sql 基础--mysql 5 （9）

mysql> insert into pw_price values (5,5000,‘cai‘);
Query OK, 1 row affected (0.03 sec)

mysql> select * from pw_price;+-----+-------+------------+
| uid | price | first_name |
+-----+-------+------------+
|   1 |   100 | wang       |
|   2 |  1000 | zhang      |
|   3 |  2000 | li         |
|   4 |  5000 | weizhi     |
|   5 |  5000 | cai        |
+-----+-------+------------+
5 rows in set (0.00 sec)

mysql> insert into pw_price(uid,first_name) values (6,‘guo‘);
Query OK, 1 row affected (0.03 sec)

mysql> select * from pw_price;+-----+-------+------------+
| uid | price | first_name |
+-----+-------+------------+
|   1 |   100 | wang       |
|   2 |  1000 | zhang      |
|   3 |  2000 | li         |
|   4 |  5000 | weizhi     |
|   5 |  5000 | cai        |
|   6 |  NULL | guo        |
+-----+-------+------------+
6 rows in set (0.00 sec)

mysql>  insert into pw_price(uid,first_name) select uid,first_name from pw_price;