Php 将两个不同的查询合并为一个查询

我有2个查询，我想合并成1个。但是，我得到了一个错误：

//first query: SELECT @rownum := @rownum +1 `index` , t. * FROM ipAll t, ( SELECT @rownum :=0 ) r //second query: SELECT DISTINCT COUNT( ip ) , SUM( views ) , DATE FROM ipAll WHERE date LIKE '%-12-%' GROUP BY DATE ORDER BY DATE ASC LIMIT 31 // combined query: (Totally wrong. How do I fix this?) SELECT @rownum := @rownum +1 `index` , DISTINCT COUNT( ip ) , SUM( views ) , DATE FROM ipAll t, ( SELECT @rownum :=0 ) r WHERE date LIKE '%-12-%' GROUP BY DATE ORDER BY DATE ASC LIMIT 31 我建议把它去掉

假设您的表包含以下内容：

|                         dt |      ip | views |
|----------------------------|---------|-------|
| December, 01 2015 00:00:00 | 1.1.1.1 |   100 |
| December, 01 2015 00:00:00 | 2.2.2.2 |    10 |
| December, 02 2015 00:00:00 | 3.3.3.3 |     4 |
| December, 01 2014 00:00:00 | 1.1.1.1 |   100 |
| November, 01 2015 00:00:00 | 1.1.1.1 |     1 |
| November, 01 2015 00:00:00 | 2.2.2.2 |     2 |

查询：

SELECT 
@rownum := @rownum +1 `index`,
COUNT( ip ), SUM( views ) , dt 
FROM ipAll,  ( SELECT @rownum :=0 ) r 
WHERE dt LIKE '%-12-%' 
GROUP BY dt 
ORDER BY dt ASC 
LIMIT 31;

将导致：

| index | COUNT( ip ) | SUM( views ) |                         dt |
|-------|-------------|--------------|----------------------------|
|     3 |           1 |          100 | December, 01 2014 00:00:00 |
|     1 |           2 |          110 | December, 01 2015 00:00:00 |
|     2 |           1 |            4 | December, 02 2015 00:00:00 |

获得类似但不完全相同结果的另一种方法是：

select @rownum := @rownum +1 `index`, main.*
from ( SELECT @rownum :=0 ) r, (
  SELECT COUNT( ip ), SUM( views ) , dt 
  FROM ipAll
  WHERE dt LIKE '%-12-%' 
  GROUP BY dt 
  LIMIT 31
) main
ORDER BY dt ASC

其结果将是：

| index | COUNT( ip ) | SUM( views ) |                         dt |
|-------|-------------|--------------|----------------------------|
|     1 |           1 |          100 | December, 01 2014 00:00:00 |
|     2 |           2 |          110 | December, 01 2015 00:00:00 |
|     3 |           1 |            4 | December, 02 2015 00:00:00 |

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SQLFIDLE示例：

您所说的联合收割机是什么意思？你能举例说明这两个查询的结果吗？您希望这些结果如何合并？在MySQL中，有一个UNION语句，它将合并多个查询的结果。但是，结果需要有相同的列。非常好。在我意识到它是日期的缩写之前，有一秒钟我把它和名为dt的专栏搞混了。