To see your current database in MySQL:

mysql> SELECT DATABASE();
 +------------+
 | DATABASE() |
 +------------+
 | my_data    |
 +------------+
 1 row in set (0.00 sec)

As shown above my current database is my_data. I usually forgot what db I'm currently on, when I use tmux and my session has been kept open for weeks. That's why! :)

#mysql #database #current_database #current_db