怎么写都不行呢？

Date createTime = dbTools.getDao().execute(Sqls.fetchTimestamp("SELECT create_time FROM biz_terminal_info $condition").setCondition(Cnd.where("terminal_no", "=", "homer 1507000014").andNot("createTime","=",null))).getObject(Date.class);
        System.out.println(createTime);

Date createTime = dbTools.getDao().execute(Sqls.fetchTimestamp("SELECT create_time FROM biz_terminal_info $condition").setCondition(Cnd.where("terminal_no", "=", "homer 1507000014").and("createTime", "is not", null))).getObject(Date.class);