Thanks for your answer!

What do you think about this idea: redefine $dbh->quote() by this logic:
  1. check perl internals (SV) to find is my param a number or string
  2. if it's a number - return something like yours quote_integer(), else return original $dbh->quote()
This way we will be able to control $dbh->quote() bevaviour this way: 
$dbh->do("INSERT ... SELECT ... WHERE a=? LIMIT ?", undef,
    $a, 0+$limit);

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In reply to Re^2: $dbh->quote(..., SQL_INTEGER) by powerman
in thread $dbh->quote(..., SQL_INTEGER) by powerman

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