I need to order data by two columns (when the rows have different values for column number 1, order by it; otherwise, order by column number 2)
I'm using a QueryBuilder to create the query.
If I call the orderBy method a second time, it replaces any previously specified orderings.
I can pass two columns as the first parameter:
->orderBy('r.firstColumn, r.secondColumn', 'DESC');
But I cannot pass two ordering directions for the second parameter, so when I execute this query the first column is ordered in an ascending direction and the second one, descending. I would like to use descending for both of them.
Is there a way to do this using QueryBuilder? Do I need to use DQL?
You have to add the order direction right after the column name:
$qb->orderBy('column1 ASC, column2 DESC');
As you have noted, multiple calls to orderBy do not stack, but you can make multiple calls to addOrderBy:
$qb->addOrderBy('column1', 'ASC')
->addOrderBy('column2', 'DESC');
In Doctrine 2.x you can't pass multiple order by using doctrine 'orderBy' or 'addOrderBy' as above examples. Because, it automatically adds the 'ASC' at the end of the last column name when you left the second parameter blank, such as in the 'orderBy' function.
For an example ->orderBy('a.fist_name ASC, a.last_name ASC') will output SQL something like this 'ORDER BY first_name ASC, last_name ASC ASC'. So this is SQL syntax error. Simply because default of the orderBy or addOrderBy is 'ASC'.
To add multiple order by's you need to use 'add' function. And it will be like this.
->add('orderBy','first_name ASC, last_name ASC'). This will give you the correctly formatted SQL.
More info on add() function. https://www.doctrine-project.org/projects/doctrine-orm/en/2.6/reference/query-builder.html#low-level-api
Hope this helps. Cheers!
you can use ->addOrderBy($sort, $order)
Add:Doctrine Querybuilder btw. often uses "special" modifications of the normal methods, see select-addSelect, where-andWhere-orWhere, groupBy-addgroupBy...
You can use orderBy() followed by an addOrderBy() - nesting several orderBy()'s is not possible, but nesting several addOrderBy()'s also works after the initial orderBy().
Example:
$this->createQueryBuilder('entity')
->orderBy('entity.addDate', 'DESC')
->addOrderBy('entity.id', 'DESC')
The orderBy method requires either two strings or an Expr\OrderBy object. If you want to add multiple order declarations, the correct thing is to use addOrderBy method, or instantiate an OrderBy object and populate it accordingly:
# Inside a Repository method:
$myResults = $this->createQueryBuilder('a')
->addOrderBy('a.column1', 'ASC')
->addOrderBy('a.column2', 'ASC')
->addOrderBy('a.column3', 'DESC')
;
# Or, using a OrderBy object:
$orderBy = new OrderBy('a.column1', 'ASC');
$orderBy->add('a.column2', 'ASC');
$orderBy->add('a.column3', 'DESC');
$myResults = $this->createQueryBuilder('a')
->orderBy($orderBy)
;
The comment for orderBy source code notes: Keys are field and values are the order, being either ASC or DESC.. So you can do orderBy->(['field' => Criteria::ASC]).
Related
I've created a custom attribute for a model, and would like to orderBy that that attribute (sortBy is not the solution), after ordering it by that attribute I need to paginate it which is also happening in the query.
This is my current code:
$result = TheEpisode::where('seriesID', $id)->paginate(12);
Before I paginate, I need to orderBy custom attribute - largestNumber ?
Is this possible?
By Laravel.com: The orderBy method allows you to sort the result of the query by a given column. The first argument to the orderBy method should be the column you wish to sort by, while the second argument controls the direction of the sort and may be either asc or desc:
Try this
$result = TheEpisode::where('seriesID', $id)
->orderBy('name', 'desc')
->paginate(12);
References: https://laravel.com/docs/5.3/queries#ordering-grouping-limit-and-offset
I want to use symfony's query builder and add a where to the last item in an array collection
$query = $em->getRepository('RlBookingsBundle:Booking')->createQueryBuilder('b')
->select('b, v, c, ca, q')
->leftJoin('b.vehicle', 'v')
->leftJoin('b.customer', 'c')
->leftJoin('c.address', 'ca')
->leftJoin('b.quote', 'q')
->leftJoin('b.history', 'h') //This is an array collection
->orderBy('b.edited', 'DESC')
;
I want to use only the latest value from history as it is a log but only the most recent entry is valid
->where('h.status IN (:status)')
->setParameter('status', [7]);
Will return all results with h.status = 7 but I would like it to only query the most recent result. Is there anyway to do this?
