查询数据库信息mysqlshow、show databases
[root@vm1 ~]# mysqlshow -uroot -p
Enter password:
+--------------------+
| Databases |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
mysql> select db ,user,host from db;
+-----+-----------+-----------+
| db | user | host |
+-----+-----------+-----------+
| sys | mysql.sys | localhost |
+-----+-----------+-----------+
1 row in set (0.00 sec)
显示当前所在数据库：
mysql> select database();
+------------+
| database() |
+------------+
| mysql |
+------------+
1 row in set (0.00 sec)
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