Oracle實現分頁查詢的SQL文法匯總_oracle

本文執行個體匯總了Oracle實現分頁查詢的SQL文法，整理給大家供大家參考之用，詳情如下：

1.無ORDER BY排序的寫法。(效率最高)

經過測試，此方法成本最低，只嵌套一層，速度最快！即使查詢的資料量再大，也幾乎不受影響，速度依然！

sql語句如下：

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

2.有ORDER BY排序的寫法。(效率最高)

經過測試，此方法隨著查詢範圍的擴大，速度也會越來越慢！

sql語句如下：

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_ALIASwhere TABLE_ALIAS.rowno >= 10;

3.無ORDER BY排序的寫法。(建議使用方法1代替)

此方法隨著查詢資料量的擴張，速度會越來越慢！

sql語句如下：

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_ALIASWHERE 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)

此方法隨著查詢範圍的擴大，速度也會越來越慢！

sql語句如下：

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_ALIASwhere TABLE_ALIAS.rowno BETWEEN 10 AND 20;

5.另類文法。(有ORDER BY寫法）

該文法風格與傳統的SQL文法不同，不方便閱讀與理解，為規範與統一標準，不推薦使用。此處貼出代碼供大家參考之用。

sql語句如下：

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.另類文法 。(無ORDER BY寫法）

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對大家有一定的參考借鑒價值。