Select date range into different column - mysql

Question

Name
Date
Score
A
01-01-2023
100
A
01-01-2023
200
A
03-01-2023
300
B
02-01-2023
400
B
03-01-2023
100
B
03-01-2023
100
i have this table and i want to seperate it into multiple column of date and SUM the score on that date using Query Builder laravel or Raw SQL so it become like :
Name
Day 1
Day 2
Day 3
A
300
0
300
B
0
400
200
all of this is upto the current month so january until 31 and so on

Answer 1

You aren't providing anything like your attempted query, how you are passing the date ( it is a range, month only etc ), and your desired json ouput.
its hard to even assume how you are going to do things specially you are passing a column value as column name in your desired result (which doesn't make much sense with raw sql query unless those columns
aren't dynamic).
but to give you a starting point, you can simply group them by name, then date, then do another grouping by date in the collection
e.i;
$result = DB::table('table_name')->select([
'name',
'date',
])
->selectRaw('sum(score) AS score')
->groupBy(['name', 'date'])->get();
return $result->groupBy('date');
then you should be able to get result in a format like below;
{
"01-01-2023" : [
{
"name": "A",
"date": "01-01-2023",
"score": "300"
}
],
"02-01-2023" : [
{
"name": "A",
"date": "02-01-2023",
"score": "300"
}
{
"name": "B",
"date": "02-01-2023",
"score": "200"
}
],
"03-01-2023" : [
.
.
.
]
}
For you desired table result, thats better be changed to a dynamic rows instead of dynamic column
EDIT
In reference with Karl answer, you can loop through a date range and inject additional select statement.
e.i. current month dates
$dateRange = \Carbon\CarbonPeriod::create(now()->startOfMonth(), now()->endOfMonth() )->toArray();
$result = DB::table('table_name')->select(['name']);
foreach ($dateRange as $date) {
$dateFormat = $date->format('d-m-Y');
$day = $date->format('j');
$result->selectRaw("SUM(CASE WHEN Date = '$dateFormat' THEN Score ELSE 0 END) AS 'Day $day'");
}
return $result->groupBy('name')->get();

Answer 2

just to keep date in group by
->groupBy('date');