Oracle之update語句優化研究 批量更新

update (select YP.DEALLOCATE_BUDGET_, YP.REMAIN_BUDGET_ from MP_YEAR_PLAN YP where YP.YEAR_PLAN_ID_ in ('3a9fdccff48c49ddb42563dbac6f3fdd', '45f05792c15d483fa9dd2d9c64c7a784')) set DEALLOCATE_BUDGET_ = REMAIN_BUDGET_；
--註釋：紅色部分可傳list

 多表關聯執行update:

update (select A.JOIN_STATE as JOIN_STATE_A, B.JOIN_STATE as JOIN_STATE_B
           from T_JOIN_SITUATION A, T_PEOPLE_INFO B
          where A.PEOPLE_NUMBER = B.PEOPLE_NUMBER
            and A.YEAR = '2011'
            and A.CITY_NUMBER = 'M00000'
            and A.TOWN_NUMBER = 'M51000')
   set JOIN_STATE_A = JOIN_STATE_B