insert tbuseronline insert into tbuseronline(useronline_thoigiangannhat,useronline_ip,useronline_random,useronline_nhom,user_id,user_username,useronline_ngaydang) values('1506216381','54.159.64.172','6987764','0','0','','2017-09-24 08:26:21')Duplicate entry '235604' for key 'PRIMARY'