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SQLite ORDER BY
SQLite 的 ORDER BY 语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];
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。
示例
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
下面示例会将结果按 SALARY 升序排序：
sqlite> SELECT * FROM COMPANY ORDER BY SALARY ASC;
结果如下：
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
下面示例将结果按 NAME 和 SALARY 升序排序：
sqlite> SELECT * FROM COMPANY ORDER BY NAME, SALARY ASC;
结果如下：
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
下面示例，它会将结果按 NAME 降序排序：
sqlite> SELECT * FROM COMPANY ORDER BY NAME DESC;
结果如下：
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
