昨天做完項目后讓測試測試了一把，測試說分頁查詢貌似不起作用，翻到第4頁以后，看到的數(shù)據(jù)結(jié)果都是相同的。
當時我就覺得很納悶，不可能啊，分頁組件應(yīng)該是好的，咋可能有問題呢。帶著疑問，我打開了自己的ide，在自己的機器上跑了一把，果然有問題。
有問題就要找問題：
首先把2條查詢結(jié)果相同的sql打印出來到數(shù)據(jù)庫中執(zhí)行：
sql1：

復(fù)制代碼 代碼如下:

select *
from (select t.*, rownum rn
from (select t_e_id, t_e_name, t_e_tel, t_e_areacode
from (select t.eid t_e_id,
t.ename t_e_name,
t.etel t_e_tel,
t.areaid t_e_areacode,
t.biz_delete_time,
decode(areaid, '0730', '0', '1') orderseq
from vr_enterprise t
where t.eid not in (select eid from t_biz_erelation))
order by orderseq, biz_delete_time nulls last) t
where rownum < 25)
where rn >= 19
sql2：
select *
from (select t.*, rownum rn
from (select t_e_id, t_e_name, t_e_tel, t_e_areacode
from (select t.eid t_e_id,
t.ename t_e_name,
t.etel t_e_tel,
t.areaid t_e_areacode,
t.biz_delete_time,
decode(areaid, '0730', '0', '1') orderseq
from vr_enterprise t
where t.eid not in (select eid from t_biz_erelation))
order by orderseq, biz_delete_time nulls last) t
where rownum <18)
where rn >= 12

復(fù)制代碼 代碼如下:

select *
from (select t.*, rownum rn
from (select t_e_id, t_e_name, t_e_tel, t_e_areacode
from (select t.eid t_e_id,
t.ename t_e_name,
t.etel t_e_tel,
t.areaid t_e_areacode,
t.biz_delete_time,
decode(areaid, '0730', '0', '1') orderseq
from vr_enterprise t
where t.eid not in (select eid from t_biz_erelation))
order by orderseq, biz_delete_time nulls last) t)m
where m.rn >= 1 and m.rn <25