dql

So I have this table: mysql> DESCRIBE table; +-------+------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------+------------------+------+-----+---------+----------------+ | id | int(15) unsigned | NO | PRI | NULL | auto_increment | | unid | char(9) | NO | UNI | NULL | | | rs | varchar(255) | NO | | NULL | | +-------+------------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec) Which contains millions of rows: mysql> SELECT COUNT(1) FROM table; +----------+ | COUNT(1) | +----------+ | 9435361 | +----------+ 1 row

I have a MySQL command and I cannot find the equivalent in DQL. I am trying to fetch the list most commented posts. Here is the MySQL command : SELECT posts.id, COUNT(comments.id) AS num FROM posts LEFT JOIN comments ON ( posts.id = comments.post_id ) GROUP BY posts.id Here is the result : id num 1 8 2 9 3 17 4 7 5 6 6 20 7 7 8 10 9 14 10 7 In DQL, it should be : SELECT post, COUNT(comment.id) AS num FROM Entity\Post post LEFT JOIN post.comments comment GROUP BY post.id But this gives : id num 1 50 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 I don't understand where the 50 comes from and why there is

I wonder how to get a random number of Members from a Group, but I do not know what is the best way to do this, and I think ORDER BY RAND() is not the best alternative, as a Group can have more than 100,000 Members, performing this type of query could be very slow. I found this way to make using SQL, but I do not know how to do the same thing in DQL: How can i optimize MySQL's ORDER BY RAND() function? I'm not aware of any way to ORDER BY RAND() "efficiently" from Doctrine. In your situation, the best thing is probably to get primary keys first, shuffle these keys and then make use of them

I am having issues implementing a sub-select solution for ORDERING a resulting dataset before the GROUP BY reduces it. Normally, in SQL you would do a sub-select: SELECT * FROM ( SELECT * FROM a_table order by a_table.timestamp desc ) as table_tmp group by userId However, I am having difficulty implementing this in DQL. Can anyone point me in the right direction please? My query is more complex than this and I assume I JOIN other tables through 'table_tmp' and in the outer SELECT. Thanks. I'm afraid DQL isn't able to handle such a complex query. However Doctrine allows you to write a custom

I have written a DQL query in Doctrine 2: $qb->select('r.position') ->from('\Entities\Races', 'r') ->where($qb->expr()->eq('r.entrantId', ':entrant_id')) ->setParameter('entrant_id', $this->entrantId); $query = $qb->getQuery(); $aRaces = $query->getResult(); Currently it returns the results of the query in an array like so: Array ( [0] => Array ( [position] => 10 ) [1] => Array ( [position] => 4 ) ) I want the result to return an array of Races objects so that I can access the methods associated with the object (I'm pretty sure the previous version of Doctrine returned objects by default). I

I know I have a syntax isse here however I cant figure it out. I'm trying to do a SELECT and INNER JOIN of 5 tables but Symfony is complaining about the Entities in the JOIN are used before being defined. Actual error is as follows: [Semantical Error] line 0, col 121 near 'I ON C.id = ': Error: Identification Variable MySiteBundle:Items used in join path expression but was not defined before. Here is the PHP code. Note: I have shortened this query to two columns, two tables, and one join to keep the question simple and show my point. The actual query is much longer and is producing the same