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my $table = 'book';
my $condition = '1';
...
while (my $row = $sth->fetchrow_hashref()) {
  print $row->{'id'},"\t",$row->{'name'},"\t",$row->{'location'},"\n";
+; 
}

my $sql = "SELECT id, name, location FROM $table WHERE ? ORDER BY ? ?"
+;

...

$sth->execute($condition,$sort_field,$sort_order);