Cập nhật nhiều cột dựa trên tính toán phần trăm khôn ngoan trong Oracle

được rồi, vì vậy cuối cùng sau rất nhiều lời giải thích rõ ràng, có vẻ như nó sẽ là:

+ cập nhật:trùng lặp

merge into TBL_FIBER_INV_SIGN_OFF_SHEET DST
using (
   -- Source: original query
   with mv as (
       select * from (
          select
             circle, 
             regexp_substr(MP,'[^/]+',1,1)MAINTENANCE_ZONE_NAME,
             regexp_substr(MP,'[^/]+',1,2)MAINTENANCE_ZONE_CODE,
             SPAN_TYPE,
             SPAN_LINK_ID,
             NE_LENGTH, -- ? NE_LENGTH - 1
             ROUTE_APPROVED_BY_CMM as CMM_APPROVED_LENGTH,
             row_number()over(partition by SPAN_LINK_ID order by ROUTE_APPROVED_BY_CMM) rn
          from TBL_FIBER_INV_CMP_REPORT_MV    
          where CMM_APPROVED_DATE IS NOT NULL 
             OR ROUTE_APPROVED_BY_CMM > 0 
             OR JOB_PROGRESS_FLAG = 1
       )
       where rn=1
   )
   ,pct as (
       SELECT 
          ROUND(SUM(NVL(CALCULATED_LENGTH,0)/1000),4) AS NE_LENGTH -- ? NE_LENGTH - 2
         ,ROUND(SUM(CASE WHEN RJ_CONSTRUCTION_METHODOLOGY NOT LIKE '%AERIAL%' 
                         OR RJ_CONSTRUCTION_METHODOLOGY IS NULL 
                         THEN NVL(CALCULATED_LENGTH,0) 
                         ELSE 0 
                    END)/1000,4
               ) AS UG_LENGTH
         ,ROUND(SUM(CASE WHEN RJ_CONSTRUCTION_METHODOLOGY LIKE '%AERIAL%' 
                         THEN NVL(CALCULATED_LENGTH,0) 
                         ELSE 0 
                    END)/1000,4
               ) AS AR_LENGTH
          FROM [email protected]_LINK_NE_VIEWER
   )
   select 
      mv.*
     --,cpt.*
     ,case when mv.CMM_APPROVED_LENGTH > pct.NE_LENGTH then 0.8 * pct.UG_length
           when mv.CMM_APPROVED_LENGTH = pct.NE_LENGTH then 0.9 * pct.UG_length
      end as FSA_UG
     ,case when mv.CMM_APPROVED_LENGTH > pct.NE_LENGTH then 0.2 * pct.AR_LENGTH
           when mv.CMM_APPROVED_LENGTH = pct.NE_LENGTH then 0.1 * pct.AR_LENGTH
      end as FSA_AERIAL
   from mv, pct
   -- end of Source query
) SRC
on ( dst.SPAN_LINK_ID =  src.SPAN_LINK_ID )
when matched then update
   set FSA_UG = src.FSA_UG
      ,FSA_AERIAL = src.FSA_AERIAL;