my $up = "UPDATE Prior_to_CI_calc_A_$region 
            SET SUM_wi           = $SUM_Weight_wi, 
                Sum_wixi_x_1000  = $SUM_wixi_x_1000_fill, 
                Sum_wi2xi_x_1000 = $SUM_wi2xi_x_1000_fill
            FROM Prior_to_CI_calc_A_$region A 
            WHERE     A.Aggregated_area LIKE '$Aggregated_area_fill' 
                  AND A.Cause LIKE '$Cause_fill'
";