my $last_sql_file;
while (my $line = <$LOG>) {
    chomp $line;
    $last_sql_file = $1 if $line =~ /^executing: \@(.+)/;
    if ($line =~ /^ERROR at/) {
        unlink $last_sql_file if -f $last_sql_file; # don't try to delete this file if it was already deleted on a previous error
    }
}