我们知道，在SQL Server数据库中查询数据时需要用到SELECT……FROM语句结合WHERE条件来实现的，其实SQLite数据库查询数据的方式也是这样的，本文通过一个实例来介绍这一过程，希望能给大家带来收获。
首先将下面的SQL 语句保存到 data.sql 文件中（为了以后的练习使用）：
BEGIN TRANSACTION;
CREATE TABLE Cars(Id integer PRIMARY KEY, Name text, Cost integer);
INSERT INTO Cars VALUES(1,'Audi',52642);
INSERT INTO Cars VALUES(2,'Mercedes',57127);
INSERT INTO Cars VALUES(3,'Skoda',9000);
INSERT INTO Cars VALUES(4,'Volvo',29000);
INSERT INTO Cars VALUES(5,'Bentley',350000);
INSERT INTO Cars VALUES(6,'Citroen',21000);
INSERT INTO Cars VALUES(7,'Hummer',41400);
INSERT INTO Cars VALUES(8,'Volkswagen',21600);
COMMIT;
BEGIN TRANSACTION;
CREATE TABLE Orders(Id integer PRIMARY KEY, OrderPrice integer CHECK(OrderPrice>0),
Customer text);
INSERT INTO Orders(OrderPrice, Customer) VALUES(1200, "Williamson");
INSERT INTO Orders(OrderPrice, Customer) VALUES(200, "Robertson");
INSERT INTO Orders(OrderPrice, Customer) VALUES(40, "Robertson");
INSERT INTO Orders(OrderPrice, Customer) VALUES(1640, "Smith");
INSERT INTO Orders(OrderPrice, Customer) VALUES(100, "Robertson");
INSERT INTO Orders(OrderPrice, Customer) VALUES(50, "Williamson");
INSERT INTO Orders(OrderPrice, Customer) VALUES(150, "Smith");
INSERT INTO Orders(OrderPrice, Customer) VALUES(250, "Smith");
INSERT INTO Orders(OrderPrice, Customer) VALUES(840, "Brown");
INSERT INTO Orders(OrderPrice, Customer) VALUES(440, "Black");
INSERT INTO Orders(OrderPrice, Customer) VALUES(20, "Brown");
COMMIT;
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然后在在终端执行命令 .read data.sql，将数据导入到数据库中：
sqlite>
sqlite> .tables
Friends
sqlite> .read data.sql
sqlite> .tables
Cars Orders Teachers
sqlite>
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可以看到，Cars 表和 Orders 表已经导入到数据库中，现在可以查询了：
sqlite>
sqlite> SELECT * FROM Cars;
Id Name Cost
---- --------------- ---------------
1 Audi 52642
2 Mercedes 57127
3 Skoda 9000
4 Volvo 29000
5 Bentley 350000
6 Citroen 21000
7 Hummer 41400
8 Volkswagen 21600
sqlite> SELECT * FROM Orders;
Id OrderPrice Customer
---- --------------- ---------------
1 1200 Williamson
2 200 Robertson
3 40 Robertson
4 1640 Smith
5 100 Robertson
6 50 Williamson
7 150 Smith
8 250 Smith
9 840 Brown
10 440 Black
11 20 Brown
sqlite>
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关于SQLite数据库查找数据的知识就介绍到这里，我们还会在以后的文章里继续介绍，谢谢各位一直以来的支持！
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