SQL insert into语句 数据插入

SQL INSERT INTO 语句

INSERT INTO 语句用于向表中插入新记录。

SQL INSERT INTO 语法
INSERT INTO 语句可以有两种编写形式。

第一种形式无需指定要插入数据的列名，只需提供被插入的值即可：

INSERT INTO table_name
VALUES (value1,value2,value3,...);

第二种形式需要指定列名及被插入的值：

INSERT INTO table_name (column1,column2,column3,...)
VALUES (value1,value2,value3,...);

实例

实例表

+----+--------------+---------------------------+-------+---------+
| id | name         | url                       | alexa | country |
+----+--------------+---------------------------+-------+---------+
| 1  | Google       | https://www.google.cm/    | 1     | USA     |
| 2  | 淘宝          | https://www.taobao.com/   | 13    | CN      |
| 3  | Facebook     | https://www.facebook.com/ | 3     | USA     |
+----+--------------+---------------------------+-------+---------+

插入一条数据

INSERT INTO Websites (name, url, alexa, country)
VALUES ('百度','https://www.baidu.com/','4','CN');

结果：

+----+--------------+---------------------------+-------+---------+
| id | name         | url                       | alexa | country |
+----+--------------+---------------------------+-------+---------+
| 1  | Google       | https://www.google.cm/    | 1     | USA     |
| 2  | 淘宝          | https://www.taobao.com/   | 13    | CN      |
| 3  | Facebook     | https://www.facebook.com/ | 3     | USA     |
| 4  | 百度     | https://www.baidu.com/ | 4     | CN     |
+----+--------------+---------------------------+-------+---------+

指定列插入数据

只在 "name"、"url" 和 "country" 列插入数据（id 字段会自动更新）：

实例

INSERT INTO Websites (name, url, country)
VALUES ('stackoverflow', 'http://stackoverflow.com/', 'IND');

结果：

+----+--------------+---------------------------+-------+---------+
| id | name         | url                       | alexa | country |
+----+--------------+---------------------------+-------+---------+
| 1  | Google       | https://www.google.cm/    | 1     | USA     |
| 2  | 淘宝          | https://www.taobao.com/   | 13    | CN      |
| 3  | Facebook     | https://www.facebook.com/ | 3     | USA     |
| 4  | 百度     | https://www.baidu.com/ | 4     | CN     |
| 5  |  stackoverflow    | https://stackoverflow.com/ | 0     | IND     |
+----+--------------+---------------------------+-------+---------+