Lavarel sql查詢..如果條件在哪裏

Question

我剛開始學習Laravel並將常規PHP代碼轉換爲Laravel。 我需要在Laravel中執行此查詢，但失敗。

SELECT sum(qty_del) as delivery from delivery_sap a where YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017 

這是我想出來的，但它失敗了。

$data = DB::table('delivery_sap') 
      ->select(DB::raw('sum(qty_del) as delivery')) 
      ->whereRaw('YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017'); 

基於以下

$data = DB::table('delivery_sap') 
     ->select(DB::raw('sum(qty_del) as delivery')) 
     ->whereRaw('YEAR(bill_date) + IF(MONTH(bill_date)>6, 1, 0) = 2017') 
     ->first(); 

答案從GET（改變）

更正查詢第一，因爲我想它返回的一行

Answer 1

您可以通過查詢轉儲生成的查詢並將其與原始查詢進行比較：

use Illuminate\Support\Facades\DB; 

$query = DB::table('delivery_sap') 
    ->select(DB::raw('sum(qty_del) as delivery')) 
    ->whereRaw('YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017'); 

dd($query->toSql()); 

返回：

"select sum(qty_del) as delivery from `delivery_sap` where YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017" 

這與您的原始查詢幾乎完全相同。您需要連接呼叫與最後的get()以檢索結果：

$data = DB::table('delivery_sap AS a') 
    ->select(DB::raw('sum(qty_del) as delivery')) 
    ->whereRaw('YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017') 
    ->get(); // <= Here