Nullable Foreign Keys can not be reset to NULL about tabulate HOT 4 CLOSED

Actually, the problem is wider than that: any update where any field is set to NULL field will silently fail. So it's not only that you can't change foreign keys back to NULL, you also can't change any other field of a record where there is a key already pointing to NULL.

from tabulate.

Hm, yes, this is a tricky thing. Your PR fixes for updates, but inserts still are buggy.

Do you think it's a terrible idea to eschew the use of wpdb->insert and ->update entirely, and build the SQL directly? I might have a look at doing that....

from tabulate.

Nulls are now working correctly. Do you think this is an okay fix?

Thanks for taking the time to report problems! I really appreciate it. :)

from tabulate.

This looks like a proper decent fix. Thanks for fully taking care of this issue!

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