Oracle 數據庫分頁查詢與排序分頁查詢

一、分頁查詢

原始查詢語句

SELECT * FROM NASLE_WFSHH

修改為分頁查詢語句，加上 ROWNUM 列。此處為查詢第 1 頁，每頁 9 條數據

SELECT
    * 
FROM
    ( SELECT ROWNUM rn, a.* FROM NASLE_WFSHH a ) 
WHERE
    rn BETWEEN 9 * 0 + 1 AND 9 * 1

 

二、排序分頁查詢

原始排序查詢語句

SELECT * FROM NASLE_WFSHH ORDER BY WFSJ DESC

排序分頁查詢語句，分兩步

1.添加 ROWNUM 列，不能在查詢時添加，它會先生成 ROWNUM 列，再按照字段排序

SELECT
    ROWNUM rn, temp.*
FROM
    ( SELECT * FROM NASLE_WFSHH ORDER BY WFSJ DESC ) temp

2.排序分頁查詢語句

SELECT
    * 
FROM
    ( 
        SELECT
            ROWNUM rn, temp.*
        FROM
            ( SELECT * FROM NASLE_WFSHH ORDER BY WFSJ DESC ) temp
    ) 
WHERE
    rn BETWEEN 9 * 0 + 1 AND 9 * 1