truncate table mail_source;
truncate table mail_source;
truncate table mail;
truncate table mail_flow;
truncate table mail_approval;
truncate table mail_extension_approval;
truncate table mail_countersign;
truncate table mail_return;
truncate table mail_label;
truncate table mail_mark;
truncate table mail_appeal;

truncate table work;
truncate table favorite;
truncate table notice;

truncate table system_log_operate;
truncate table system_log_login;