Oracle实现分页查询的SQL语法汇总

本文实例汇总了Oracle实现分页查询的SQL语法，整理给你们供你们参考之用，详情以下：

1.无ORDER BY排序的写法。(效率最高)

通过测试，此方法成本最低，只嵌套一层，速度最快！即便查询的数据量再大，也几乎不受影响，速度依然！

sql语句以下：

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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排序的写法。(效率最高)

通过测试，此方法随着查询范围的扩大，速度也会愈来愈慢！

sql语句以下：

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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.无ORDER BY排序的写法。(建议使用方法1代替)

此方法随着查询数据量的扩张，速度会愈来愈慢！

sql语句以下：

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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排序的写法.(建议使用方法2代替)

此方法随着查询范围的扩大，速度也会愈来愈慢！

sql语句以下：

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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.另类语法。(有ORDER BY写法）

该语法风格与传统的SQL语法不一样，不方便阅读与理解，为规范与统一标准，不推荐使用。此处贴出代码供你们参考之用。

sql语句以下：

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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.另类语法 。(无ORDER BY写法）

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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;

相信本文所述代码可以对你们有必定的参考借鉴价值。