First of all, sorry my english is not so good.
my expected result is i want to get data which (residence unit id =21300 and residence user id null) AND (residence_user_id=25106 and residence_unit_id=21300) in one query
PLS HELP ME. thanks!
MySQL Raw query :
SELECT * FROM table_name where residence_unit_id = 21300 AND (residence_user_id = 25106 OR residence_user_id is null);
Laravel eloquent query :
Model::where('residence_unit_id', 21300)->where(function($query) {
$query->where('residence_user_id',25106)>orWhereNull('residence_user_id');
});
Query :
DB::whereNull('residence_user_id')->orWhereIn('residence_user_id' , [25106])->where('residence_unit_id' , 213100)->get()
Related
I've created a quiz and I record in DB if people answered right to all question and the time they take to finish the quiz.
I'm trying to create a querybuilder to retrieve the guy who answered correct to the maximum of questions with the minimum of time.
My table looks like this :
So, the request (which works) I did in SQL in the DB is :
SELECT
id
FROM
public.user_quizz
WHERE
quizz_id = 4
AND
number_correct_answers IN (SELECT max(number_correct_answers) FROM user_quizz WHERE quizz_id = 4)
AND
answered_in IN (SELECT min(answered_in) FROM user_quizz WHERE quizz_id = 4);
Of course, I don't know if it's the best (and the most optimal) request we could do in this case, but it works.
Now, I'm trying to translate this query into querybuilder.
I'm blocked on the IN expression. I don't know how I could do the SELECT here.
$qb = $this->createQueryBuilder('u');
$query = $qb->select('u')
->andWhere(
$qb->expr()->eq('u.quizz', ':quizzId'),
$qb->expr()->in(
'u.numberCorrectAnswers',
)
)
->setParameter('quizzId', $quizz->getId())
->getQuery()
;
Thanks for your help.
$qbSelectMax = $this->createQueryBuilder('uc') // user copy, to prevent alias collisions
$qbSelectMax
->select($qb->expr()->max('uc.numberCorrectAnswers'))
->where($qb->expr()->eq('uc.quizz', ':quizzId'));
$qb = $this->createQueryBuilder('u')
$query = $qb->select('u')
->andWhere(
$qb->expr()->eq('u.quizz', ':quizzId'),
$qb->expr()->in(
'u.numberCorrectAnswers',
$qbSelectMax->getDQL()
)
)
->setParameter('quizzId', $quizz->getId())
->getQuery();
You can create sub DQL query to select max numberCorrectAnswers first and then pass DQL right into in parameter
ORDER BY could be used to sort by number of answers and less time taken:
$qb = $this->createQueryBuilder('u')
->orderBy('u.numberCorrectAnswers', 'DESC')
->addOrderBy('u.answeredIn', 'ASC');
I tried to translate this sql query into symfony, but, I have not succeeded . Can you help me plz !
In my database :
FichePDF table
( id , ssocc_id, etudiant_id , path)
Evaluation table
(id , ssocc_id, active)
ssocc_id is a primary key for SousOccasion Table.
my query is :
Select * from FichePDF
inner join Evaluation
ON FichePDF.ssocc_id = Evaluation.ssocc_id;
where Evaluation.active= true ;
thank you !
Please try with below query in your FichePDPRepository, May be it will help you.
$this->createQueryBuilder('FichePDP')
->join('Evaluation', 'e')
->where('e.active = :status')
->setParameter('status', true)
->getQuery();
I have an orders table where there is a status column.
I am trying to get the count of each status like this :
$pending = Order::where('status','=','pending')->count();
$active = Order::where('status','=','active')->count();
But this is not efficient as am having to make one call for each status type.
How can I reduce number of queries ?
To make an SQL request:
SELECT count(DISTINCT `status_id`) FROM `dbname`.orders WHERE `user_id` = '2';
In Laravel you can try the following:
$user->orders()->distinct()->count(["status_id"]);
You could try
$orders = Order::select(DB::raw('count(*) as order_count, status'))
->groupBy('status')
->get();
here is the way you write ->
$users= DB::table('table_name')->distinct()->get(['column_name']);
$users_count = $users->count();
SELECT [FILE_NO] FROM [MY_FILE] WHERE [FILE_NO] LIKE '%s%';
The result return for the above query is :
LS_01
LS_02
LS_03
i am looking if there is a query that can return a "3"
iszit possible?
sorry i ain't good at sql.
SELECT count([FILE_NO]) FROM [MY_FILE] WHERE [FILE_NO] LIKE '%s%';
Hope below query helps
SELECT Count(*) FROM [MY_FILE] WHERE [FILE_NO] LIKE '%s%';
I use codeigniter and have an issue about SELECT MAX ... I couldnot find any solution at google search...
it looks like it returns only id :/ it's giving error for other columns of table :/
Appreciate helps, thanks!
Model:
function get_default()
{
$this->db->select_max('id');
$query = $this->db->getwhere('gallery', array('cat' => "1"));
if($query->num_rows() > 0) {
return $query->row_array(); //return the row as an associative array
}
}
Controller:
$default_img = $this->blabla_model->get_default();
$data['default_id'] = $default_img['id']; // it returns this
$data['default_name'] = $default_img['gname']; // it gives error for gname although it is at table
To achieve your goal, your desire SQL can look something like:
SELECT *
FROM gallery
WHERE cat = '1'
ORDER BY id
LIMIT 1
And to utilise CodeIgniter database class:
$this->db->select('*');
$this->db->where('cat', '1');
$this->db->order_by('id', 'DESC');
$this->db->limit(1);
$query = $this->db->get('gallery');
That is correct: select_max returns only the value, and no other column. From the specs:
$this->db->select_max('age');
$query = $this->db->get('members');
// Produces: SELECT MAX(age) as age FROM members
You may want to read the value first, and run another query.
For an id, you can also use $id = $this->db->insert_id();
See also: http://www.hostfree.com/user_guide/database/active_record.html#select
CodeIgniter will select * if nothing else is selected. By setting select_max() you are populating the select property and therefore saying you ONLY want that value.
To solve this, just combine select_max() and select():
$this->db->select('somefield, another_field');
$this->db->select_max('age');
or even:
$this->db->select('sometable.*', FALSE);
$this->db->select_max('age');
Should do the trick.
It should be noted that you may of course also utilize your own "custom" sql statements in CodeIgniter, you're not limited to the active record sql functions you've outlined thus far. Another active record function that CodeIgniter provides is $this->db->query(); Which allows you to submit your own SQL queries (including variables) like so:
function foo_bar()
{
$cat = 1;
$limit = 1;
$sql = "
SELECT *
FROM gallery
WHERE cat = $cat
ORDER BY id
LIMIT $limit
";
$data['query'] = $this->db->query($sql);
return $data['query'];
}
Recently I have been utilizing this quite a bit as I've been doing some queries that are difficult (if not annoying or impossible) to pull off with CI's explicit active record functions.
I realize you may know this already, just thought it would help to include for posterity.
2 helpful links are:
http://codeigniter.com/user_guide/database/results.html
http://codeigniter.com/user_guide/database/examples.html