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I am now using latin1 (CHAR 10 column type) and I was wondering if there is more efficient character-set to store password hash consisting of a-z0-9 characters.

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I think a 5-bit encoding like Baudot would work, but I don't think MySQL supports it: en.wikipedia.org/wiki/Baudot_code encodings supported: dev.mysql.com/doc/refman/5.0/en/… –  FrustratedWithFormsDesigner Aug 29 '13 at 15:18
Why isn't the hash a-f0-9 ? then you would be able to save it as binary blob of the bytes. –  sharp12345 Aug 29 '13 at 17:39

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