Laravel GroupBy multiple columns with date - laravel

Question

I have these fields in my table, I want get the data by month of the selected year & type_id, then SUM the amount on each month.
Ex: selectYear = 2019
Here is my account_table
id | type_id | amount | kind | created_at
1 | 2 | 200 | expense | 2019-01-15 10:14:31
2 | 2 | 400 | income | 2019-01-15 10:14:31
3 | 2 | 300 | expense | 2018-01-15 10:14:31
4 | 5 | 100 | expense | 2019-02-15 10:14:31
5 | 5 | 200 | income | 2019-03-15 10:14:31
this what I expected output.
if kind is expense the amount is -,
if kind is income the amount is +
Ex. on the month of Jan.
id 1 has 200 expense, and id 2 has 400 income
formula -200 + 400
Jan | Feb | Mar | ... so on
200 | 100 | 200 | ... so on
I hope I delivered and explain well, I am stuck on this functions, please I need help,
UPDATE.
Expected OUTPUT
Thanks in advance.

Answer 1

first, you must define or parse your year and month to numeric value. ex : January become 01, February become 02 etc.
in example :
$year = 2019;
$month = 01;
And you can use this :
$total = 0;
$data = DB::table('account_table')->whereMonth('created_at',$month)->whereYear('created_at',$year)->where('type_id',$type_id)->get;
foreach($data as $value){
if($value->kind == 'income'){
$total += $value->amount;
else{
$total -= $value->amount;
}
}
return $total;

Answer 2

Try following query on your account table:
Account::select(
DB::raw('SUM(IF(kind = "expense", amount * -1, amount)) as sum'),
DB::raw('YEAR(date) as year'),
DB::raw('MONTH(date) as month'),
)
->where('type', $type)
->where(DB::raw('YEAR(date)'), $selectYear)
->groupBy(DB::raw('MONTH(date)'));
You will get data like this:
[
[ sum: 400, year: 2020, month: 7, ]
[ sum: 500, year: 2020, month: 8, ]
...
]