On Sat, Jan 12, 2019 at 10:08 AM Ricardo Martin Gomez <rimartingomez@xxxxxxxxxxx> wrote: > > Hi, > In MYSQL Null date is equal '01/01/1900' or '01/01/1970', I don't remember but you can also use the same logic for the check_constraint. > Regards Why? PostgreSQL doesn't need hacks around this... David J.
