[Resolved] Database Errors in Log

Hi
I am getting the following database errors in my log. Can you let me know the resolution please:

1.
[10-Dec-2012 19:00:48 UTC] 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 taxonomy='post_tag'' at line 1 for query SELECT term_taxonomy_id FROM wp_term_taxonomy WHERE term_id= AND taxonomy='post_tag' made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/canvas/archive.php'), get_footer, locate_template, load_template, require_once('/themes/canvas/footer.php'), wp_footer, do_action('wp_footer'), call_user_func_array, SitePressLanguageSwitcher->language_selector_footer, icl_get_languages, SitePress->get_ls_languages

2.
[11-Dec-2012 08:11:28 UTC] WordPress database error Unknown column 'wp_posts.post_type' in 'where clause' for query SELECT wp_comments.* FROM wp_comments JOIN wp_icl_translations t ON wp_comments.comment_post_ID = t.element_id
AND t.element_type='post_post' AND t.language_code='th' JOIN wp_icl_translations tc ON wp_comments.comment_ID = tc.element_id AND tc.element_type='comment' AND tc.language_code='th' WHERE comment_post_ID = '225' AND comment_approved = '1' AND wp_posts.post_type NOT IN ('shop_order') ORDER BY comment_date_gmt DESC LIMIT 10 made by require('wp-blog-header.php'), wp, WP->main, WP->query_posts, WP_Query->query, WP_Query->get_posts