Empty Boolean values are treated as 'false' instead of undefined

[jeremylyng]

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Appreciate your work on this project all!

As the title suggests, I'm encountering an issue when uploading a file that contains a boolean column. In the dataset, empty values haven't been defined, where as false & true should set the value accordingly. When I upload the file, the empty values return false instead.

[masiulis]

Hey @jeremylyng, currently that is not possible with checkbox field. But we could add a flag preserveUndefined to the checkbox field definition and if this flag is enabled then leave undefined instead of converting it to false. PRs are welcome for this.

[jeremylyng]

Thanks @masiulis a flag would work well. Unfortunately, I have a bit too much on my plate at the moment to help contribute.