oracle 三層嵌套分頁查詢

Oracle三層嵌套分頁查詢 --table A  select * from (select ta.*,rownum r  from (select * from A) ta where rownum < 10) where r > 5 --注: 其實兩層就能夠，不過，兩層嵌套查詢不會用到oracle的外層條件內推機制，效率慢了點oracle rownum原理：fetch            

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