I have such SQL query, which works fine:
SELECT A.program_id FROM A
LEFT JOIN B
ON A.program_id = B.program_id
WHERE
B.program_id IS NULL
But i want it to rewrite into LARAVEL style, like this:
\DB::table('A')
->join('B', 'A.program_id', '=', 'B.program_id')
->select('A.program_id')
->whereNull('B.program_id')
->get()->toArray();
But this code returns me 0 results.
You are using join instead of left join
Try this
\DB::table('A')
->leftjoin('B', 'A.program_id', '=', 'B.program_id')
->select('A.program_id')
->whereNull('B.program_id')
->where('A.student_id', '=', 5)
->get()->toArray();
It will produce a query like
Related
Im trying to convert a postgresql query to the laravel query builder style.
I have almost no experience with the laravel query builder. I dont want to use the DB raw.
SELECT ca1.component, ca1.previousfeeder, COUNT(ca1.previousfeeder)
FROM mydbcarrdata_10.carrier ca1
WHERE ca1.component IN (
SELECT e.articlename
FROM mydbcarrdata_10.carrier ca
JOIN mydbcompdata_10.component co
ON ca.component = co.name
JOIN mydbmanldata_10.entry e
ON e.articlename = co.name
JOIN mydbmanldata_10.header h
ON h.id = e.headerid
JOIN mydbmanldata_10.mandata m
ON h.layoutid = m.id
JOIN mydblytldata_10.layout l
ON m.layout = l.name
WHERE l.name = 'M2077F_bottom'
GROUP BY e.articlename
)
GROUP BY ca1.component, ca1.previousfeeder
ORDER BY ca1.component asc
Ive found the corresponding query using the query builder:
DB::table('mydbcarrdata_10.carrier')->select(DB::raw('component, previousfeeder, count(previousfeeder)'))
->whereIn('component', DB::table('mydbcarrdata_10.carrier')->select('articlename')
->join('mydbcompdata_10.component', 'component.name', '=', 'carrier.component')
->join('mydbmanldata_10.entry', 'component.name', '=', 'entry.articlename')
->join('mydbmanldata_10.header', 'entry.headerid', '=', 'header.id')
->join('mydbmanldata_10.mandata', 'mandata.id', '=', 'header.layoutid')
->join('mydblytldata_10.layout', 'layout.name', '=', 'mandata.layout')
->where('layout.name', '=', 'M2077F_bottom')
->groupBy('entry.articlename')
->pluck('articlename')
)
->groupBy('component', 'previousfeeder')
->orderBy('component', 'asc')
->get();
This is my query from MySQL. I want to use 'LEFT JOIN' to two same tables with different aliases and having an 'ON' that has 'AND' inside its parenthesis. And this query arrives with the correct results, but my problem is how can I know the equivalent of this query to its Laravel query?
SELECT * FROM table1 AS a
LEFT JOIN table1 AS b
ON (a.column1 = b.column1 AND a.column2 < b.column2)
WHERE b.column2 is null;
And then I use this query in Laravel Query Builder which will query the wrong results.
DB::table('table1 As a')
->leftJoin('table1 As b', 'a.column1', '=', 'b.column1')
->leftJoin('table2 As c','a.column2', '<', 'c.column2')
->whereNull('c.column2')
->get();
This Laravel query is equivalent to this MySQL query which will, unfortunately, query the same wrong results:
SELECT * FROM table1 AS a
LEFT JOIN table1 AS b
ON (a.column1 = b.column1 AND )
LEFT JOIN table1 AS c
ON (a.column2 < c.column2)
WHERE b.column2 is null;
You need to pass a function to the leftJoin() Something like this...
