CODEWITHSUNDEEP
mysqlphpmyadmin
Syed Nizamudeen
Syed Nizamudeen

Reputation: 440

Different Results for Same SELECT Query When Executing on phpmyadmin and SQL Fiddle

I wrote a query to fetch latest tax of all countries in a MySQL Table. Same Query Executed in phpmyadmin(localhost) and SQL Fiddle. Both results are different. But SQL Fiddle Producing the Correct Result.

I Could able to find same question Posted on Stack Overflow Earlier at this Link

I didn't get any help from the post. My Issue is how get the correct result on phpmyadmin(localhost) for the SELECT Query I wrote below; is there any problem with my SELECT Query?

Select Query: (Which I Executed on Both Phpmyadmin and SQL Fiddle)

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;

Table

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

| 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 |

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

Create Table Query: (Which I tried in SQL Fiddle)

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');

Please find SQL Fiddle Result @

Result Produced in phpmyadmin(localhost)

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

| 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
        |

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

Upvotes: 0

Views: 105

Answers (1)

ABrowBoyGenius
ABrowBoyGenius

Reputation: 73

Check out this link to see what the error log is saying.

This is very wrong because those results dont even make sense. where can I find mysql logs in phpmyadmin?

Also see if simple select statements are working as they should.

Upvotes: 0

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