Getting additional columns from sql

You need to add another join:

 INNER JOIN $wpdb->postmeta rate_review ON p.ID = rate_review.post_id

Add the condition to your where clause:

 AND rate_review.meta_key = 'rate_review'

Now you can add it to your SELECT:

 rate_review.meta_value AS rate_review

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