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SQLite Order BySQLite 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 升序排序: 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 升序排序: 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 |
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