my $like_string = "like upper('%$mainsearch%') ";
my @fields = qw(
    att_data mrserver owner_user lan_serv s_contact s_provider prod_deliv
);
my $like_clause = "where ser_app_name $like_string";
map { $like_clause .= " or $_ like $like_string" } @fields;


# The simplified sql statement ....
my $sql = "
    select * from (
        select * from qatest $like_clause order by ser_app_name ASC
    ) where rownum < 31
";