orderBy在Laravel 5中不起作用 [英] orderBy is not working in Laravel 5

问题描述

我正在使用以下查询. orderBy 在下面的查询中不起作用.此查询在localhost中运行，但在Online Server中不运行.

I am using the below query. orderBy is not working in below query. This query is working in localhost but it is not working in Online Server.

return DB::table('reports')
        ->leftJoin('sources', 'reports.report_source_id', '=', 'sources.id')
        ->select('*')
        ->orderBy('report_id', 'desc')
        ->take(10)
        ->get();

推荐答案

尝试为每个表设置一个别名，然后在orderBy上使用所需的别名

Try setting an alias for each table and then using the required alias on the orderBy

如果两个表中都有一个report_id，它将不知道要使用哪个，并且在查找时可能会引发错误.

If there is a report_id in both tables it will not know which one to use and is probably throwing an error if you look for it.

return DB::table('reports as r')
    ->leftJoin('sources as s', 'r.report_source_id', '=', 's.id')
    ->select('*')
    ->orderBy('r.report_id', 'desc')
    ->take(10)
    ->get();

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