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join multiple table


join multiple table

By : Satish Singh
Date : November 22 2020, 02:42 PM
wish helps you Sounds like you need to JOIN the first 2 tables and UNION in the other 2.
See if this works for you --
code :
SELECT a.code, a.accnt, NULL AS ref, b.alloted
FROM A 
LEFT JOIN B ON a.code = b.code

UNION

SELECT c.code, c.project AS accnt, c.ref, NULL AS alloted

UNION 

SELECT d.code, d.item AS accnt, d.ref, d.cost as alloted


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How do I use join to get a single result searching multiple rows on the join table?

How do I use join to get a single result searching multiple rows on the join table?


By : Z.shiyu
Date : March 29 2020, 07:55 AM
Hope that helps I don't really know how to word this but I think an example would make this really easy. Lets say there is a database of students and classes. , Put a HAVING clause in there, with appropriate GROUP BY and whatnot:
code :
HAVING COUNT(student_class.class_id) = 2
MYSQL: Multiple Table Join - Conditional on previous join

MYSQL: Multiple Table Join - Conditional on previous join


By : M.David
Date : March 29 2020, 07:55 AM
I hope this helps you . , Just need to change
COUNT(a.account_id) AS member_accounts_total,
SQL LEFT JOIN multiple tables including link to 1 table for each join

SQL LEFT JOIN multiple tables including link to 1 table for each join


By : bravetrousers
Date : March 29 2020, 07:55 AM
How to add left join multiple tables in hibernate based on 4th table attributes as join condition

How to add left join multiple tables in hibernate based on 4th table attributes as join condition


By : praveenkumar N
Date : March 29 2020, 07:55 AM
help you fix your problem Updated
I have done some tests based on your configuration and this is the HQL query that worked for me:
code :
select distinct a 
from A a, B b, C c 
where ((a.d=b.d) or (a.d is null) or (b.d is null)) 
   and ((b.d=c.d) or (b.d is null) or (c.d is null))
Laravel 5.3 Eloquent Join table with multiple condition join having count

Laravel 5.3 Eloquent Join table with multiple condition join having count


By : Leyla Rezayi
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I have question about left join table which using having count to select main table to be shown with the condition described as below: , use this :
code :
$boxes = Box::leftJoin('device', function($join) {
    $join->on('box.id', '=', 'device.box_id');
    $join->whereRaw('device.deleted_at is null');
})
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