Get all Orders IDs from a product ID in Woocommerce

Updates:

• 2017 – SQL query changed to "SELECT DISTINCT" instead of "SELECT" to avoid duplicated Order IDs in the array (then no need of array_unique() to filter duplicates…).

• 2019 – Enabled product variation type support in the SQL Query

Then you can embed this in a custom function with $product_id as argument.
You will have to set inside it, the order statuses that you are targeting.

So here is the function that will do the job:

function get_orders_ids_by_product_id( $product_id ) {
    global $wpdb;
    
    // Define HERE the orders status to include in  <==  <==  <==  <==  <==  <==  <==
    $orders_statuses = "'wc-completed', 'wc-processing', 'wc-on-hold'";

    # Get All defined statuses Orders IDs for a defined product ID (or variation ID)
    return $wpdb->get_col( "
        SELECT DISTINCT woi.order_id
        FROM {$wpdb->prefix}woocommerce_order_itemmeta as woim, 
             {$wpdb->prefix}woocommerce_order_items as woi, 
             {$wpdb->prefix}posts as p
        WHERE  woi.order_item_id = woim.order_item_id
        AND woi.order_id = p.ID
        AND p.post_status IN ( $orders_statuses )
        AND woim.meta_key IN ( '_product_id', '_variation_id' )
        AND woim.meta_value LIKE '$product_id'
        ORDER BY woi.order_item_id DESC"
    );
}

This code goes in any php file.

This code is tested and works for WooCommerce version 2.5+, 2.6+ and 3+

---

USAGE EXAMPLES:

## This will display all orders containing this product ID in a coma separated string ##

// A defined product ID: 40
$product_id = 40;

// We get all the Orders for the given product ID in an arrray
$orders_ids_array = get_orders_ids_by_product_id( $product_id );

// We display the orders in a coma separated list
echo '<p>' . implode( ', ', $orders_ids_array ) . '</p>';