laravel join关联查询代码实例_PHP教程

laravel join关联查询代码实例

2021-11-08 15:23Martin Wu PHP教程

这篇文章主要介绍了laravel join关联查询代码实例，join联查是写sql查询的时候常用也是高效的一种查询，文中是结合laravel框架来使用联查，有感兴趣的同学可以学习下

laravel join关联查询

1、两表关联

				?

									$fbaInventoryTb = (new \App\Model\Amz\Fba\InventoryReport)->getTable();

									$productTb = (new \App\Model\Amz\Product)->getTable();

									$twInventoryTb = (new \App\Model\TWUsa\TwusaInventory)->getTable();

									$qry = \DB::table($fbaInventoryTb);

									  $qry->select($fbaInventoryTb.'.*')

									   ->where($fbaInventoryTb.'.ec_id',1)

									   ->leftjoin($productTb, $productTb.'.sku', '=', $fbaInventoryTb.'.sku')

									   ->addSelect($productTb.'.id as goods_id',$productTb.'.sku as mfn', $productTb.'.ec_id as pro_ec_id');

									//  ->where($productTb.'.ec_id',1); //不应该在此处排除 product 表的ec_id

									//  return $qry->toSql();

									  $res = $qry->get()->whereIn('pro_ec_id',[1, null] );//leftJion 最后排除不符合条件的

2、三表关联

				?

									$qry = \DB::table($twInventoryTb);

									  $qry->select($twInventoryTb.'.*')

									   ->leftjoin($fbaInventoryTb, $fbaInventoryTb.'.fnsku', '=', $twInventoryTb.'.product_sn')

									   ->addSelect($fbaInventoryTb.'.ec_id')

									   ->where($fbaInventoryTb.'.ec_id',1);

									  $qry->LeftJoin($productTb, $productTb.'.sku', '=', $fbaInventoryTb.'.sku')

									//   ->where($productTb.'.ec_id',1)

									   ->addSelect($productTb.'.id as goods_id', $productTb.'.sku as mfn', $productTb.'.ec_id as pro_ec_id');

									  $res = $qry->get()->whereIn('pro_ec_id', [1, null]);