How to add group by to eloquent query after unionAll in Laravel? - php

Question

I want to convert this Mysql code to Laravel Eloquent
select service_id, sum(cnt) from
(
select * from
(
select service_id, count(*) cnt from prdouct_notifs
join products on products.id = prdouct_notifs.product_id
where prdouct_notifs.user_id = 268
and prdouct_notifs.deleted_at is null
and prdouct_notifs.block = 4
group by service_id
) first_table
union All
(
select service_id, count(*) cnt from products
where products.pro_user_id = 268
and products.status = 47575
group by service_id
)
) total_union group by service_id
I changed this code to Laravel Eloquent.
$get_product = Product::where('pro_user_id', 268)
->where('status', 47575)
->groupby('service_id')
->selectRaw('service_id ,count(*) cnt');
$get_final_product = prdouct_notifs::join('products', function ($join){
$join->on('products.id', '=', 'prdouct_notifs.product_id')
->where('prdouct_notifs.user_id', 268)
->where('prdouct_notifs.block', 4);
})
->selectRaw('service_id ,count(*) cnt')
->groupby('service_id')
->unionAll($get_product)
->get();
the question is how to run groupby after unionAll
That's what I want to changed into eloquent.
total_union group by service_id

Answer 1

My idea is to put the UNION into a sub query before grouping. I hope this answers to your question.
$product = DB::table('products as p')
->where('p.status', 47575)
->select('p.service_id as service_id');
$productNotify= DB::table('prdouct_notifs as pn')
->select('pn.service_id as service_id')
->union($product);
$groupby = DB::query()->fromSub($productNotify, 'p_pn')
->select('service_id', DB::raw('COUNT(*) as cnt'))
->groupBy('service_id');
Which produce the following SQL
select "stud_id", COUNT(*) as total_asset from (
select * from (select p.service_id as service_id from products as p)
union
select * from (select pn.service_id as service_id from prdouct_notifs as pn)
) as p_pn
group by service_id