How to retrieve user data based on role using SQL?

Add following in WHERE condition of your SQL query.

WHERE t1.meta_key = "<?php echo $wpdb->prefix; ?>capabilities" 
AND ( t1.meta_value LIKE '%ROLE_YOU_WANT_TO_FILTER%')

Let me know if it works for you or not.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)