Ich habe den folgenden Code geschrieben, um einen Gesamtbetrag zu erhalten, aber es wird ein Fehler zurückgegeben.
Code
TotalCharges__c = [SELECT sum(EntryCharge__c) FROM AllocationTable__c WHERE id=:id];
TotalCharges__c: currency
EntryCharge__c: expression (currency)
Error
Save error: Illegal assignment from LIST<AggregateResult> to Decimal CalculateCharge.trigger
Verwenden Sie für eine Aggregationsfunktion den Typ "AggregateResult". Außerdem muss die valueof-Methode für jeden Typ verwendet werden, um den Typ zu konvertieren, da die Aggregationsergebnisdaten nicht direkt in einer Variablen vom Typ "Decimal" gespeichert werden können.
Einzelheiten finden Sie im folgenden Beispiel:
*******************************
AggregateResult ar = [SELECT sum(EntryCharge__c) s FROM AllocationTable__c WHERE id=:id];
TotalCharges__c = decimal.Valueof(string.valueof(ar.get('s')));
system.debug('data = '+String.valueof(j.TotalCharges__c));
*******************************
Informationen zum Konvertieren des Typs "String" finden Sie in diesem Thema.
000385401

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