I use Zend_Db_Select and I want to make multi-condition in an AND, but don't know if it's possible or not... I search in many forums but don't find any answer...
I want to have a query like this :
SELECT
`t`.*
FROM
`T_table` AS `t`
WHERE
(t.id = '123456')
AND (
(t.param = 'yyy')
OR (t.param = 'xxx')
OR (....)
)
Thanks in advance...
If you are intending to check a single field against multi-values, use IN clause
$select->where('t.id = ?', '123456')
->where('t.param IN(?)', array('value1', 'value2', 'value3'));
Hope it helps.
I had same issue as you in one of my project. Here how it worked for me
$select = $this->_table->select()
->from(array('t' => 'T_table');
$select->where('t.id = ?', '123456');
$select->where('t.param =' . $varY . ' OR t.param = ' . $varX);
Basically, you're explicitly writing the OR inside a select->where().
Related
I need help in filtering the content of this SQL column. I have unfortunately been unsuccessful so far. I will be happy for any assistance.
My goal is for all the unc paths to bear the same format.
All should look like: \\ps9\wa033242. Meaning all should begin with the "\\" replacing the "///"
I tried truncating it but because of the different string length, I have problems.
I tried truncating and UPDATING
SELECT
cw_platz.nummer,
cw_platz.nwaddress,
cw_platz.bezeichnung,
os_cw.cw_ldzuplatz.ldruckernr,
os_cw.cw_ldzuplatz.papierschacht,
os_cw.cw_ldzuplatz.treibername,
cw_logischerdrucker.bezeichnung
FROM
cw_platz,
os_cw.cw_ldzuplatz,
cw_logischerdrucker
WHERE
cw_platz.nummer = os_cw.cw_ldzuplatz.platznr and
cw_logischerdrucker.nummer = os_cw.cw_ldzuplatz.ldruckernr and
cw_platz.bezeichnung in cw_platz.bezeichnung
This is my result:
My first thought is to simply use something like REPLACE(yourstringhere, '/','\').
Is it something you already tried?
Reference: https://learn.microsoft.com/en-us/sql/t-sql/functions/replace-transact-sql?view=sql-server-2017
you could use replace
select replace('client/ps9///wa033242//', '/' ,'\');.
and for update
update your_table
set your_column = replace(your_column, '/' ,'\')
try avoid .. the where like
UPDATE os_cw.cw_ldzuplatz
SET os_cw.cw_ldzuplatz.treibername = REPLACE(os_cw.cw_ldzuplatz.treibername, '/' ,'\')
FROM
cw_platz,
os_cw.cw_ldzuplatz,
cw_logischerdrucker
WHERE
cw_platz.nummer = os_cw.cw_ldzuplatz.platznr and
cw_logischerdrucker.nummer = os_cw.cw_ldzuplatz.ldruckernr and
cw_platz.bezeichnung = cw_platz.bezeichnung
Try this it will help you.
UPDATE os_cw.cw_ldzuplatz
SET os_cw.cw_ldzuplatz.treibername = REPLACE(os_cw.cw_ldzuplatz.treibername, '\\','///')
FROM
cw_platz,
os_cw.cw_ldzuplatz,
cw_logischerdrucker
WHERE
cw_platz.nummer = os_cw.cw_ldzuplatz.platznr and
cw_logischerdrucker.nummer = os_cw.cw_ldzuplatz.ldruckernr and
cw_platz.bezeichnung = cw_platz.bezeichnung
and TREIBERNAME like '\\%'
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'd like to get value by the following SQL using Eloquent ORM.
- SQL
SELECT COUNT(*) FROM
(SELECT * FROM abc GROUP BY col1) AS a;
Then I considered the following.
- Code
$sql = Abc::from('abc AS a')->groupBy('col1')->toSql();
$num = Abc::from(\DB::raw($sql))->count();
print $num;
I'm looking for a better solution.
Please tell me simplest solution.
