MySQL允许将一个或多个元组插入已存在的table中。
格式：INSERT INTO 表名 (属性名1,属性名2,属性名3) VALUES (value1,value2,value3);
INSERT INTO 表名 (属性名1,属性名2,属性名3) VALUES (value-a1,value-a2,value-a3),(value-b1,value-b2,value-b3);
说明：若value数值是字符型，则需要加上双引号""
1.逐个元组插入
1）首先创建一个TABLE
mysql> use test Database changed mysql> create table courses -> (num int AUTO_INCREMENT PRIMARY KEY, -> name char(20) NOT NULL, -> submission_date char(10) -> )ENGINE=InnoDB DEFAULT CHARSET=utf8; Query OK, 0 rows affected (0.07 sec)
2）然后插入元组
mysql> insert into courses (name,submission_date) values("数学",NOW()); Query OK, 1 row affected, 1 warning (0.01 sec) mysql> insert into courses (name,submission_date) values("语文",NOW()); Query OK, 1 row affected, 1 warning (0.03 sec) mysql> insert into courses (name,submission_date) values("英语",NOW()); Query OK, 1 row affected, 1 warning (0.06 sec) mysql> insert into courses (name,submission_date) values("化学",NOW()); Query OK, 1 row affected, 1 warning (0.03 sec) mysql> insert into courses (name,submission_date) values("历史",NOW()); Query OK, 1 row affected, 1 warning (0.01 sec)
其中，属性num的值没有设置，因为它的值是自动递增的。
3）元组查看
mysql> select * from courses;
+-----+--------+-----------------+
| num | name | submission_date |
+-----+--------+-----------------+
| 1 | 数学 | 2018-01-30 |
| 2 | 语文 | 2018-01-30 |
| 3 | 英语 | 2018-01-30 |
| 4 | 化学 | 2018-01-30 |
| 5 | 历史 | 2018-01-30 |
+-----+--------+-----------------+
5 rows in set (0.00 sec)
2.多个元组插入
mysql> insert into courses (name,submission_date) values("生物",NOW()),
-> ("政治",NOW()),("体育",NOW());
Query OK, 3 rows affected, 3 warnings (0.03 sec)
Records: 3 Duplicates: 0 Warnings: 3
mysql> select * from courses;
+-----+--------+-----------------+
| num | name | submission_date |
+-----+--------+-----------------+
| 1 | 数学 | 2018-01-30 |
| 2 | 语文 | 2018-01-30 |
| 3 | 英语 | 2018-01-30 |
| 4 | 化学 | 2018-01-30 |
| 5 | 历史 | 2018-01-30 |
| 6 | 生物 | 2018-01-30 |
| 7 | 政治 | 2018-01-30 |
| 8 | 体育 | 2018-01-30 |
+-----+--------+-----------------+
8 rows in set (0.00 sec)
