sql 查出的数字转string
SELECT form_data_id_str, form_content_id from (SELECT cast(form_data_id AS varchar) AS form_data_id_str, form_content_id, evict_status FROM cc.FORM_CO
SELECT form_data_id_str, form_content_id from (SELECT cast(form_data_id AS varchar) AS form_data_id_str, form_content_id, evict_status FROM cc.FORM_CO