global Database.QueryLocator start(Database.BatchableContext bc){

return Database.getQueryLocator(SELECT id,Email,name,MailingCountry,active__C,Flag__c,Chrun_Indicator__c,Sales_Program_Type__c FROM contact where AccountId!= null and account.Active__c='yes' and ( Account.Type  like 'Customer%') and Active__c='Yes' and Email!= null and  (NOT Email  like '%cexz.com'));

    }