Oracle 数据库分页查询与排序分页查询

一、分页查询

原始查询语句

SELECT * FROM NASLE_WFSHH

修改为分页查询语句，加上 ROWNUM 列。此处为查询第 1 页，每页 9 条数据

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

二、排序分页查询

原始排序查询语句

SELECT * FROM NASLE_WFSHH ORDER BY WFSJ DESC

排序分页查询语句，分两步

1.添加 ROWNUM 列，不能在查询时添加，它会先生成 ROWNUM 列，再按照字段排序

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

2.排序分页查询语句

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