选择一个数据库
mysql> use test;
Database changed
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| first |
+----------------+
1 row in set (0.00 sec)
退出当前数据库进入另一个数据库
mysql> use test;
Database changed
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| first |
+----------------+
1 row in set (0.00 sec)
mysql> use myemployees;
Database changed
mysql> show tables;
+-----------------------+
| Tables_in_myemployees |
+-----------------------+
| departments |
| employees |
| jobs |
| locations |
+-----------------------+
4 rows in set (0.00 sec)