coopernurse/mymysql — comment on commit 397c5df9a391cb29451b92703473a102590d7c7d
File:  line 0
By ziutek:

There isn't any boolean type in MySQL nor any commonly accepted convention for store booleans. In many applications booleans are implemented as enum('Yes','No') or in another readable form.

So I'm not sure that we need specific convention for booleans in native engine. In my opinion it can be implemented in higher layer.