For the anon subroutine to access each key at its | the subroutine's runtime, it needs to create a closure over a lexical variable (not, of course, access the global $_ variable) when the subroutine is created. Try something like (untested): 

for my $k (keys %{$self->{SQL}}) {
     ...;
     $self->{"f$k"} = sub {
                             ...;
                             $self->{$k}->execute(@_);
                             while (my $dbrow = $self->{$k}->fetchrow_
+hashref()) {
                                 ...;
                                 }   
                             return ...;
                             };  
}

[download]
Basically, all the  $_ scalars become  $k scalars.

Give a man a fish:  <%-{-{-{-<

In reply to Re: naming anonymous subroutines inner variables by AnomalousMonk
in thread naming anonymous subroutines inner variables by writch

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