In addition to #delmadord's answer and your comments:
Currently there is no method to create subquery in FROM clause, so you need to manually use raw statement, then, if necessary, you will merge all the bindings:
$sub = Abc::where(..)->groupBy(..); // Eloquent Builder instance
$count = DB::table( DB::raw("({$sub->toSql()}) as sub") )
->mergeBindings($sub->getQuery()) // you need to get underlying Query Builder
->count();
Mind that you need to merge bindings in correct order. If you have other bound clauses, you must put them after mergeBindings:
$count = DB::table( DB::raw("({$sub->toSql()}) as sub") )
// ->where(..) wrong
->mergeBindings($sub->getQuery()) // you need to get underlying Query Builder
// ->where(..) correct
->count();
Laravel v5.6.12 (2018-03-14) added fromSub() and fromRaw() methods to query builder (#23476).
The accepted answer is correct but can be simplified into:
DB::query()->fromSub(function ($query) {
$query->from('abc')->groupBy('col1');
}, 'a')->count();
The above snippet produces the following SQL:
select count(*) as aggregate from (select * from `abc` group by `col1`) as `a`
The solution of #JarekTkaczyk it is exactly what I was looking for. The only thing I miss is how to do it when you are using
DB::table() queries. In this case, this is how I do it:
$other = DB::table( DB::raw("({$sub->toSql()}) as sub") )->select(
'something',
DB::raw('sum( qty ) as qty'),
'foo',
'bar'
);
$other->mergeBindings( $sub );
$other->groupBy('something');
$other->groupBy('foo');
$other->groupBy('bar');
print $other->toSql();
$other->get();
Special atention how to make the mergeBindings without using the getQuery() method
From laravel 5.5 there is a dedicated method for subqueries and you can use it like this:
Abc::selectSub(function($q) {
$q->select('*')->groupBy('col1');
}, 'a')->count('a.*');
or
Abc::selectSub(Abc::select('*')->groupBy('col1'), 'a')->count('a.*');
There are many readable ways to do these kinds of queries at the moment (Laravel 8).
// option 1: DB::table(Closure, alias) for subquery
$count = DB::table(function ($sub) {
$sub->from('abc')
->groupBy('col1');
}, 'a')
->count();
// option 2: DB::table(Builder, alias) for subquery
$sub = DB::table('abc')->groupBy('col1');
$count = DB::table($sub, 'a')->count();
// option 3: DB::query()->from(Closure, alias)
$count = DB::query()
->from(function ($sub) {
$sub->from('abc')
->groupBy('col1')
}, 'a')
->count();
// option 4: DB::query()->from(Builder, alias)
$sub = DB::table('abc')->groupBy('col1');
$count = DB::query()->from($sub, 'a')->count();
For such small subqueries, you could even try fitting them in a single line with PHP 7.4's short closures but this approach can be harder to mantain.
$count = DB::table(fn($sub) => $sub->from('abc')->groupBy('col1'), 'a')->count();
Note that I'm using count() instead of explicitly writing the count(*) statement and using get() or first() for the results (which you can easily do by replacing count() with selectRaw(count(*))->first()).
The reason for this is simple: It returns the number instead of an object with an awkwardly named property (count(*) unless you used an alias in the query)
Which looks better?
// using count() in the builder
echo $count;
// using selectRaw('count(*)')->first() in the builder
echo $count->{'count(*)'};
Correct way described in this answer: https://stackoverflow.com/a/52772444/2519714
Most popular answer at current moment is not totally correct.
This way https://stackoverflow.com/a/24838367/2519714 is not correct in some cases like: sub select has where bindings, then joining table to sub select, then other wheres added to all query. For example query:
select * from (select * from t1 where col1 = ?) join t2 on col1 = col2 and col3 = ? where t2.col4 = ?
To make this query you will write code like:
$subQuery = DB::query()->from('t1')->where('t1.col1', 'val1');
$query = DB::query()->from(DB::raw('('. $subQuery->toSql() . ') AS subquery'))
->mergeBindings($subQuery->getBindings());
$query->join('t2', function(JoinClause $join) {
$join->on('subquery.col1', 't2.col2');
$join->where('t2.col3', 'val3');
})->where('t2.col4', 'val4');
During executing this query, his method $query->getBindings() will return bindings in incorrect order like ['val3', 'val1', 'val4'] in this case instead correct ['val1', 'val3', 'val4'] for raw sql described above.
