insert tbuseronline insert into tbuseronline(useronline_thoigiangannhat,useronline_ip,useronline_random,useronline_nhom,user_id,user_username,useronline_ngaydang) values('1534410960','54.80.87.62','2138969','0','0','','2018-08-16 16:16:00')Duplicate entry '42969' for key 'PRIMARY'