Um, yes. I forgot about the $a,$b gotcha. <nit> Apart from that mistake, your example hash 
$hash = {
  1 => {
    key1 => string1,
    key2 => string2
  }
  2 => {
    key1 => string1,
    key2 => string2
  }
}

[download]

is very badly chosen, since the values for each key of the sub-hashes are identical. What do you expect sort to do for you? ,-) </nit>

--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}

In reply to Re^3: sort hash after value from hash in hash by shmem
in thread sort hash after value from hash in hash by ocs

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