One more time correct way to do this:
$subQuery = DB::query()->from('t1')->where('t1.col1', 'val1');
$query = DB::query()->fromSub($subQuery, 'subquery');
$query->join('t2', function(JoinClause $join) {
$join->on('subquery.col1', 't2.col2');
$join->where('t2.col3', 'val3');
})->where('t2.col4', 'val4');
Also bindings will be automatically and correctly merged to new query.
I like doing something like this:
Message::select('*')
->from(DB::raw("( SELECT * FROM `messages`
WHERE `to_id` = ".Auth::id()." AND `isseen` = 0
GROUP BY `from_id` asc) as `sub`"))
->count();
It's not very elegant, but it's simple.
This works fine
$q1 = DB::table('tableA')->groupBy('col');
$data = DB::table(DB::raw("({$q1->toSql()}) as sub"))->mergeBindings($q1)->get();
I could not made your code to do the desired query, the AS is an alias only for the table abc, not for the derived table.
Laravel Query Builder does not implicitly support derived table aliases, DB::raw is most likely needed for this.
The most straight solution I could came up with is almost identical to yours, however produces the query as you asked for:
$sql = Abc::groupBy('col1')->toSql();
$count = DB::table(DB::raw("($sql) AS a"))->count();
The produced query is
select count(*) as aggregate from (select * from `abc` group by `col1`) AS a;
->selectRaw('your subquery as somefield')
Deriving off mpskovvang's answer, here is what it would look like using eloquent model. (I tried updating mpskovvang answer to include this, but there's too many edit requests for it.)
$qry = Abc::where('col2', 'value')->groupBy('col1')->selectRaw('1');
$num = Abc::from($qry, 'q1')->count();
print $num;
Produces...
SELECT COUNT(*) as aggregate FROM (SELECT 1 FROM Abc WHERE col2='value' GROUP BY col1) as q1
I'm trying to select the following data with the limited information. The problem is that when I have added the .select distinct section it has killed my query.
#activities = Availability.select.("DISTINCT user_id").where("team_id = ? and schedule_id = ?", current_user[:team_id], #next_game).last(5)
There's one too many dot's in there as the 'DISTINCT user_id' is the arguments for the select method call.
So:
Availability.select("DISTINCT user_id").where("team_id = ? and schedule_id = ?", current_user[:team_id], #next_game).last(5)
Also be aware that you're now only selecting one attribute and you'll get a partial representation of the classes back. To circumvent this just select the attributes you need later in the code.
Availability.select("DISTINCT(`user_id`), `team_id`").where("team_id = ? and schedule_id = ?", current_user[:team_id], #next_game).last(5)
etc.
Hope this helps.
What I'm after is the following SQL query
SELECT p.*
FROM player p
WHERE CONCAT(p.first_name, ' ', p.last_name) = ?
in DQL. What I have so far is
$qb->add('select', 'p')
->add('from', 'VNNCoreBundle:Player p')
->add('where', $qb->expr()->eq(
$qb->expr()->concat('p.firstName', $qb->expr()->concat(' ', 'p.lastName')),
':name'
))
->setParameters(array('name' => $name));
but that's wrong.
I know I could always just get the ID of my record with native SQL, then do findOneById() to get the record with Doctrine. On one hand, it feels like a kludge/hack to do that, and on the other hand, it feels kind of dumb to do in DQL to do what would be a simple query in straight SQL, since the DQL isn't shaping up to be very elegant. Anyway, I've put this much time into it, and I'm curious now what the right way to do it is in DQL.
I ended up going the native SQL route. I kind of forgot about that third option.
$rsm = new ResultSetMapping;
$rsm->addEntityResult('Player', 'p');
$rsm->addFieldResult('p', 'id', 'player_id');
$rsm->addFieldResult('p', 'name', 'name');
$sql = "
SELECT p.*
FROM players p
WHERE CONCAT(p.first_name, ' ', p.last_name) = ?
";
$query = $this->getEntityManager()->createNativeQuery($sql, $rsm);
$query->setParameter(1, $name);