http://ping-ving.livejournal.com/ ([identity profile] ping-ving.livejournal.com) wrote in [personal profile] golosptic 2011-12-28 03:45 am (UTC)

А вот это жопа.
Вышеописанное (Да/Нет/Узнать) - достаточно прямо реализуется булевым полем с тгдд.
Null для этого и придуман.
Здесь же - три осмысленных значения.
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