可以通过一个示例来理解，在示例中我们将一个表的值复制到另一个表中。我们正在使用表“cars”中的数据并将其数据复制到表“copy_cars” -

mysql> CREATE TABLE copy_cars LIKE cars;
Query OK, 0 rows affected (0.86 sec)

mysql> SELECT * from copy_cars;
Empty set (0.08 sec)

以下使用子查询的查询会将与“cars”相同的值插入到表“copy_cars”中 -

mysql> INSERT INTO Copy_cars Select * from Cars;
Query OK, 8 rows affected (0.07 sec)

mysql> SELECT * from copy_cars;
+------+--------------+---------+
| ID   | Name         | Price   |
+------+--------------+---------+
| 1    | Nexa         | 750000  |
| 2    | Maruti Swift | 450000  |
| 3    | BMW          | 4450000 |
| 4    | VOLVO        | 2250000 |
| 5    | Alto         | 250000  |
| 6    | Skoda        | 1250000 |
| 7    | Toyota       | 2400000 |
| 8    | Ford         | 1100000 |
+------+--------------+---------+
8 rows in set (0.00 sec)