您好,我正在尝试使用 orderby 和 groupby 一起查询,并提出了这个工作正常的解决方案,这是我的查询
SELECT p1.year_id,p1.tbl_wsp_master_id ,tbl_wsp_masters.WSP_Name
FROM tbl_wsp_years p1
INNER JOIN
(
SELECT max(year_id) MaxPostDate,tbl_wsp_master_id
FROM tbl_wsp_years
GROUP BY tbl_wsp_master_id
) p2
ON p1.tbl_wsp_master_id = p2.tbl_wsp_master_id
AND p1.year_id = p2.MaxPostDate
INNER JOIN tbl_wsp_masters
ON tbl_wsp_masters.id = p1.tbl_wsp_master_id
order by p1.year_id desc
但是我如何在 Laravel Eloquent 中做到这一点。
感谢您的任何建议
最佳答案
我这样解决了谢谢
DB::table('tbl_wsp_years as y1')
->join('tbl_wsp_masters', 'tbl_wsp_masters.id', '=', 'y1.tbl_wsp_master_id')
->select('tbl_wsp_masters.WSP_Name AS WSP_Name', 'y2.*')
->join(DB::raw('(SELECT MAX(year_id) MaxYear, tbl_wsp_master_id FROM tbl_wsp_years GROUP BY tbl_wsp_master_id) y2'),
function($join)
{
$join->on('y1.tbl_wsp_master_id', '=', 'y2.tbl_wsp_master_id');
$join->on('y1.year_id','=','y2.MaxYear');
})
->orderBy('y1.year_id', 'DESC')
->get();
关于mysql - Laravel orderby 与 groupby sql,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41094218/