MySQL 是否可以在向MySQL插入数据时跳过某些列?
如果您的第一列是AUTO_INCREMENT,则可以跳过该列并将值设置为NULL。让我们首先创建一个表 –
mysql> create table DemoTable
(
StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
StudentFirstName varchar(100),
StudentAge int
);
Query OK, 0 rows affected (0.60 sec)
使用插入命令将一些记录插入表中。这里,我们跳过了第一列,因为它是AUTO_INCREMENT –
mysql> insert into DemoTable values(NULL,'Robert',21);
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable values(NULL,'Sam',22);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values(NULL,'Bob',24);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values(NULL,'Carol',20);
Query OK, 1 row affected (0.14 sec)
使用SELECT语句显示表中的所有记录 –
mysql> select * from DemoTable;
这将生成以下输出 –
+-----------+------------------+------------+
| StudentId | StudentFirstName | StudentAge |
+-----------+------------------+------------+
| 1 | Robert | 21 |
| 2 | Sam | 22 |
| 3 | Bob | 24 |
| 4 | Carol | 20 |
+-----------+------------------+------------+
4 rows in set (0.00 sec)
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