SELECT *
 FROM (Select ROWNUM AS ROWNO, T.*
      from k_task T
     where Flight_date between to_date('20060501', 'yyyymmdd') and
        to_date('20060731', 'yyyymmdd')
      AND ROWNUM <= 20) TABLE_ALIAS
WHERE TABLE_ALIAS.ROWNO >= 10;

2.有ORDER BY排序的寫(xiě)法。(效率最高)

經(jīng)過(guò)測(cè)試，此方法隨著查詢(xún)范圍的擴(kuò)大，速度也會(huì)越來(lái)越慢！

sql語(yǔ)句如下：

SELECT *
 FROM (SELECT TT.*, ROWNUM AS ROWNO
      FROM (Select t.*
          from k_task T
          where flight_date between to_date('20060501', 'yyyymmdd') and
             to_date('20060531', 'yyyymmdd')
          ORDER BY FACT_UP_TIME, flight_no) TT
     WHERE ROWNUM <= 20) TABLE_ALIAS
where TABLE_ALIAS.rowno >= 10;

3.無(wú)ORDER BY排序的寫(xiě)法。(建議使用方法1代替)

此方法隨著查詢(xún)數(shù)據(jù)量的擴(kuò)張，速度會(huì)越來(lái)越慢！

sql語(yǔ)句如下：

SELECT *
 FROM (Select ROWNUM AS ROWNO, T.*
      from k_task T
     where Flight_date between to_date('20060501', 'yyyymmdd') and
        to_date('20060731', 'yyyymmdd')) TABLE_ALIAS
WHERE TABLE_ALIAS.ROWNO <= 20
  AND TABLE_ALIAS.ROWNO >= 10;
TABLE_ALIAS.ROWNO between 10 and 100;

4.有ORDER BY排序的寫(xiě)法.(建議使用方法2代替)

此方法隨著查詢(xún)范圍的擴(kuò)大，速度也會(huì)越來(lái)越慢！

sql語(yǔ)句如下：

SELECT *
 FROM (SELECT TT.*, ROWNUM AS ROWNO
      FROM (Select *
          from k_task T
          where flight_date between to_date('20060501', 'yyyymmdd') and
             to_date('20060531', 'yyyymmdd')
          ORDER BY FACT_UP_TIME, flight_no) TT) TABLE_ALIAS
where TABLE_ALIAS.rowno BETWEEN 10 AND 20;

5.另類(lèi)語(yǔ)法。(有ORDER BY寫(xiě)法）

該語(yǔ)法風(fēng)格與傳統(tǒng)的SQL語(yǔ)法不同，不方便閱讀與理解，為規(guī)范與統(tǒng)一標(biāo)準(zhǔn)，不推薦使用。此處貼出代碼供大家參考之用。

sql語(yǔ)句如下：

With partdata as(
 SELECT ROWNUM AS ROWNO, TT.* FROM (Select *
         from k_task T
         where flight_date between to_date('20060501', 'yyyymmdd') and
            to_date('20060531', 'yyyymmdd')
         ORDER BY FACT_UP_TIME, flight_no) TT
  WHERE ROWNUM <= 20)
  Select * from partdata where rowno >= 10;

6.另類(lèi)語(yǔ)法。(無(wú)ORDER BY寫(xiě)法）

With partdata as(
 Select ROWNUM AS ROWNO, T.*
  From K_task T
  where Flight_date between to_date('20060501', 'yyyymmdd') and
     To_date('20060531', 'yyyymmdd')
   AND ROWNUM <= 20)
  Select * from partdata where Rowno >= 10;

相信本文所述代碼能夠?qū)Υ蠹矣幸欢ǖ膮⒖冀梃b價(jià)值。

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