Hi,
     I am trying to copy all cities from Student custom object in Address1 custom object into City__c field.all code working properly and code coverage also 100%
but the problem is that after running program cities not copied in Address table and i also trying to check program execution using System.Debug(''); but the statement not printed after executon in log my Code is here


global class CopyStudtoAdr_Batch implements Database.Batchable<sObject>
{
global Database.QueryLocator start(Database.BatchableContext BC)
{
     String query='SELECT ID,City__c FROM Student__c';
     return Database.getQueryLocator(query);
   }
    global void execute(Database.BatchableContext BC, List<Student__c> scope)
    {
      System.debug('Batch Class Started....');
      //List<Address1__c> adrToUpdate = [Select id,StudentID__c,City__c from Address1__c where StudentID__c in : scope] ;
      //Set<String> setSturdentIds = new Set<String>();
      List<Address1__c> adrToUpdate = [Select Id,StudentID__c,City__c from Address1__c where StudentID__c in : Scope];

     Map<ID,Student__c> stdMap = new Map<ID,Student__c>(scope) ;
      
       // Loop to copy account Student to Address phone
       for(Address1__c adr : adrToUpdate)
        {
         adr.City__c =  stdMap.get(adr.StudentID__c).City__c ;
         }
       if(adrToUpdate.size() > 0)
       update adrToUpdate;
      }
     global void finish(Database.BatchableContext ctx)
      {}
}

Please check it and tell me Solution

Thanks,
Sam