Database Error

I don’t know if I have already posted this, but I thought maybe I should repost
My website: maureencooke.com went down, and I couldn’t even log into the administrative section of the site – the dashboard.
However, I’ve addressed that problem, and I haven’t lost any data, but, for the life of me, I can’t get my site to go public.
Here’s the error I’m getting:

“wordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘AND meta_key = ‘wp_car_tag’ LIMIT 1′ at line 1 for query SELECT meta_value FROM wp_postmeta WHERE post_id = AND meta_key = ‘wp_car_tag’ LIMIT 1 made by require, require_once, include, get_footer, locate_template, load_template, require_once, wp_footer, do_action,”

Does anyone know how I can fix this?

Mfoley