RivalHostsProportion_first__c false IF( !ISNULL(RivalHostsNumber_first__c) && !ISNULL(AllHostsNumber_first__c) && AllHostsNumber_first__c > 0, ( RivalHostsNumber_first__c / AllHostsNumber_first__c ), null ) 对手主机占比（期初） 18 false 2 false Percent