wordpress - trying to use count() inside $wpdb->get_results but returns empty result

Question

I am trying to get how many rows contains the same product id in this table. I mean how many times a product is repeated in this table for example product id = 1000 and number of instances is 3. This is my code:

$prod_id_query = "SELECT prod_id , COUNT(prod_id)    AS repeat_num  FROM {$wpdb->wlfmc_items} GROUP BY prod_id  ";
$prods_ids = $wpdb->get_results($prod_id_query);      
print_r($prods_ids);  

but the result is empty. It returns empty array.

Answer 1

thanks for everyone tried to help i found that the problem was with (AS repeat_num FROM) the corrrection is the semicolon >> ( AS 'repeat_num' FROM )

iam using mariaDB

now it's working thanks