Doctrine 2 - How to search with DQL and grouping - doctrine

Question

I can't figure out how i can combine my LIKE search with grouping it by date and a category in DQL..
Explanation:
I have a search function that search my events after weight.. it looks like this:
SELECT e as event,
(CASE
(e.name LIKE :searchterm) THEN 10
ELSE 0
END) +
(CASE
WHEN (e.name LIKE :searchtermFull) THEN 5
ELSE 0
END)
AS weight
FROM
\Entities\Event e
WHERE
e.name LIKE :searchterm OR
e.name LIKE :searchtermFull
ORDER BY weight DESC
This works fine, but now i want to have these searchresults grouped by year and date (not time) so my items is grouped like this:
27 jan:
event 1
event 2
28 jan:
event 3
event 4
And i also need to do is to get it grouped my categories so i in the end will have:
27 jan:
Category 1
Event 1
Event 2
Category 2
Event 3
My Database event table:
name varchar(255)
description varchar(255)
created datetime
place_id int(11)
eventdate datetime
organiser_id int(11)
created_user_id int(11)
category int(11)
My Database category table
id int(11)
name varchar(255)
description varchar(255)
I have a Event Entity and a EventCategory Entity and what the EventCategory does is just to bind the category id on to the Event Entity
--Update - my sql so far--
SELECT
c.name,
YEAR(e.eventdate) as year,
MONTH(e.eventdate) as month,
DAY(e.eventdate) as day,
count(*) as total
FROM `events` as e, `eventCategories` as c
WHERE
e.category = c.id
GROUP BY
YEAR(e.eventdate),
MONTH(e.eventdate),
DAY(e.eventdate)
ORDER BY eventdate ASC
The DoctrineExtensions is included by writing this in the autoloader:
$classLoader = new Doctrine\Common\ClassLoader('DoctrineExtensions', ROOT.DS."library");
$classLoader->register();

Answer 1

You don't need to write your own function or install third party library. Since datetime is stored as string, you can use Doctrine's function SUBSTRING() to extract certain part and group by it.
For example:
SELECT SUBSTRING(e.eventdate, 1, 4) AS year FROM … GROUP BY year;

Answer 2

You need to use date functions DAY, MONTH or YEAR (Mysql)
Doctrine as is does not support these functions so you need to write your own (DQL functions) or install this library
Group records by year, month
WHERE ... GROUP BY YEAR(eventdate), MONTH(eventdate) ORDER BY eventdate ASC
Group records by year, month and day
WHERE ... GROUP BY YEAR(eventdate), MONTH(eventdate), DAY(eventdate) ORDER BY eventdate ASC