Laravel - Join tables across 2 databases (same server) - php

Question

I'm trying to join 2 tables in 2 databases. But using the common solutions don't seem to be working and I can't figure out why. Here is what I have:
My connections:
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'data'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'schema' => env('DB_SCHEMA', 'public'),
],
'auth' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE_AUTH', 'authentication'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'schema' => env('DB_SCHEMA', 'public'),
]
The Laravel query I'm trying to run:
Files::where('sender_id',$userId)
->join('authentication.users as users','Policies.sender_id','=','users.id')
->select('*')
->get();
The table Files belong to database data.
But this gives me an error SQLSTATE[42P01]: Undefined table: 7 ERROR: relation "authentication.users" does not exist
I know the connection to the authentication table works since I can do this
DB::connection('auth')->table('users')->whereIn('id', '123')->first();
I've tried replacing authentication with auth but to no avail.
What am I doing wrong? Thanks.

Answer 1

Using query builder :
$query = DB::table('database1.table1 as dt1')->leftjoin('database2.table2 as dt2', 'dt2.ID', '=', 'dt1.ID');
$output = $query->select(['dt1.*','dt2.*'])->get();
using Eloquent model option:
Model1::where('postID',$postID)
->join('database2.table2 as db2','Model1.id','=','db2.id')
->select(['Model1.*','db2.firstName','db2.lastName'])
->orderBy('score','desc')
->get();
This might be a duplicate ask. Pls refer Join two MySQL tables in different databases on the same server with Laravel Eloquent