I need to put many custom fields in the client tab that I need to export in the excel file but it’s useless and not readable to have all of them in the list of the clients. Why not create a third check box in the custom field for the export file?
The difficulty is that exports are exports of already-created extracts of the larger database. What you are asking for is an export of the database itself, which is a more complicated structure. I’m not saying it could not be done, only that what you suggest is a fairly major departure from what is being done.
They are two different select of the same query or it can be the exact same query with some hidden results.
What I am pointing out is that currently, an export is not a query at all, merely a conversion of results into a TSV file.