Filtering null values when there is no parameter passed in the url(FormHandler prepare example)

[vivekyandapalli]

In FormHandler prepare document,
the below url is working fine(filtering cross column where Yes is present)
https://learn.gramener.com/guide/formhandler/replace?c=Yes&_format=html

but, when c parameter is removed from url, ideally it should return full data, but it is filtering out null values.
https://learn.gramener.com/guide/formhandler/replace?&_format=html

[sanand0]

@vivekyandapalli sorry about the delay on the revert. Both URLs seem to have the same content:

https://learn.gramener.com/guide/formhandler/replace?c=Yes&_format=html
https://learn.gramener.com/guide/formhandler/replace?&_format=html

There is no column called "c", so "c=Yes" has no effect -- which is expected.

What were you expecting, please?

[vivekyandapalli]

@sanand0 here, c parameter is used for Cross column filtering in prepare function.

When I checked flags.csv Cross column is having null values along with Yes values. When there is no c parameter in url it is filtering those null values.