dealing with large lists and the Delegation issues surrounding these and the Distinct function. I have tested this on a large list (30k items) and it works perfectly. Two caveats here – the number of items displayed in your combo box and the number of filtered items subject to the Distinct function (after the leading letters are entered) will both be subject to your Delegation Limit, but these should not generally be an issue. This example is using a big list Aircraft with a field Airline. The idea is to start typing the Airline name and all Distinct values starting with the input will then be avalable for selection in…