my $query_detail1 = "select querydata from querydetail where querytitle='$querytitle'"; 
my $query_records1 = $conn->prepare($query_detail1)

##</code><code>##

my $query_detail1 = "select querydata from querydetail where querytitle=?"; 
my $query_records1 = $conn->prepare($query_detail1)

##</code><code>##

$query_records1->execute($querytitle)