std::time_t t = std::stof(time);
std::stringstream sstime;
sstime << std::put_time(std::gmtime(&t), "%F") << 'n';
Poco::Data::Statement sql_insert(*session);
sql_insert << "INSERT into history (uid,  time)
               VALUES (?,?)",
               Poco::Data::Keywords::bind(uid),

               Poco::Data::Keywords::bind(sstime.str());