数据仓库-按周的累加和统计月数据

公司要出一报表，计算某月数据，并按周数据的累加计算出月的数据，这里周的划分是自己规定，比如5.3号属于4月的18周，不是5月的周,格式类似这样
model cd，流通类型code，客户类型code，總重點賣場數，week19%，week19

因此在根据周的累加和统计月的数据方法如下

SELECT  /*+ FULL(T1) FULL(T2) USE_HASH(T1) */
                                T1.BASE_YW
                                ,T_LOCL.BRNC_ID
                                ,MAX(T_LOCL.BRNC_NM) BRNC_ID_NM
                                ,T_LOCL.OFFC_ID
                                ,MAX(T_LOCL.OFFC_NM) OFFC_ID_NM
                                ,T1.SHOP_ID
                                ,T_MODL.MKT_MODL_ID
                                ,T_MODL.BASC_MODL
                                ,T_CHNL.BI_CHNL_TP_02
                                ,MAX(T_BI_CHNL_TP_02.CODE_NM) BI_CHNL_TP_02_NM
                                ,T_CHNL.BI_CHNL_TP_03
                                ,MAX(T_BI_CHNL_TP_03.CODE_NM) BI_CHNL_TP_03_NM
                                ,SUM(PSI_VAL) PSI_VAL
                                ,MAX(T_YW.YW_RNK) YW_RNK
                        FROM    MCS_BI.DM_BI_TPS_SHOP_01_YW T1 --对应规定周
                                ,T_MODL --对应自然月
 /*一 周和自然月的第一周关联 这里是5.3号统计数据
5.3号在规定周里是18周最后一天 4.27-5.3
在自然月里是5月第一周，前三天 5.1-5.3
这两个时间段数据连接，能取出5.1-5.3的数据
二 5.8号在规定周里是19周 5.3-5.10
   在自然月里是5月第一周 5.1-5.8
这两个时间段数据连接，能取出5.3-5.8的数据
因此计算19周数据可以先算出19周数据 从5.3开始的数据，然后计算18周的数据截至到5.3号的数据，这样数据就完整连接上了 */
                                ,T_SHOP
                                ,T_LOCL
                                ,T_REGN
                                ,T_CHNL
                                ,T_YW
                                ,MCS_HQ.CD_CODE_LIST T_BI_CHNL_TP_02
                                ,MCS_HQ.CD_CODE_LIST T_BI_CHNL_TP_03
                        WHERE   T1.BASE_YW >= (SELECT MIN(A.BASE_YW) FROM MCS_HQ.MA_BASE_YW A WHERE A.WEEK_YM = '201504')
                        AND     T1.BASE_YW                         AND     T_YW.BASE_YW = T1.BASE_YW
                        AND     T1.BI_CHNL_PSI_TP = 'I3F'  --or SOF
                        AND     T1.SHOP_ID = T_SHOP.SHOP_ID
                        AND     T_MODL.MODL_CD = T1.MODL_CD
                        AND     T_SHOP.CITY_ID = T_REGN.CITY_ID
                        AND     T_SHOP.OFFC_ID = T_LOCL.OFFC_ID
                        AND     T_CHNL.CHNL_ID(+) = T_SHOP.SUPP_CHNL_ID
                        AND     T_BI_CHNL_TP_02.CODE_DIV(+) = 'BI_CHNL_TP_02'
                        AND     T_BI_CHNL_TP_02.LANG_CD(+) = 'CN'
                        AND     T_BI_CHNL_TP_02.CODE_CD(+) = T_CHNL.BI_CHNL_TP_02
                       
                        AND     T_BI_CHNL_TP_03.CODE_DIV(+) = 'BI_CHNL_TP_03'
                        AND     T_BI_CHNL_TP_03.LANG_CD(+) = 'CN'
                        AND     T_BI_CHNL_TP_03.CODE_CD(+) = T_CHNL.BI_CHNL_TP_03
                       
                        GROUP BY T1.BASE_YW
                                ,T_LOCL.BRNC_ID
                                ,T_LOCL.OFFC_ID
                                ,T1.SHOP_ID
                                ,T_MODL.MKT_MODL_ID
                                ,T_MODL.BASC_MODL
                                ,T_CHNL.BI_CHNL_TP_02
                                ,T_CHNL.BI_CHNL_TP_03