SQL表连接、 order by 优化

select * from (select t2.* from (select rownum r, t1.* from (Select * From (Select * From crm_Vd健康档案 Where 1 = 1 And 有效状态b = '1') T order by 显示顺序, 系统序号) t1 where rownum <= 100) t2 where t2.r > 0) T SQ

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