I have a custom table user_product_table with a field sku(this field join to product collection) and user. How can I join this table with product collection, so that I don't have to loop my custom collection to get product in each row.

My $userCollection:

 $userCollection = $this->_userProductFactory->create()
        ->addFieldToFilter('user', 2);

My product Collection:

$productColelction = $this->_productCollectionFactory->create()

I would like to have final collection both my custom table fields and selected product attributes.

1 Answer 1


We can use the join like this:

            $joinConditions = 'u.sku = e.sku';

                ['u' => $productColelction->getTable('user_product_table')],

Multi conditions:

        $joinConditions[] = "u.sku = e.sku";

        $joinConditions[] = "e.type_id= 'simple' ";

        $joinConditions = implode(
            ' AND ', $joinConditions
  • 1
    Thank you, One question what if the user_product_table contain multiple same sku's? Is it also possible to join? Commented Dec 9, 2016 at 9:26
  • 2
    Yes, it is. We can join. Commented Dec 9, 2016 at 9:53
  • how would you add a join condition that was based off a variable generated earlier, for example i have a set type_id i'm looking for each time this module runs and so my variable is called $typeid would it be "e.type_id= ' ".$typeid." ' ";
    – John
    Commented May 30, 2018 at 6:44
  • @John can you ask a new question and link to my answer for a reference? I will take a look. Commented May 30, 2018 at 6:49
  • i think i've found something i'll report back to you if it works
    – John
    Commented May 30, 2018 at 7:11

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