from:http://blog.csdn.net/dubiousway/article/details/7075708
实验一
1。首先，在下面情况下：
mysql> show variables like ‘character_set_%’;
+————————–+—————————————+
| Variable_name | Value |
+————————–+—————————————+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | D:\Programs\mysql5045\share\charsets\ |
+————————–+—————————————+
建表，并加入3个记录：大，阿，爱