code: public ZealotKhala andLessThan(String field, Object value) {
          return this.doNormal(ZealotConst.AND_PREFIX, field, value, ZealotConst.LT_SUFFIX, true);
      }
docs: 生成带" AND "前缀小于查询的SQL片段.
  @param field 数据库字段
  @param value 值
  @return ZealotKhala实例