SQLite–ORDER子句

SQLite &＃8211; ORDER BY子句

The SQLite ORDER BY子句用于数据按升序或降序排序,基于一个或多个列。

语法：

ORDER BY子句的基本语法如下:

SELECT column&＃8211;list

FROM table_name

[WHERE condition]

[ORDER BY column1, column2, .. columnN] [ASC | DESC];

您可以使用多个列在ORDER BY子句。确保使用的任何列,该列应该在column-list可用。

例子：

COMPANY table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

下面是一个例子,工资将按降序排序结果:

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

下面是一个例子,这将在降序排序结果的姓名和工资:

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

下面是一个例子,这将在降序排序结果名称:

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