Question

我刚开始学习Laravel并将常规PHP代码转换为Laravel。我需要在Laravel中执行此查询，但失败了。

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

这是我提出的，但它很糟糕。

$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');

根据以下答案更正了查询

$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();

从get（）更改为first，因为我希望它作为一行返回

Answer 1

您可以通过查询构建器转储生成的查询，并将其与原始查询进行比较：

它返回：

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());

这与您的原始查询几乎完全相同。您需要使用最终"select sum(qty_del) as delivery from `delivery_sap` where YEAR(a.bill_date) + IF(MONTH(a.bill_date)>6, 1, 0) = 2017"对调用进行链接以检索结果：

get()

Laravel sql查询..如果条件在Where中

1 个答案: