mysql> show variables like"%char%";
SET character_set_client='utf8';
SET character_set_connection='utf8';
SET character_set_results='utf8';
SET character_set_server='utf8';
mysql> show variables like"%char%";
SET character_set_client='utf8';
SET character_set_connection='utf8';
SET character_set_results='utf8';
SET character_set_server='utf8';