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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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