mysql之数据库操作-第一篇

mysql> create database if not exists myTestDB;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| mytestdb           |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.01 sec)

mysql> drop database if exists mytestdb;
Query OK, 0 rows affected (0.00 sec)

mysql> create database if not exists mytestdb;
Query OK, 1 row affected (0.00 sec)

mysql> use mytestdb;
Database changed