如何在laravel中使用聯合查詢

我在覈心php中有一個查詢，但我想轉換成Laravel，我正在嘗試這樣做，但那是給出錯誤。我不知道，我可以利用這個這裏的確切方法的核心查詢如何在laravel中使用聯合查詢

select mon,year, 
     combo, 
     registered, 
     forwardedbycmo, 
     clarification, 
     noaction, 
     disposed,mon_srno,undertaken 
from monthly_activities 
union 
select extract('month' from actiondate) as mon,extract('year' from actiondate) as year, 
     extract('year' from actiondate)|| '-' ||to_char(to_timestamp (extract('month' from actiondate)::text, 'MM'), 'TMMon') as combo, 
     sum(case when actioncode = '00' then 1 else 0 end) as registered, 
     sum(case when actioncode = '4T' and fromorg='CMOFF' then 1 else 0 end) as forwardedbycmo, 
     sum(case when actioncode = '4D' and fromorg='CMOFF' then 1 else 0 end) as clarification, 
     sum(case when actioncode = '10' then 1 else 0 end) as noaction, 
     sum(case when actioncode = '50' then 1 else 0 end) as disposed,null as mon_srno, 
     sum(case when actioncode = '40' and fromorg='CMOFF' then 1 else 0 end) as undertaken 

from actionhistory where extract(month from actiondate)=extract(month from current_date) 
and extract(year from actiondate)=extract(year from current_date) 
group by mon,year order by year,mon;

和laravel查詢

$first = MonthlyActivity::select('mon','year','combo','registered','forwardedbycmo', 
     'clarification', 
     'noaction', 
     'disposed','mon_srno','undertaken')->get(); 

     $second = MonthlyActivity::select(extract('month' from actiondate) as mon,extract('year' from actiondate) as year, 
     extract('year' from actiondate)|| '-' ||to_char(to_timestamp (extract('month' from actiondate)::text, 'MM'), 'TMMon') as combo, 
     sum(case when actioncode = '00' then 1 else 0 end) as registered, 
     sum(case when actioncode = '4T' and fromorg='CMOFF' then 1 else 0 end) as forwardedbycmo, 
     sum(case when actioncode = '4D' and fromorg='CMOFF' then 1 else 0 end) as clarification, 
     sum(case when actioncode = '10' then 1 else 0 end) as noaction, 
     sum(case when actioncode = '50' then 1 else 0 end) as disposed,null as mon_srno, 
     sum(case when actioncode = '40' and fromorg='CMOFF' then 1 else 0 end) as undertaken 

from actionhistory where extract(month from actiondate)=extract(month from current_date) 
and extract(year from actiondate)=extract(year from current_date))->groupBy('mon','year')->orderBy('year','mon')->get(); 
$result = $first->union($second); 

//$users = DB::table('users')->whereNull('last_name')->union($first)->get(); 
     return view('show',['monthly' => $result]);

來源

2017-03-28 Nisha Garg

這是一個非常醜陋的查詢..我真的認爲它可以通過更改db架構來簡化..你應該考慮.. –

@MateiMihai：我無法改變db結構tat已經被我詛咒了。請讓我知道是否有任何方法來執行這個查詢，因爲它是在laravel？ –

我對你的建議是重構這個查詢構建器，並使其看起來更好:) – Beginner

根據你的問題的標題，here是聯合參考Laravel。但看到你的問題，因爲你已經使用原生的SQL函數，如extract()，我會建議你運行查詢作爲原始查詢。

對於擡起頭來：

您使用：$var = DB::connection()->getPdo()->quote($var); 逃脫你正在使用的查詢任何變量。

準備好您的原始查詢，並把它像一個變量：

$query = 'SELECT ....';

然後運行它想：

$result = DB::select($query,[]);

不要忘了包括DB類在控制器的頂部：

use Illuminate\Support\Facades\DB;

對不起，我不能給你很多時間來爲你做一個laravel查詢，所以我在這裏建議whi ch可能會幫助你繼續下去。祝你好運！

來源

2017-03-28 08:28:39 Learner

$ var = DB :: connection（） - > getPdo（） - > quote（$ var）;我可以在控制器下使用這條線嗎？ –

沒問題。如果通過接受堆棧溢出的答案解決了問題，請考慮關閉此線程。謝謝。 – Learner

$ var = DB :: connection（） - > getPdo（） - > quote（$ var）;我可以在控制器下使用這條線嗎？ –

如何在laravel中使用聯合查詢

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