Question

我有这样的查询：

    select * from `research_purchases` left join `company_research_articles`
 on `research_purchases`.`researchable_id` = `company_research_articles`.`id` 
and `research_purchases`.`researchable_type` = 'Modules\Analystsweb\Entities
\CompanyResearchArticle'

research_purchases表结构如下：

它不会过滤“Modules \ Analystsweb \ Entities \ CompanyResearchArticle”部分并给我整个结果。这是我被卡住的部分。

最初我想运行一个Laravel查询。查询是这样的：

$sales = DB::table('research_purchases')->select(DB::raw('count(research_purchases.id) as sales_count, research_purchases.created_at'))->leftJoin('company_research_articles', function ($join) {
                                        $join->on('research_purchases.researchable_id', '=', 'company_research_articles.id')
                                            ->where('research_purchases.researchable_type', '=', 'Modules\Analystsweb\Entities\CompanyResearchArticle');
                                    })
                                    ->where('research_purchases.created_at', '>', Carbon::now()->subMonths(11))
                                    ->groupBy(DB::raw("MONTH(research_purchases.created_at)"))
                                    ->get();

任何建议都将不胜感激。谢谢。

Answer 1

哦，亲爱的，你应该把它放在条件

如果你想左边加入关于右表条件的所有数据，那么你把它放在加入

select * from `research_purchases` left join `company_research_articles`
 on `research_purchases`.`researchable_id` = `company_research_articles`.`id` 

where  `research_purchases`.`researchable_type` = 'Modules\Analystsweb\Entities
\CompanyResearchArticle'

Answer 2

我还不能发表评论，但你不是指在你的查询中用WH而不是AND吗？

Answer 3

请尝试whereColumn。

$sales = DB::table('research_purchases')->select(DB::raw('count(research_purchases.id) as sales_count, research_purchases.created_at'))->leftJoin('company_research_articles', function ($join) {
               $join->on('research_purchases.researchable_id', '=', 'company_research_articles.id');
        })->whereColumn([
                    ['research_purchases.researchable_type', '=', 'Modules\Analystsweb\Entities\CompanyResearchArticle'],
                    ['research_purchases.created_at', '>', Carbon::now()->subMonths(11)]
        ])->groupBy(DB::raw("MONTH(research_purchases.created_at)"))
                             ->get();

或两者都在哪一边

$sales = DB::table('research_purchases')->select(DB::raw('count(research_purchases.id) as sales_count, research_purchases.created_at'))->leftJoin('company_research_articles', function ($join) {
                                        $join->on('research_purchases.researchable_id', '=', 'company_research_articles.id')
                                        ->where(
                    'research_purchases.researchable_type', '=', 'Modules\Analystsweb\Entities\CompanyResearchArticle')
                             ->where('research_purchases.created_at', '>', Carbon::now()->subMonths(11))
                )
})->groupBy(DB::raw("MONTH(research_purchases.created_at)"))
                                    ->get();

MySQL Query不检查条件

3 个答案: