通过一个查询输出3个聚合列

Question

我想计算3列各自列的营业日。 例如：

1. REC_ENTER_BUSS_DAY将计算REC_CREATED_DATE和ENTER_DATE之间的营业日。
2. REC_SCAN_BUSS_DAY将在REC_CREATED_DATE和SCAN_DT
之间进行计算 在INDX_BUS_DAY和REC_CREATED_DATE之间
3. INDX_DT。

我的日历表包含营业日指标BUS_DT_IND='Y'和'N'。

我希望一次输出所有三个端口。

任何人都可以帮我查询。

Select A.REC_ENTR_B_DY
     , B.REC_SCAN_B_DY
     , C.INDX_B_DY 
  from (select ENTR_DT
             , REC_CREATED_DT
             , SUM(WHEN BUS_DT_IND='Y' then 1 else 0) as REC_ENTR_B_DY 
          from RECORD 
          join calendar 
            on calendar.Calendar_date between ENTR_DT and REC_CREATED_DT 
         group by 1,2) A 
    LEFT JOIN (select SCAN_DT
                          , REC_CREATED_DT
                          , SUM(WHEN BUS_DT_IND='Y' then 1 else 0) as REC_SCAN_B_DY 
                       from RECORD 
                       join calendar on calendar.Calendar_date between SCAN_DT and REC_CREATED_DT 
                      group by 1,2) B 
           on A.REC_CREATED_DT=B.REC_CREATED_DT 
    LEFT JOIN (select INDX_DT
                    , REC_CREATED_DT
                    , SUM(WHEN BUS_DT_IND='Y' then 1 else 0) as REC_SCAN_B_DY 
                 from RECORD 
                 join calendar 
                   on calendar.Calendar_date between INDX_DT and REC_CREATED_DT
                group by 1,2)C 
           on A.REC_CREATED_DT=C.REC_CREATED_DT