laravel - 如何在Laravel中使用GROUP_CONCAT

Question

$assignment = assignment::find(Crypt::decrypt($id));
$assignment_details = $assignment->raw_plan()->groupBy('flag')->get();

我想在laravel中关注此查询的结果

SELECT GROUP_CONCAT(name) AS 'names' FROM `raw_plans` where `assignment_id` = 1 GROUP BY`flag`

请建议我如何在Laravel中使用GROUP_CONCAT

Answer 1

您可以使用关系作为查询构建器来按以下方式获取结果：

$assignment_details = $assignment->raw_plan()
                                ->select(DB::raw('group_concat(name) as names'))
                                ->where('assignment_id', 1)
                                ->groupBy('flag')
                                ->get();

更新资料

在选择中使用 table_name.*获取所有字段。

$assignment_details = $assignment->raw_plan()
                                ->select('raw_plans.*', DB::raw('group_concat(name) as names'))
                                ->where('assignment_id', 1)
                                ->groupBy('flag')
                                ->get();