这只会复制结构:
mysql> create table a like mysql1;
Query OK, 0 rows affected (0.03 sec)
mysql> desc a;
+----------+----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+----------+------+-----+---------+-------+
| user | char(80) | NO | | | |
| host | char(60) | NO | | | |
| password | char(41) | NO | | | |
+----------+----------+------+-----+---------+-------+
3 rows in set (0.00 sec)
mysql> select * from a;
Empty set (0.00 sec)
mysql>
这除了复制结构， 还会复制结果集：
mysql> create table t8 select user,host from mysql.user;
Query OK, 1 row affected (0.03 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql> desc t8;
+-------+----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+----------+------+-----+---------+-------+
| user | char(80) | NO | | | |
| host | char(60) | NO | | | |
+-------+----------+------+-----+---------+-------+
2 rows in set (0.01 sec)
mysql> select * from t8;
+------+-----------+
| user | host |
+------+-----------+
| root | localhost |
+------+-----------+
1 row in set (0.00 sec)
mysql>
用法例子：
#创一个一样的表
create table a_back like mysql.user;
#导入另一个表中的所有数据
insert into a_back select * from mysql.user;