Laravel Eloquent,按月/年分组

Question

我正在尝试按月和年分组我的数据.

$data ->select(DB::raw('count(id) as `data`'),DB::raw('YEAR(created_at) year, MONTH(created_at) month'))
           ->groupby('year','month')
           ->get();

输出是:

{
"data": 19215,
"year": 2016,
"month": 10
},

如果我只按月分组,我不知道哪个年份属于这个月,我的预期输出是:

{
"clicks": 19215,
"month": 11-2016,
},
{
"clicks": 11215,
"month": 12-2016,

},

我想在sql中,而不是在PHP中.

Answer 1

您可以尝试:

->select(DB::raw('count(id) as `data`'), DB::raw("DATE_FORMAT(created_at, '%m-%Y') new_date"),  DB::raw('YEAR(created_at) year, MONTH(created_at) month'))
->groupby('year','month')
->get();

Answer 2

如果要按年份对结果进行分组，则可以使用闭包，将日期时间解析为所需的格式（年或月）。

这是代码示例：

$res= ModelName::where('someColumn','test')
      ->get()
      ->groupBy(function($val) {
      return Carbon::parse($val->created_at)->format('Y');
});

Answer 3

$result = ModelName::selectRaw('year(created_at) year, monthname(created_at) month, count(*) data')
                ->groupBy('year', 'month')
                ->orderBy('year', 'desc')
                ->get();

Answer 4

对于最新版本的 mysql，接受的答案将给出错误，因此请尝试

$data
    ->selectRaw("
        count(id) AS data, 
        DATE_FORMAT(created_at, '%Y-%m') AS new_date, 
        YEAR(created_at) AS year, 
        MONTH(created_at) AS month
    ")
    ->groupBy('new_date')
    ->get();

参考： https: //dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_date-format