SQLite 的 ORDER BY 子句是用來基于一個(gè)或多個(gè)列按升序或降序順序排列數(shù)據(jù)。
語法
ORDER BY 子句的基本語法如下：
SELECT column-list
FROM table_name
[WHERE condition]
[ORDER BY column1, column2, .. columnN] [ASC | DESC];
您可以在 ORDER BY 子句中使用多個(gè)列。確保您使用的排序列在列清單中。
實(shí)例
假設(shè) COMPANY 表有以下記錄：
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
下面是一個(gè)實(shí)例，它會(huì)將結(jié)果按 SALARY 升序排序：
sqlite> SELECT * FROM COMPANY ORDER BY SALARY ASC;
這將產(chǎn)生以下結(jié)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
下面是一個(gè)實(shí)例，它會(huì)將結(jié)果按 NAME 和 SALARY 升序排序：
sqlite> SELECT * FROM COMPANY ORDER BY NAME, SALARY ASC;
這將產(chǎn)生以下結(jié)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
下面是一個(gè)實(shí)例，它會(huì)將結(jié)果按 NAME 降序排序：
sqlite> SELECT * FROM COMPANY ORDER BY NAME DESC;
這將產(chǎn)生以下結(jié)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