insert tbuseronline insert into tbuseronline(useronline_thoigiangannhat,useronline_ip,useronline_random,useronline_nhom,user_id,user_username,useronline_ngaydang) values('1505938088','54.80.26.116','2849541','0','0','','2017-09-21 03:08:08')Duplicate entry '235604' for key 'PRIMARY'