Laravel 4 - Union + orederBy 结果错误查询

Posted 2023-02-25

【中文标题】Laravel 4 - Union + orederBy 结果错误查询

【英文标题】：Laravel 4 - Union + orederBy results with the wrong query

【发布时间】：2014-10-18 21:02:42

【问题描述】：

我尝试使用联合从 2 个表中提取数据，并通过“created_at”DESC 对它们进行排序。但由于某种原因，使用错误的查询编写 ->orderBy 结果 - 我在第一个查询中而不是在它们之外有 created_at。

代码：

$recipes = DB::table("recipes")->select("id", "title", "user_id", "description", "created_at") ->where("user_id", "=", $id);
    $posts = DB::table("posts")->select("id", "title", "user_id", "content", "created_at")
                    ->where("user_id", "=", $id);

    $items = $posts->union($recipes);
    $items = $items->orderBy("created_at", "DESC")->get();

我得到的查询：

(select id, title, user_id, content, created_at from posts where user_id = '102' order by created_at desc) union (select id, title, user_id, description, created_at from recipes where user_id = '102')

我希望得到的查询：

(select id, title, user_id, content, created_at from posts where user_id = '102') union (select id, title, user_id, description, created_at from recipes where user_id = '102') order by created_at 描述

知道为什么吗？

我的laravel版本是：V4.2.8

相关话题：https://github.com/laravel/framework/pull/3901

感谢您的帮助！

【参考方案1】：

在控制器中

use DB;

在控制器函数内部

$items=DB::select('select id, title, user_id, content, created_at from posts where user_id =? union  select id, title, user_id, description, created_at from recipes where user_id = ? order_by created_at desc',[$id,$id]);