my $case = $case_query1->fetchall_arrayref();
my $casestr = join(q{}, @{$case});
.
.
.
my $case_stmt3 = "create table case_st_data1 as                     (SELECT
                     rd,
                     store_number
                     $casestr
                  FROM
                    test_ptw_bottom_10
                  where
                    week_end_date in ('19-SEP-09','26-sep-09')
                  group by
                     rd,
                     store_number)";