delsql<<"DELETE FROM session_data WHERE sessionid='"<<delsql.escaped(sbuf,sessionid.c_str())<<"' AND "<<dbpp::quoteIdentifier(_sessiondb,"key")<<"='"<<delsql.escaped(sbuf,key)<<"';";
_sessiondb.exec(delsql,res);
dbpp::SQLsql;
sql<<"INSERT INTO session_data (sessionid,"<<dbpp::quoteIdentifier(_sessiondb,"key")<<",value) VALUES ('"<<sql.escaped(sbuf,sessionid.c_str())<<"','"<<sql.escaped(sbuf,key)<<"','"<<sql.escaped(sbuf,value)<<"');";