In case the UserBirthday found by the where argument doesn't exist, create a new UserBirthday with this data.
Optionalinclude?: UserBirthdayInclude<ExtArgs> | nullChoose, which related nodes to fetch as well
Optionalomit?: UserBirthdayOmit<ExtArgs> | nullOmit specific fields from the UserBirthday
Optionalselect?: UserBirthdaySelect<ExtArgs> | nullSelect specific fields to fetch from the UserBirthday
In case the UserBirthday was found with the provided where argument, update it with this data.
The filter to search for the UserBirthday to update in case it exists.
UserBirthday upsert