DB::table('table1 as a')
->leftJoin('table1 as b', function($join) {
return $join->on('a.column1', '=', 'b.column1')
->whereColumn('a.column2', '<', 'b.column2');
})->get();
I have question about left join table which using having count to select main table to be shown with the condition described as below:
select b.id, b.location_name, b.box_identity
from box b
left join device d on b.id = d.box_id
and d.deleted_at is null
group by b.id, b.location_name, b.box_identity
having count(d.*) < COALESCE(b.device_slot, 3)
order by b.id desc
i have tried using eloquent code like this, but DB::raw is not working in $join function
$boxes = Box::leftJoin('device', function($join) {
$join->on('box.id', '=', 'device.box_id');
$join->on(DB::raw('device.deleted_at is null'));
})
->select('box.id', 'box.box_identity', 'box.location_name')
->groupBy('box.id', 'box.box_identity', 'box.location_name')
->havingRaw('COUNT(device.*) < COALESCE(box.device_slot, 3)')
->orderBy('box.id', 'desc')
->get();
How can i achieve this query using laravel eloquent? Thanks in advance!
use this :
$boxes = Box::leftJoin('device', function($join) {
$join->on('box.id', '=', 'device.box_id');
$join->whereRaw('device.deleted_at is null');
})
I want to join department d table with department dl table and user u table. I have done this in SQL query.
SELECT distinct(dl.head),
u.user_name,
u.id
from department d
inner join department dl on d.parent_department_string_id=dl.string_id
inner join users u on dl.head=u.user_name
where d.sl_flag=1
I want to do the same in Laravel query. Is it possible to join the same table using join in Laravel?
You can try something like this.
$departmentData = DB::table('department AS d')
->innerJoin('department AS d1', function($join) {
$join->on('d.parent_department_string_id', '=', 'd1.string_id');
})
->innerJoin('users AS u', function($userJoin) {
$userJoin->on('d1.head', '=', 'u.user_name');
})
->where('d.sl_flag', '=', 1)
->select(\DB::raw('distinct(dl.head) AS head'), 'u.user_name', 'u.id')
->get();
I have a sql query with joins is
select t.id,t.trip_id,c.containerid,s.shipment_name,s.source_location_name,s.destination_location_name,ss.status_name,st.status_name as status_type from
(select T.* from(SELECT * FROM tbl_trip_status ORDER BY id DESC) T group by T.trip_id) ts
JOIN tbl_trips t ON t.id=ts.trip_id
JOIN tbl_container c ON c.id=t.container_id
JOIN tbl_shipment s ON s.id=t.shipment_id
JOIN tbl_statuses ss ON ss.id=ts.status_id
JOIN tbl_status_types st ON st.id=ss.status_type
where t.status=1 and t.user_id in (1,2,3,4,5,6,14)
ORDER BY `t`.`trip_id` ASC
I need this query in eloquent mode while am trying to call paginate() with this raw query, it showing
call to membered function paginate() on array
Thanks to all
I found one solution in eloquent query,i.e.,
DB::table('tbl_trips as t')->select('t.id','t.trip_id','c.containerid','s.shipment_name','s.source_location_name','s.destination_location_name','ss.status_name','st.status_name as status_type')
->join(DB::raw('(select T.* from(SELECT * FROM tbl_trip_status ORDER BY id DESC) T group by T.trip_id) ts'),'ts.trip_id', '=', 't.id')
->join('tbl_container as c', 'c.id', '=', 't.container_id')
->join('tbl_shipment as s', 's.id', '=', 't.shipment_id')
->join('tbl_statuses as ss', 'ss.id', '=', 'ts.status_id')
->join('tbl_status_types as st', 'st.id', '=', 'ss.status_type')
->where('t.status','=',"1")
->where('t.id', '=', 'ts.trip_id')
->whereIn('t.user_id',$subusrs)
->paginate(10);
Thats all..
I think the issue is, after getting the data from your query, you have converted that Std Class Object to an array that's why the error you are getting.
Try this:
$data = DB::select(DB::raw('your query'));
here $data is an Std Class Object on which you can call the paginate functions.
Reference