Re^4: Question: Generate unique/random 12-digit keys for 25,000K records, howto??

An md5 hash of a large dataset is always a reduction of information. Different sets of information can result in the same reduction, which is actually the case with md5. There's a paper about md5 collisions.

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

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