I have two table 1. table_a 2. table_b
And all table have company_id. I want to make relationship among this two table using same company id . Like
select * from table_a left join table_b on table_a.company_id = table_b.company_id;
Please help me out if its really possible. Thank you in advance.
You can use this:
$data = DB::table('table_a')->leftJoin('table_b', 'table_a.company_id', '=', 'table_b.company_id')->get();
Or raw:
$users = DB::table('table_a')
->select(DB::raw('query here'))
->get();
More on:
https://laravel.com/docs/5.7/queries
Related
controlens is a table in my database and entite, state are the fields of this table
SELECT a.entite, a.etat, COUNT(a.etat) as nombre_toperform, b.nombre_performed,c.nombre_incompatible
FROM `controlens` a
LEFT JOIN ( SELECT entite,COUNT(etat) as nombre_performed from `controlens` WHERE etat like 'PERFORMED' GROUP BY entite, etat) b on a.entite = b.entite
LEFT JOIN ( SELECT entite,COUNT(etat) as nombre_incompatible from `controlens` WHERE etat like 'INCOMPATIBLE' GROUP BY entite, etat) c on a.entite = c.entite
WHERE a.etat like '%TOPERFORM%'
GROUP BY a.entite, a.etat, b.nombre_performed,c.nombre_incompatible
There are likely few ways in which you can accomplish this. Here is one idea that might work (note: haven't fully tested, so it might need some tweaks):
$toPerform = '%TOPERFORM%';
$subQuery1 = 'SELECT entite,COUNT(etat) as nombre_performed from `controlens` WHERE etat like 'PERFORMED' GROUP BY entite, etat';
$subQuery2 = 'SELECT entite,COUNT(etat) as nombre_incompatible from `controlens` WHERE etat like 'INCOMPATIBLE' GROUP BY entite, etat';
DB::table('controlens as a')->select([
'a.entite',
'a.etat',
DB::raw('COUNT(a.etat) AS nombre_toperform'),
'b.nombre_performed',
'c.nombre_incompatible'
])
->leftJoin(DB::raw("($subQuery1) as b"), 'a.entite', '=', 'b.entite')
->leftJoin(DB::raw("($subQuery2) as c"), 'a.entite', '=', 'c.entite')
->where('a.etat', $toPerform)
->groupBy('a.entite', 'a.etat', 'b.nombre_performed', 'c.nombre_incompatible');
Alternatively, you could try this package to see if it helps the cause:
eloquent-subquery-magic
Beyond that, here are a few helpful articles that might point you in the correct direction:
subquery with join in
laravel
Laravel Fluent Query Builder Join with
subquery
How to write this (left join, subquery ) in Laravel
5.1?
I have a table that has 100's of entries for over 1000 different products, each identified by a unique UID.
ID UID MANY COLUMNS CREATED AT
1 dqwdwnboofrzrqww1 ... 2018-02-11 23:00:43
2 dqwdwnboofrzrqww1 ... 2018-02-12 01:15:30
3 dqwdwnbsha5drutj5 ... 2018-02-11 23:00:44
4 dqwdwnbsha5drutj5 ... 2018-02-12 01:15:31
5 dqwdwnbvhfg601jk1 ... 2018-02-11 23:00:45
6 dqwdwnbvhfg601jk1 ... 2018-02-12 01:15:33
...
I want to be able to get the last entry for each UID.
ID UID MANY COLUMNS CREATED AT
2 dqwdwnboofrzrqww1 ... 2018-02-12 01:15:30
4 dqwdwnbsha5drutj5 ... 2018-02-12 01:15:317
6 dqwdwnbvhfg601jk1 ... 2018-02-12 01:15:33
Is this possible in one DB call?
I have tried using DB as well as Eloquent but so far I either get zero results or the entire contents of the Table.
Andy
This is easy enough to handle in MySQL:
SELECT t1.*
FROM yourTable t1
INNER JOIN
(
SELECT UID, MAX(created_at) AS max_created_at
FROM yourTable
GROUP BY UID
) t2
ON t1.UID = t2.UID AND
t1.created_at = t2.max_created_at;
Translating this over to Eloquent would be some work, but hopefully this gives you a good starting point.
Edit: You may want to use a LEFT JOIN if you expect that created_at could ever be NULL and that a given UID might only have null created values.
