[sql]代码库
[root@dogood pycode]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.1.66-log MySQL Community Server (GPL)
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;   #显示有什么数据库
+--------------------+
| Database           |
+--------------------+
| information_schema |
| crashcourse        |
| mysql              |
| test               |
+--------------------+
4 rows in set (0.07 sec)
mysql> use crashcourse;   #使用哪个数据库
Database changed
mysql> SELECT vend_id FROM products;         
+---------+
| vend_id |
+---------+
|    1001 |
|    1001 |
|    1001 |
|    1002 |
|    1002 |
|    1003 |
|    1003 |
|    1003 |
|    1003 |
|    1003 |
|    1003 |
|    1003 |
|    1005 |
|    1005 |
+---------+
14 rows in set (0.00 sec)
mysql>