insert tbuseronline insert into tbuseronline(useronline_thoigiangannhat,useronline_ip,useronline_random,useronline_nhom,user_id,user_username,useronline_ngaydang) values('1534410952','54.80.87.62','1926377','0','0','','2018-08-16 16:15:52')Duplicate entry '42969' for key 'PRIMARY'