MySQL 使用 AUTO_INCREMENT 将 INSERT INTO SELECT 插入到表中
mysqlmysqli database
让我们创建一个表 −
mysql> create table DemoTable1923 ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserName varchar(20) ); Query OK, 0 rows affected (0.00 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable1923(UserId,UserName) select 101 as UserId,'Chris' as UserName; Query OK, 1 row affected (0.00 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> insert into DemoTable1923(UserId,UserName) select 102 as UserId,'Robert' as UserName; Query OK, 1 row affected (0.00 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> insert into DemoTable1923(UserId,UserName) select 103 as UserId,'Sam' as UserName; Query OK, 1 row affected (0.00 sec) Records: 1 Duplicates: 0 Warnings: 0
使用 select 语句显示表中的所有记录 −
mysql> select * from DemoTable1923;
这将产生以下输出 −
+--------+----------+ | UserId | UserName | +--------+----------+ | 101 | Chris | | 102 | Robert | | 103 | Sam | +--------+----------+ 3 rows in set (0.00 sec)
