public void TransferStudies()
        {
            string sql_string = @"INSERT INTO ad.studies (sd_sid, display_title,
            title_lang_code, brief_description, data_sharing_statement,
            study_start_year, study_start_month, study_type_id, 
            study_status_id, study_enrolment, study_gender_elig_id, min_age, 
            min_age_units_id, max_age, max_age_units_id, datetime_of_data_fetch,
            record_hash, study_full_hash)
            SELECT s.sd_sid, display_title,
            title_lang_code, brief_description, data_sharing_statement,
            study_start_year, study_start_month, study_type_id, 
            study_status_id, study_enrolment, study_gender_elig_id, min_age, 
            min_age_units_id, max_age, max_age_units_id, datetime_of_data_fetch,
            record_hash, study_full_hash 
            FROM sd.studies s
            INNER JOIN sd.to_ad_study_recs ts
            ON s.sd_sid = ts.sd_sid
            where ts.status = 1";

            dbu.ExecuteTransferSQL(sql_string, "studies", "Adding");
        }
        public void TransferDataObjects()
        {
            string sql_string = @"INSERT INTO ad.data_objects(sd_oid, sd_sid, 
            display_title, version, doi, doi_status_id, publication_year,
            object_class_id, object_type_id, managing_org_id, managing_org, lang_code, access_type_id,
            access_details, access_details_url, url_last_checked, eosc_category, add_study_contribs,
            add_study_topics, datetime_of_data_fetch, record_hash, object_full_hash)
            SELECT s.sd_oid, s.sd_sid, 
            display_title, version, doi, doi_status_id, publication_year,
            object_class_id, object_type_id, managing_org_id, managing_org, lang_code, access_type_id,
            access_details, access_details_url, url_last_checked, eosc_category, add_study_contribs,
            add_study_topics, datetime_of_data_fetch, record_hash, object_full_hash
            FROM sd.data_objects s
            INNER JOIN sd.to_ad_object_recs nd
            ON s.sd_oid = nd.sd_oid
            WHERE nd.status = 1";

            dbu.ExecuteTransferSQL(sql_string, "data_objects", "Adding");
        }