"FROM typeofcall "; "ORDER BY typeofcall DESC "; $result1 = mysql_query($query1) or die(mysql_error()); while($row1 = mysql_fetch_array($result1)) { //Nested Query 2 According to First Query $query2 = "SELECT typeofcall .typeofcallE, report2.CALLSACCEPTED, report2.CallAnswer...
It is important to understand that a joinis not a physical entityin other words, it does not exist in the actual database tables. A join is created by MySQL as needed, andit persists for the duration of the query execution. - maintainingreferential integrity 是说 MySQL 只允许合法的数据(fo...