在 Laravel 中如何在查询中不带参数的 groupBy Url

Posted 2023-02-22

【中文标题】在 Laravel 中如何在查询中不带参数的 groupBy Url

【英文标题】：In Laravel how to groupBy Url without parameter in the query

【发布时间】：2016-11-10 18:08:06

【问题描述】：

以下查询包含大量连接表和 DB::raw 查询，按预期工作。我想 groupBy 一个“登陆”，它是表中存储了 URL 的字段。 但我想 groupBy URL 不带参数。我怎样才能做到这一点？

下面的查询尝试使用 SUBSTRING_INDEX 但没有奏效。

$adverts = DB::table('adverts')                     
              ->select(DB::raw('count(*) as total'),DB::raw('(SELECT DATE_FORMAT(max(instances.date), \'%d-%m-%Y\') FROM instances WHERE instances.ad_uid = adverts.ad_uid ORDER BY id DESC limit 1) AS Last_seen_date,'
                      . '(SELECT instances.country FROM instances WHERE instances.ad_uid = adverts.ad_uid ORDER BY id DESC limit 1) AS country,'
                      . '(SELECT advertsstorage.filename FROM advertsstorage where uid_dir = adverts.ad_uid ORDER BY id ASC limit 1) AS filename,'
                      .'(SELECT IF(ext = \'jpeg\', CONCAT(fullpath, \'_1.\', ext), (CONCAT(fullpath,\'.\',ext))) as fullpath FROM advertsstorage where uid_dir = adverts.ad_uid ORDER BY id ASC limit 1)as fullpath, adverts.*'))
               ->join('domains','adverts.domain', '=' ,'domains.domain') 
               ->join('advertiser_domains','domains.id', '=' ,'advertiser_domains.domain_id')
                 ->join('advertisers','advertiser_domains.advertiser_id', '=' ,'advertisers.u_id')   
              ->where('advertisers.u_id', '=',$advertiserID)
              ->orderBy('Last_seen_date', 'DESC')
              ->groupBy(DB::raw("SUBSTRING_INDEX(adverts.landing,'?',1)"))                    
             ->get(); 

【问题讨论】：

+1。你有没有想过如何通过参数使用 Laravel groupBy？我现在被同样的问题阻止了。谢谢！

【参考方案1】：

我想我已经明白了，现在 Laravel 不提供 groupBy 的参数化对我来说是有意义的。

首先，我需要复习一下mysql Group By。

select 中提到的每个字段都需要与您在groupBy 中输入的内容兼容。

你可以使用： ->groupBy(DB::raw('some_alias'))

就我而言：

$statsQuery = DB::table('contacts')
                ->selectRaw("SUBSTR(DAYNAME(CONVERT_TZ(created_at, 'UTC', ?)), 1, 3) AS 'DayOfWeek', HOUR(CONVERT_TZ(created_at, 'UTC', ?)) AS 'Hour', COUNT(id) AS 'CallsScheduled'", [$reportingClientTimeZone, $reportingClientTimeZone])
                ->whereIn('adId', $adIds)
                ->whereRaw("CONVERT_TZ(created_at, 'UTC', ?) >= STR_TO_DATE(?, '%Y-%m-%d')", [$reportingClientTimeZone, $startDate]) //https://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_convert-tz
                ->whereRaw("CONVERT_TZ(created_at, 'UTC', ?) < DATE_ADD(STR_TO_DATE(?, '%Y-%m-%d'), INTERVAL 1 day)", [$reportingClientTimeZone, $endDate]) //Given a certain endDate (which begins at midnight), only include results LESS THAN 1 day after that midnight
                ->whereNotNull('clarityCallTimeUtc')
                ->groupBy(DB::raw("DayOfWeek, Hour"));

看看COUNT() 是我唯一的聚合函数吗？我的select 中提到的唯一其他字段是我在groupBy 中使用的（的别名）。

我认为这对我有用。