How to write multi row sub query with the row containing range of values?

Question

Hi all,
I have to include a column which contains weight ranges and it should come fom table called "report_range_parameters"
The following query will reutrn those weight ranges.
select report_parameter_min_value || ' -> ' || report_parameter_max_value
          from report_range_parameters
         WHERE report_range_parameters.report_parameter_id = 2359
           and report_range_parameters.report_parameter_group = 'GVW_GROUP'
           and report_range_parameters.report_parameter_name  = 'GVW_NAME'
                    The below query should return the values group by those weight ranges.
How could I write that sub query?
select   SUM(NVL("Class 0", 0)) "Class 0"  ,
            SUM(NVL("Class 1", 0)) "Class 1"  ,
            SUM(NVL("Class 2", 0)) "Class 2"  ,
            SUM(NVL(" ", 0)) "Total"
     FROM (
             SELECT report_data.bin_start_date_time start_date_time,
                    SUM(DECODE(report_data.gvw, 0, report_data.gvw_count, 0)) "Class 0" ,
                    SUM(DECODE(report_data.gvw, 1, report_data.gvw_count, 0)) "Class 1" ,
                    SUM(DECODE(report_data.gvw, 2, report_data.gvw_count, 0)) "Class 2" ,
                    SUM(NVL(report_data.gvw_count, 0)) " "
              FROM report_data
             GROUP BY report_data.bin_start_date_time
          ) results
   RIGHT OUTER JOIN tmp_bin_periods
                 ON results.start_date_time >= tmp_bin_periods.bin_start_date_time
                AND results.start_date_time <  tmp_bin_periods.bin_end_date_time
           GROUP BY tmp_bin_periods.bin_start_date_time,
                    tmp_bin_periods.bin_end_date_time Thanks.
Edited by: user10641405 on Jun 15, 2009 3:14 PM
Edited by: user10641405 on Jun 15, 2009 3:17 PM

Answer 1

Hi,
Assuming the following 4 things:
(1) report_range_parameters contains data like this, from your [previous thread|http://forums.oracle.com/forums/message.jspa?messageID=3541079#3541079]
id  group      name         min_value      max_value
1   gvw_group  gvw_name      0              5
2   gvw_group  gvw_name      5              10
3   gvw_group  gvw_name     10              15(2) max_value is actually outside the range (that is, a value of exactly 5.000 is counted in the '5->10' range, not the '0->5' range)
(3) the range has to match some column x that is in one of the tables in your main query
(4) You want to add that column x to the GROUP BY clause
then you shopuld do somehting like this:
select   SUM(NVL("Class 0", 0)) "Class 0"  ,
            SUM(NVL("Class 1", 0)) "Class 1"  ,
            SUM(NVL("Class 2", 0)) "Class 2"  ,
            SUM(NVL(" ", 0)) "Total"
,         report_parameter_min_value || ' -> ' || report_parameter_max_value     AS weight_range          -- New
     FROM (
             SELECT report_data.bin_start_date_time start_date_time,
                    SUM(DECODE(report_data.gvw, 0, report_data.gvw_count, 0)) "Class 0" ,
                    SUM(DECODE(report_data.gvw, 1, report_data.gvw_count, 0)) "Class 1" ,
                    SUM(DECODE(report_data.gvw, 2, report_data.gvw_count, 0)) "Class 2" ,
                    SUM(NVL(report_data.gvw_count, 0)) " "
              FROM report_data
             GROUP BY report_data.bin_start_date_time
          ) results
   RIGHT OUTER JOIN tmp_bin_periods
                 ON results.start_date_time >= tmp_bin_periods.bin_start_date_time
                AND results.start_date_time <  tmp_bin_periods.bin_end_date_time
   LEFT OUTER JOIN  report_range_parameters                                        -- New
                ON  x >= report_parameter_min_value                                    -- New
          AND x <  report_parameter_max_value                                   -- New
                AND report_range_parameters.report_parameter_id = 2359                         -- New
                and report_range_parameters.report_parameter_group = 'GVW_GROUP'               -- New
                and report_range_parameters.report_parameter_name  = 'GVW_NAME'                    -- New
           GROUP BY tmp_bin_periods.bin_start_date_time,
                    tmp_bin_periods.bin_end_date_time
              , x                                                       -- New