是否可以在Laravel中加入如下table？

Question

如何在 laravel 中连接两个具有多列的表，类似于下面的查询：

SELECT
    *
FROM
    tab1 AS e
INNER JOIN
    tab2 AS v ON v.Case1 = e.Case1 and v.id = e.id;

我在 google 中搜索过，但找不到任何方法。

这是我目前试过的代码：

DB::table('tab1 as e')
    ->join('tab2 as v', 'v.Case1', '=', 'e.Case1', 'and', 'v.id', '=', 'e.id')
    ->get();

Answer 1

您尝试过以下方法吗？

DB::table('tab1 as e')
->join('tab2 as v', function($join)
{
   $join->on('v.Case1', '=', 'e.Case1');
   $join->on('v.id','=', 'e.id');

})
->get();

Answer 2

这就是您必须绕过它的方式，它必须有效。以我做的这个例子为例，它有效

 $categ =  DB::connection('mysql')->table('SubCategories')
                 ->leftJoin('Categories', 'Categories.id', '=', 'SubCategories.categories_id')
            ->select('SubCategories.id','SubCategories.Code','SubCategories.Name','SubCategories.Description','Categories.Name as CategoryName'
              )
            ->get();

DB::connection('your connection from app.php file')table('tab1 as e')
    ->join('tab2 as v', 'v.Case1', '=', 'e.Case1', 'and', 'v.id', '=', 'e.id')
    ->Select('your select statement'),
    ->get();

是否可以在Laravel中加入如下table？

Is it possible to join table as below in Laravel?

mysql

laravel

laravel-5.6