Does Not Show Exploration Rows when first Symbol has no data


I have a code that I run on Options Data.

The Problem is that I have to add FAR OTM Strikes to the database which generally don’t have any data. But whenever there is sudden spike…they get filled with data and thats why I don’t want to lose any opportunity which may arise at that time.

The issue is my exploration doesn’t add columns if there is no data in the first analysed Symbol…is there a way by which I could run my exploration only on the symbols that have data…while keep the ones which don’t have data and also including them as soon as they have data.

Please let me know

Create a watchlist with symbols that has data and use it as a filter