Php SQL语句中的多个介于和限制运算符

我正在尝试获取两行的结果集

这两行是在between运算符中指定的时间跨度之间找到的最后一行

我怎样才能达到这个结果

下面的代码不起作用

SELECT 
DaySum_1+DaySum_2+DaySum_3+DaySum_4+DaySum_5
AS october
FROM   solarenergy
WHERE ((DatumUhrzeit BETWEEN '2014-10-01 01:00:00' AND '2014-10-01 23:00:00') LIMIT 1)
   OR ((DatumUhrzeit BETWEEN '2014-10-02 01:00:00' AND '2014-10-02 23:00:00') LIMIT 1)
ORDER BY DatumUhrzeit DESC

---

您需要执行一个

联合

，才能应用两个独立的

限制

，因为每个查询只能使用一个。要使用单个

限制

子句，每个

联合

组件必须包装在

（）

如果要保证由

联合产生的两行订单

，则必须在末尾的

（）

组之外应用

(
  SELECT 
  DaySum_1+DaySum_2+DaySum_3+DaySum_4+DaySum_5 AS october
  FROM solarenergy
  WHERE DatumUhrzeit BETWEEN '2014-10-01 01:00:00' AND '2014-10-01 23:00:00'
  ORDER BY DatumUhrzeit DESC
  LIMIT 1
) UNION (
  SELECT 
  DaySum_1+DaySum_2+DaySum_3+DaySum_4+DaySum_5 AS october
  FROM solarenergy
  WHERE DatumUhrzeit BETWEEN '2014-10-02 01:00:00' AND '2014-10-02 23:00:00'
  ORDER BY DatumUhrzeit DESC
  LIMIT 1
)
/* Global ORDER BY after UNION */
ORDER BY october ASC

(
  SELECT 
  DaySum_1+DaySum_2+DaySum_3+DaySum_4+DaySum_5 AS october
  FROM solarenergy
  WHERE DatumUhrzeit BETWEEN '2014-10-01 01:00:00' AND '2014-10-01 23:00:00'
  ORDER BY DatumUhrzeit DESC
  LIMIT 1
) UNION (
  SELECT 
  DaySum_1+DaySum_2+DaySum_3+DaySum_4+DaySum_5 AS october
  FROM solarenergy
  WHERE DatumUhrzeit BETWEEN '2014-10-02 01:00:00' AND '2014-10-02 23:00:00'
  ORDER BY DatumUhrzeit DESC
  LIMIT 1
)
/* Global ORDER BY after UNION */
ORDER BY october ASC