摘要:
1.根据ROWID来分select * from t_xiaoxi where rowid in(select rid from (select rownum rn,rid from(select rowid rid,cid from t_xiaoxi order by cid desc) where rownum9980) order by cid desc;执行时间0.03秒2.按分析函... 阅读全文
posted @ 2009-04-20 11:39
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