jongpie

public without sharing class MultiQueryExampleBatchJob implements Database.Batchable<SObject>, Database.Stateful {
    private Schema.SObjectType currentSObjectType;
    // Add any SObject Types here if you want the batch job to query them
    private List<Schema.SObjectType> sobjectTypes = new List<Schema.SObjectType>{ Schema.Account.SObjectType, Schema.Contact.SObjectType };

    public Database.QueryLocator start(Database.BatchableContext context) {
        this.currentSObjectType = this.sobjectTypes.remove(0);
        return this.getQueryLocator();
    }