Laravel查询两列之和之差

Posted 2023-02-16

【中文标题】Laravel查询两列之和之差

【英文标题】：Laravel query with difference of sum of two columns

【发布时间】：2021-09-26 19:57:08

【问题描述】：

我有一个似乎有一些问题的 Laravel 查询。它正在拾取所有正确的东西，但不计算两个字段之和的差。

JournalLine::join('accounts','accounts.id','account_id')
->select('accounts.name','accounts.code','accounts.id','accounts.type')
->whereHas('account_fk',function ($query) 
    $query->where('type','Liability');
)
->whereHas('journal_fk',function ($query) 
    $query->where('date', '<=', $this->as_of_date);
)
->selectRaw("SUM(credit) as credit")
->selectRaw("SUM(debit) as debit")
->selectRaw("SUM(credit) - SUM(debit) as amount")
->groupBy('account_id')
->get()->toArray()

它使贷方和借方值正确。但是平衡是错误的。 这有问题 - selectRaw("SUM(credit) - SUM(debit) as amount") 有人可以建议吗？我需要借方总和和贷方总和的余额。

【参考方案1】：

有 2 个选择语句可能是你必须做的 1 像这样

JournalLine::join('accounts','accounts.id','account_id')
->selectRaw('accounts.name , accounts.code,accounts.id,accounts.type,SUM(accounts.credit) - SUM(accounts.debit) as amount')
->whereHas('account_fk',function ($query) 
    $query->where('type','Liability');
)
->whereHas('journal_fk',function ($query) 
    $query->where('date', '<=', $this->as_of_date);
)
->groupBy('account_id')
->get();

【讨论】：

这不起作用。我的查询实际上有三个语句。前两个工作正常，带来了聚合。第三个没用。 ->selectRaw("SUM(credit) as credit") ->selectRaw("SUM(debit) as debit") ->selectRaw("SUM(credit) - SUM(debit) as amount")

你试过这个代码吗？你得到了什么错误？

我稍微修改为 ->selectRaw('accounts.name,accounts.code,accounts.id,accounts.type,SUM(accounts.credit) as credit,SUM(accounts.debit) as debit,SUM(accounts.credit) - SUM(accounts.debit) as amount') 并给出以下结果 - prnt.sc/1cz53qy。如果 Debit 为 null，则抛出 null 并且不将 null/no 值视为 0

【参考方案2】：

你可以使用它：

JournalLine::join('accounts','accounts.id','account_id') 
->select([
'accounts.name',
'accounts.code',
'accounts.id',
'accounts.type',
"SUM(credit) as credit",
"SUM(debit) as debit",
"(credit - debit) as amount"
])
->whereHas('account_fk',function ($query) 
    $query->where('type','Liability');
)
->whereHas('journal_fk',function ($query) 
    $query->where('date', '<=', $this->as_of_date);
)
->groupBy('account_id')
->get()->toArray()

【参考方案3】：

一张表中两列的差值之和

$saleEarning     = Order::where("type","sale")->sum(DB::raw('totalAmt - adminCommision'));


Hope it help you.