Laravel Eloquent groupBy() AND also return count of each group

问题

I have a table that contains, amongst other columns, a column of browser versions. And I simply want to know from the record-set, how many of each type of browser there are. So, I need to end up with something like this: Total Records: 10; Internet Explorer 8: 2; Chrome 25: 4; Firefox 20: 4. (All adding up to 10)

Here's my two pence:

$user_info = Usermeta::groupBy('browser')->get();

Of course that just contains the 3 browsers and not the number of each. How can I do this?

回答1:

This is working for me:

$user_info = DB::table('usermetas')
                 ->select('browser', DB::raw('count(*) as total'))
                 ->groupBy('browser')
                 ->get();

回答2:

This works for me (Laravel 5.1):

$user_info = Usermeta::groupBy('browser')->select('browser', DB::raw('count(*) as total'))->get();

回答3:

Thanks Antonio,

I've just added the lists command at the end so it will only return one array with key and count:

Laravel 4

$user_info = DB::table('usermetas')
             ->select('browser', DB::raw('count(*) as total'))
             ->groupBy('browser')
             ->lists('total','browser');

Laravel 5.1

$user_info = DB::table('usermetas')
             ->select('browser', DB::raw('count(*) as total'))
             ->groupBy('browser')
             ->lists('total','browser')->all();

Laravel 5.2+

$user_info = DB::table('usermetas')
             ->select('browser', DB::raw('count(*) as total'))
             ->groupBy('browser')
             ->pluck('total','browser')->all();

回答4:

Works that way as well, a bit more tidy. getQuery() just returns the underlying builder, which already contains the table reference.

$browser_total_raw = DB::raw('count(*) as total');
$user_info = Usermeta::getQuery()
                     ->select('browser', $browser_total_raw)
                     ->groupBy('browser')
                     ->pluck('total','browser');

回答5:

If you want to get collection, groupBy and count:

$collection = ModelName::groupBy('group_id')
->selectRaw('count(*) as total, group_id')
->get();

Cheers!

回答6:

Open config/database.php
Find strict key inside mysql connection settings
Set the value to false

回答7:

Here is a more Laravel way to handle group by without the need to use raw statements.

$sources = $sources->where('age','>', 31)->groupBy('age');

$output = null;
foreach($sources as $key => $source) {
    foreach($source as $item) {
        //get each item in the group
    }
    $output[$key] = $source->count();
}

回答8:

Try with this

->groupBy('state_id','locality')
  ->havingRaw('count > 1 ')
  ->having('items.name','LIKE',"%$keyword%")
  ->orHavingRaw('brand LIKE ?',array("%$keyword%"))

来源：https://stackoverflow.com/questions/18533080/laravel-eloquent-groupby-and-also-return-count-of-each-group

标签

laravel

laravel-4

eloquent