Question

我正在努力获得所有工作账单的收据和扣除总额。收据中有2个条目，金额为Rs.80,000和Rs.10,000。扣除中有2个条目，金额为Rs.500和Rs.100

我得到的结果是：扣除总额 - 1,200卢比（实际Rs600的两倍）总收入--1,80,000卢比（实际Rs.90,000的两倍）

我的Eloquent查询如下：

$bills = bills::leftjoin('receipts', 'receipts.billId', 'bills.billId')->leftjoin('deductions', 'deductions.billId', 'bills.billId')
                ->select('bills.billId', 'bills.billDate', 'bills.billNumber', 'bills.billStatus', 'bills.billAmount', DB::raw('SUM(deductions.deductionAmount) as totalDeductions'), DB::raw('SUM(receipts.receiptAmount) as totalReceipts'))
                ->groupBy('bills.billId', 'bills.billDate', 'bills.billNumber', 'bills.billStatus', 'bills.billAmount')
                ->where('bills.workId', $workId)
                ->get();

SQL小提琴链接 - http://www.sqlfiddle.com/#!9/cf46cb/1/0

Answer 1

如果删除分组和SUM，则可以看到返回的所有行，并且左连接导致重复错误：

SELECT `bills`.`billId`, `bills`.`billDate`, `bills`.`billNumber`, `bills`.`billAmount`,
        deductions.deductionAmount,
        receipts.receiptAmount
FROM `bills` left join `receipts` on `receipts`.`billId` = `bills`.`billId`
             left join `deductions` on `deductions`.`billId` = `bills`.`billId`
WHERE `bills`.`workId` = 6

你可以通过子查询避免这种情况，但我不知道如何用Eloquent做到这一点：

SELECT b.`billId`, b.`billDate`, b.`billNumber`, b.`billAmount`,
        (SELECT SUM(deductionAmount) FROM deductions WHERE BillID = b.BillId) as totalDeductions,
        (SELECT SUM(receiptAmount) FROM receipts WHERE BillID = b.BillId) as totalReceipts
FROM `bills` b
WHERE b.`workId` = 6

Answer 2

好的，这就是在Eloquent中的表现：

renderer.setStyle(document.documentElement, `--${cssVariableName}`, `${value}`);

使用左连接的Eloquent Query返回Laravel中实际值的总和的两倍

2 个答案: