php - laravel get one of each duplicate column
Get the solution ↓↓↓The structure of the table in the database is as follows:
id | body | user_id | group_id |
---|---|---|---|
1 | test1 | 1 | 1 |
2 | test1 | 2 | 1 |
3 | test1 | 3 | 1 |
3 | test2 | 4 | 2 |
4 | test3 | 5 | 3 |
Answer
Solution:
for Mongodb use this aggregation
[
{
$sort:{
group_id: 1,
user_id:1
}
},
{
'$group': {
'_id': {
'group_id': '$group_id'
},
'a': {
'$first': '$$ROOT'
}
}
}
]
Answer
Solution:
Use Eloquent'sGroupBy
as below, it will fetch the first record from the same group:
DB::table('tablename')
->groupBy('group_id')
->get();
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