laravel join关联查询代码实例

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laravel join关联查询

1、两表关联

$fbaInventoryTb = (new AppModelAmzFbaInventoryReport)->getTable();
$productTb = (new AppModelAmzProduct)->getTable();
$twInventoryTb = (new AppModelTWUsaTwusaInventory)->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]);

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