在phpmyadmin和SQL Fiddle上执行时，同一SELECT查询的结果不同

Question

我写了一个查询来获取MySQL表中所有国家的最新税款 。 在phpmyadmin（localhost）和SQL Fiddle中执行的相同查询。 两种结果是不同的。 但是SQL Fiddle产生了正确的结果。

我可以找到相同的问题早在此链接上已发布到堆栈溢出

我没有得到任何帮助。 我的问题是如何在phpmyadmin（localhost）上为我在下面编写的SELECT查询获得正确的结果； 我的SELECT查询有问题吗？

选择查询：（我同时在Phpmyadmin和SQL Fiddle上执行）

SELECT 
  t1.id, t1.country, 
  t1.tax, t1.created_by, 
  t1.created_on, t1.modified_by, t1.modified_on 
FROM tax t1 
INNER JOIN 
(
   SELECT country, MAX(created_on) AS latest 
   FROM tax GROUP BY country
) t4 ON t1.created_on=t4.latest AND t1.country=t4.country;

表

+-------------+--------------+------+-----+-------------------+-----------------
------------+

| Field       | Type         | Null | Key | Default           | Extra
            |

+-------------+--------------+------+-----+-------------------+-----------------
------------+

| id          | int(11)      | NO   | PRI | NULL              | auto_increment
            |

| country     | int(11)      | NO   |     | NULL              |
            |

| tax         | decimal(8,5) | NO   |     | NULL              |
            |

| created_by  | int(11)      | NO   |     | NULL              |
            |

| created_on  | timestamp    | NO   |     | CURRENT_TIMESTAMP |
            |

| modified_by | int(11)      | YES  |     | NULL              |
            |

| modified_on | timestamp    | YES  |     | NULL              | on update CURREN
T_TIMESTAMP |

+-------------+--------------+------+-----+-------------------+-----------------
------------+

创建表查询：（我在SQL Fiddle中尝试过）

CREATE TABLE tax ( id int(11) NOT NULL AUTO_INCREMENT, country int(11) NOT NULL, tax decimal(8,5) NOT NULL, created_by int(11) NOT NULL, created_on timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, modified_by int(11) DEFAULT NULL, modified_on timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (id) );

INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,7,51,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,7,51,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,7,49,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,7,50,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,7,48,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (6,9.45450,51,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (3,8.88900,49,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (2,9.08989,49,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (2,4.00087,49,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,1.88900,49,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (4,5.54656,51,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (5,7.45435,50,'2015-06-26 16:26:20');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,43.88776,46,'2015-06-26 17:30:18');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (2,5.67,46,'2015-06-26 17:39:12');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (12,0.009,46,'2015-06-26 17:48:35');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (11,3,46,'2015-06-26 17:55:14');
INSERT INTO tax(country, tax, created_by, created_on) VALUES (1,5,46,'2015-06-26 17:55:39');

请找到SQL Fiddle结果@

结果在phpmyadmin（localhost）中产生

+----+---------+---------+------------+---------------------+-------------+-----
--------+

| id | country | tax     | created_by | created_on          | modified_by | modi
fied_on |

+----+---------+---------+------------+---------------------+-------------+-----
--------+

|  3 |       3 | 7.00000 |         49 | 2015-06-26 16:26:20 |        NULL | NULL
        |

|  5 |       5 | 7.00000 |         48 | 2015-06-26 16:26:20 |        NULL | NULL
        |

|  6 |       6 | 9.45450 |         51 | 2015-06-26 16:26:20 |        NULL | NULL
        |

|  7 |       3 | 8.88900 |         49 | 2015-06-26 16:26:20 |        NULL | NULL
        |

| 11 |       4 | 5.54656 |         51 | 2015-06-26 16:26:20 |        NULL | NULL
        |

| 12 |       5 | 7.45435 |         50 | 2015-06-26 16:26:20 |        NULL | NULL
        |

| 14 |       2 | 5.67000 |         46 | 2015-06-26 17:39:12 |        NULL | NULL
        |

| 15 |      12 | 0.00900 |         46 | 2015-06-26 17:48:35 |        NULL | NULL
        |

| 16 |      11 | 3.00000 |         46 | 2015-06-26 17:55:14 |        NULL | NULL
        |

| 17 |       1 | 5.00000 |         46 | 2015-06-26 17:55:39 |        NULL | NULL
        |

+----+---------+---------+------------+---------------------+-------------+-----
--------+

Answer 1

检查此链接以查看错误日志在说什么。

这是非常错误的，因为这些结果甚至都没有道理。 在哪里可以找到phpmyadmin中的mysql日志？

另请参阅简单的select语句是否可以正常工作。