According to the MySQL manual (section 7.7.1), CHAR columns defined to be greater than
3 chars in length are converted to type VARCHAR. I understand the space efficiency
issues involved here, but when the column is used in an index, doesn't that impose a
performance penalty? Or does MySQL handle indexes in a manner different from other
RDBMS, so that this doesn't happen?
Thanks,
Mark Chalkley
P.S. If this message ends up duplicated, I apologize. I sent it a couple hours ago
and it hasn't shown up on the list yet, so I'm resending it.F
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