How to Fetch Specific Column Values from Any Collection in Magento 2

In this tutorial, I’ll demonstrate how to fetch specific column values from a collection, using a practical example with Magento 2’s Vendor module.

Working with collections is a common task in Magento 2 development. Collections allow developers to retrieve data from the database in a structured way.

Practical Use Cases

The ability to fetch specific column values is useful in many scenarios:

• Retrieving product SKUs from a product collection.
• Extracting customer emails for targeted marketing.
• Generating reports by pulling specific attributes from orders or invoices

Example

$collection = $om->create(
  "Jigar\CustomCollectionDemo\Model\ResourceModel\Vendor\Collection"
);

$collection->addAttributeToFilter("group_id", [
  "eq" => 33
]);

//feteching column values by specifying key
$customerIds = $collection->getColumnValues("user_customer_id");

//print the output array
print_r($customerIds);

Above code demonstrates how to fetch the user_customer_id column values from a custom vendor collection, filtered by a specific group_id.

Running this code will display the desired customer IDs in array format.

Output

Array
(
    [0] => 8208
    [1] => 8391
    [2] => 8394
    [3] => 8397
    [4] => 8400
    [5] => 8403
    [6] => 8406
    [7] => 8409
    [8] => 8412
    [9] => 8415
)

Fetching specific column values from a collection in Magento 2 is a straightforward yet powerful capability. Whether you’re working on product data, customer records, or custom entities, this approach simplifies the process and keeps your code clean.

That’s it for this tutorial, see you soon in the next blog,

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