Jack Douglas wrote: > There are two kinds of people on this earth, those who understand > boolean arithmatic and those who don't. I'm not one of them. Hmmm... From that, I don't know if you do. Which do I record in the understands_boolean column of the database record for you? Dang, I knew I should have had *two* flags: known_to_understand_boolean and known_to_not_understand_boolean. That would have been much simpler than allowing NULL for UNKNOWN.... -Kevin
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