Oracle實現分頁查詢的SQL語法彙總

本文實例彙總了Oracle實現分頁查詢的SQL語法，整理給你們供你們參考之用，詳情以下：

1.無ORDER BY排序的寫法。(效率最高)

通過測試，此方法成本最低，只嵌套一層，速度最快！即便查詢的數據量再大，也幾乎不受影響，速度依然！

sql語句以下：

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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排序的寫法。(效率最高)

通過測試，此方法隨着查詢範圍的擴大，速度也會愈來愈慢！

sql語句以下：

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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ORDER BY排序的寫法。(建議使用方法1代替)

此方法隨着查詢數據量的擴張，速度會愈來愈慢！

sql語句以下：

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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排序的寫法.(建議使用方法2代替)

此方法隨着查詢範圍的擴大，速度也會愈來愈慢！

sql語句以下：

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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.另類語法。(有ORDER BY寫法）

該語法風格與傳統的SQL語法不一樣，不方便閱讀與理解，爲規範與統一標準，不推薦使用。此處貼出代碼供你們參考之用。

sql語句以下：

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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.另類語法 。(無ORDER BY寫法）

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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;

相信本文所述代碼可以對你們有必定的參考借鑑價值。