sqlite(5)-select语句

语法##

SELECT column1, column2, columnN FROM table_name;
SELECT * FROM table_name;

实例##

假设数据

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

格式化显示##

sqlite>.header on
sqlite>.mode column
sqlite> SELECT * FROM COMPANY;

输入语句

SELECT ID, NAME, SALARY FROM COMPANY;

上面查询会产生以下结果:

|ID NAME | SALARY
|:----------| :---------- |:----------|
|1 | Paul | 20000.0|
|2 | Allen | 15000.0|
|3 | Teddy | 20000.0|
|4 | Mark | 65000.0|
|5 | David | 85000.0|
|6 | Kim |45000.0|
|7 | James | 10000.0|

设置输出列的宽度##

sqlite>.width 10, 20, 10
sqlite>SELECT * FROM COMPANY;

.width 第一列10, 第二列20, 第三列10, 以下结果

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