I tried a groupby on the history field but this seems to groupby with data from the first entry, even if I add an orderby to it.
If the results you get are already ok, but you only want the first, you could just use
...
->setMaxResults(1)
...
If you want to order by history ID desc, you may want to add another orderBy clause before the existing one
...
->orderBy('h.id', 'DESC')
->orderBy('b.edited', 'DESC')
...
If it's more complex than that, I strongly suggest you perform a separate query to get the desired record(s) from history, and THEN use it as a filter, instead of the leftJoin.
I am trying to do a simple query in doctrine but struggling.
$query->select(array(
'app_title' => 'u.title',
'user_name' => 'u.user_name',
'first_used' => 'MIN(u.creation_time)',
'last_used' => 'MAX(u.stop_time)',
'total_usage' => 'SUM(u.stream_seconds)',
))
->from(self::USAGE_TABLE, 'u')
->orderBy('total_usage', 'DESC');
Obviously I get an error about the column name not being known because Doctrine is using it's own aliases (sclr4).
However, if I try and order by the actual value; SUM(u.stream_seconds), then I get an unexpected bracket in the order by clause, I'm pretty sure SQL doesnt support this.
So, I am simply trying to put data in a table and handle the sorting of the columns. This seems so simple, how do I do it? Any ideas?
You can orderBy the SUM result field by list it in query projection by aliasing result using AS.
If you want to use an aggregate function such as MIN(), MAX(), AVG(), you have to use GROUP BY.
Try simmilar to this, which works perfectly for me (BTW instead of associative array in select method):
$q = $this->em()->createQueryBuilder();
$q->select(['product.id', 'product.title'])
->addSelect('SUM(product.price) AS HIDDEN stat_sum_realised')
->from('ModuleAdmin\Entity\ProductEntity', 'product')
->groupBy('product.id');
$q->orderBy('stat_sum_realised', 'DESC');
Aggregate functions are detailed here (for e.x. for MySQL):
http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html
As of Doctrine ORM 2.3, you can also use the HIDDEN keyword, which will avoid (in this case) stat_sum_realised from getting hydrated into your resultset.
Probably quite a simple one, but I'm not having any luck in the docs or searches.
I'm trying to add an order by clause to just one of my ActiveRecord queries as follows:
$result = $this->db->get('mytable');
$this->db->order_by('age', 'ASC');
It works, however I get errors because the order by clause is being applied to all my other queries and I get errors because my age column is not present in all tables.
So how do it limit $this->db->order_by('age', 'ASC') to just that one specific query?
Thanks.
You should have $this->db->order_by(); before $result = $this->db->get('mytable');
It should be in this format
$this->db->where("tablename.column", $task_id);
$this->db->order_by('tablename.column', 'ASC'); // or 'DESC'
$this->db->from('table');
I heed two variables storing the maximum id from a table, and the minimum id from the same table.
the first id is easy to be taken ,using find() and a query like
$first = Model::factory('product')->sale($sale_id)->find();
but how can i retrieve the last id? is there a sorting option in the Kohana 3 ORM?
thanks!
Yes, you can sort resulting rows in ORM with order_by($column, $order). For example, ->order_by('id', 'ASC').
Use QBuilder to get a specific values:
public function get_minmax()
{
return DB::select(array('MAX("id")', 'max_id'),array('MIN("id")', 'min_id'))
->from($this->_table_name)
->execute($this->_db);
}
The problem could actually be that you are setting order_by after find_all. You should put it before. People do tend to put it last.
This way it works.
$smthn = ORM::factory('smthn')
->where('something', '=', something)
->order_by('id', 'desc')
->find_all();
Doing like this, I suppose you'll be :
selecting all lines of your table that correspond to your condition
fetching all those lines from MySQL to PHP
to, finally, only work with one of those lines
Ideally, you should be doing an SQL query that uses the MAX() or the MIN() function -- a bit like this :
select max(your_column) as max_value
from your_table
where ...
Not sure how to do that with Kohana, but this topic on its forum looks interesting.