离线下载
PDF版 ePub版

极客学院团队出品 · 更新于 2018-11-28 11:00:42

SQLite Order By

SQLite 的 ORDER BY 子句是用来基于一个或多个列按升序或降序顺序排列数据。

语法

ORDER BY 子句的基本语法如下:

    SELECT column-list
    FROM table_name
    [WHERE condition]
    [ORDER BY column1, column2, .. columnN] [ASC | DESC];

您可以在 ORDER BY 子句中使用多个列。确保您使用的排序列在列清单中。

实例

假设 COMPANY 表有以下记录:

    ID          NAME        AGE         ADDRESS     SALARY
    ----------  ----------  ----------  ----------  ----------
    1           Paul        32          California  20000.0
    2           Allen       25          Texas       15000.0
    3           Teddy       23          Norway      20000.0
    4           Mark        25          Rich-Mond   65000.0
    5           David       27          Texas       85000.0
    6           Kim         22          South-Hall  45000.0
    7           James       24          Houston     10000.0

下面是一个实例,它会将结果按 SALARY 降序排序:

    sqlite> SELECT * FROM COMPANY ORDER BY SALARY ASC;

这将产生以下结果:

    ID          NAME        AGE         ADDRESS     SALARY
    ----------  ----------  ----------  ----------  ----------
    7           James       24          Houston     10000.0
    2           Allen       25          Texas       15000.0
    1           Paul        32          California  20000.0
    3           Teddy       23          Norway      20000.0
    6           Kim         22          South-Hall  45000.0
    4           Mark        25          Rich-Mond   65000.0
    5           David       27          Texas       85000.0

下面是一个实例,它会将结果按 NAME 和 SALARY 降序排序:

    sqlite> SELECT * FROM COMPANY ORDER BY NAME, SALARY ASC;

这将产生以下结果:

    ID          NAME        AGE         ADDRESS     SALARY
    ----------  ----------  ----------  ----------  ----------
    2           Allen       25          Texas       15000.0
    5           David       27          Texas       85000.0
    7           James       24          Houston     10000.0
    6           Kim         22          South-Hall  45000.0
    4           Mark        25          Rich-Mond   65000.0
    1           Paul        32          California  20000.0
    3           Teddy       23          Norway      20000.0

下面是一个实例,它会将结果按 NAME 降序排序:

    sqlite> SELECT * FROM COMPANY ORDER BY NAME DESC;

这将产生以下结果:

    ID          NAME        AGE         ADDRESS     SALARY
    ----------  ----------  ----------  ----------  ----------
    3           Teddy       23          Norway      20000.0
    1           Paul        32          California  20000.0
    4           Mark        25          Rich-Mond   65000.0
    6           Kim         22          South-Hall  45000.0
    7           James       24          Houston     10000.0
    5           David       27          Texas       85000.0
    2           Allen       25          Texas       15000.0
上一篇: SQLite Limit 子... 下一篇: SQLite Group By