$dbh->{CachedKids} = {}; # after ANALYZE or similar # from the example $dbh->prepare_cached('select "hello" from a'); print Dump $dbh->{CachedKids},"\n"; $dbh->{CachedKids} = {}; $dbh->do("analyze"); my $sth = $dbh->prepare_cached('select "hello" from a'); print "got ", $dbh->selectrow_array($sth), "\n";