You can use a self join to pick latest row for each UID
select t.*
from yourTable t
left join yourTable t1 on t.uid = t1.uid
and t.created_at < t1.created_at
where t1.uid is null
Using laravel's query builder it would be similar to
DB::table('yourTable as t')
->select('t.*')
->leftJoin('yourTable as t1', function ($join) {
$join->on('t.uid','=','t1.uid')
->where('t.created_at', '<', 't1.created_at');
})
->whereNull('t1.uid')
->get();
Laravel Eloquent select all rows with max created_at
Laravel Eloquent group by most recent record
SELECT p1.* FROM product p1, product p2 where p1.CREATED_AT> p2.CREATED_AT group by p2.UID
You can achieve this with eloquent using orderBy() and groupBy():
$data = TblModel::orderBy('id','DESC')->groupBy('uid')->get();
SOLVED
Thanks to Tim and M Khalid for their replies. It took me down the right road but I hit a snag, hence why I am posting this solution.
This worked:
$allRowsNeeded = DB::table("table as s")
->select('s.*')
->leftJoin("table as s1", function ($join) {
$join->on('s.uid', '=', 's1.uid');
$join->on('s.created_at', '<', 's1.created_at');
})
->whereNull('s1.uid')
->get();
However I got an Access Violation so I had to go in to config/database.php and set
'strict' => false,
inside the 'mysql' config, which removes ONLY_FULL_GROUP_BY from the SQL_MODE.
Thanks again.
You have to use ORDER BY, and LIMITSQL parameters, which will lead you to an easy SQL request :
for exemple, in SQL you should have something like this :
SELECT *
FROM table_name
ORDER BY `created_at` desc
LIMIT 1
This will returns everything in the table. The results will be ordering by the column "created_at" descending. So the first result will be what you're looking for. Then the "LIMIT" tells to return only the first result, so you won't have all your database.
If you wanna make it with eloquent, here is the code doing the same thing :
$model = new Model;
$model->select('*')->orderBy('created_at')->first();
I needed to combine the two table product_price and trade_channels, when I use inner join,
the ID of product_price is remove.
Here is my code
DB::table('product_price')->where('product_id',$id)->where('action','customer_price')
->join('customers','product_price.action_id','=','customers.id')
->get();
A good practise is to select a column that you actually want to use no need of all columns.
Suppose in this case you require all column of product_price table and only customer id from customer_price table then you can do something like this:
DB::table('product_price')
->select(['product_price.*','customer_price.id AS customer_id'])
->where('product_price.product_id',$id)
->where('product_price.action','customer_price')
->join('customers','product_price.action_id','=','customers.id')
->get();
You can select any column but it's good to take alias of join table column in this case it is customer_price so it's not getting confusion if both table has same name column.
Good Luck
try
DB::table('product_price')
->select('*','product_price.id AS product_price_id')
->where('product_id',$id)
->where('action','customer_price')
->join('customers','product_price.action_id','=','customers.id')
->get();
the product_price id would be replace with customers id, so just print out the product_price id with other name.
hope it is help
I have 2 tables that I want to connect
table1:
id
name
table2_id
table_2:
id
name
table1 is connected with table2
When I try to select table1 and the connected row from table2 it works, but because the row names id and name are the same, it overwrites the values of table1.
How can I connect table1 with table2 and get a table1 with this rows in laravel:
id
name
table2_id
table2_name
Review the laravel documentation regarding relationships - If you set up your models as outlined here https://laravel.com/docs/5.3/eloquent-relationships you will be able to call the table2 like:
$result = Table1::find(1)->table2;
However to get the result you want you can use the ->select( function
DB::table('users')->select('name', 'email as user_email')->get();
https://laravel.com/docs/5.2/queries#selects
Something like this
public function scopetable1($query,$id){
return $query = DB::table('table1')
->select('table1.id as id','table1.name as name','table2.id as table2_id', 'table2.name as table2_name' )
->where('table1.id', '=', $id)
->leftJoin('table2', 'table1.table2_id', '=', 'table2.id')
->get();
}
$options = table::join('table1', function($join) {
$join->on('table1.table_id','=','table.id');
$join->take(1);
})->get();
Is there a way to do this, i get error on take function.
the table and table1 has one to many relation, and i'd like to have on join just the first record of table1.
Thanks
Vincenzo