基於另一列的總和列laravel

我想總結一列AMOUNT，結果是填充列BALANCE。如果列類型是DEBIT，那麼它將總和..但是如果列類型是KREDIT，那麼它將是負的。這是表table image 基於另一列的總和列laravel

創建該表中，我使用這個查詢中laravel控制器：

$get_result  = DB::select(DB::raw("SELECT statement.created_at, statement.descript, statement.amount, statement.sign, statement.reference 
                FROM statement,lender 
                WHERE statement.created_at BETWEEN DATE_ADD(' $date_from ',INTERVAL 1 DAY) 
                AND '$date_to' 
                AND statement.lender_id = lender.id 
                AND lender.user_id= $userId "));

和我用鑑於此代碼來顯示數據：

<thead> 
           <tr class="txtcenter"> 
            <th class="all">Date </th> 
            <th class="all">Description </th> 
            <th class="all">Amount</th> 
            <th class="all">Type</th> 
            <th class="all">Reference</th> 
            <th class="all">Balance</th> 
           </tr> 
          </thead> 
          <tbody>@foreach($get_result as $statement) 
            <tr class="accordion"> 
             <td>{{SUBSTR($statement->created_at,0,10) }}</div> 
             <td>{{$statement->descript}} </div> 
             <td>IDR {{number_format($statement->amount, 0, '.', ',')}} </div> 
             <td>{{ $statement->sign }} </div> 
             <td>{{ $statement->reference }} </div> 
             <td> </div> 
            </tr>@endforeach 
          </tbody>

我不知道如何使適當的代碼來計算這一切。請幫幫我。在此先感謝

來源

2016-09-30 arbong

嘗試此查詢

SELECT statement.created_at, statement.descript, statement.amount, statement.sign, statement.reference, (sum(case when statement.descript = 'Credit' then statement.amount else 0 end) - sum(case when statement.descript = 'Debit' then statement.amount else 0 end)) balance FROM statement,lender WHERE statement.created_at BETWEEN DATE_ADD(' $date_from ',INTERVAL 1 DAY) AND '$date_to' AND statement.lender_id = lender.id AND lender.user_id= $userId

來源

2016-09-30 07:38:43

你的意思是替換上面的查詢嗎？得到這個錯誤：＃1064 - 你的SQL語法有錯誤;檢查與您的MariaDB服務器版本相對應的手冊，以便在'descript ='Credit'then statement.amount else 0 end'附近使用正確的語法 - （sum（case when line =「Deb'at line 2 – arbong

what is the數據庫字段名稱您在哪裏存儲了「借方」/「貸方」值？ –

數據庫字段名稱其中存儲了「借方」/「貸方」值是描述 – arbong

「經典」的方式爲這個（它是一個運行總和的特殊情況）是使用相關查詢：

SELECT statement.created_at, statement.descript, statement.amount, statement.REFERENCE, 
    (SELECT 
     SUM(CASE WHEN t2.descript = 'Debit' THEN t2.amount 
       WHEN t2.descript = 'Credit' THEN -t2.amount ELSE 0 END) 
     FROM statement t2 
     WHERE t2.created_at <= statement.created_at 
    ) AS Balance 
FROM statement 
ORDER BY statement.created_at ;

或使用像這樣的sql變量：

SET @csum := 0; 
SELECT statement.created_at, statement.descript, statement.amount, 
     statement.REFERENCE, 
    (CASE WHEN statement.descript = 'Debit' THEN 
      (@csum := @csum + statement.amount) 
      WHEN statement.descript = 'Credit' THEN 
      (@csum := @csum - statement.amount) 
     ELSE 0 
    END) as Balance 
FROM statement 
ORDER BY statement.created_at ;

請檢查sqlFiddle以獲得有效的代碼 - 不包括貸方加入和您的其他條件。

來源

2016-09-30 23:51:20 Paschi

基於另一列的總和列laravel

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