Table 'howtoorg_openx.wp_term_relationships' doesn't exist : SELECT wp_term_relationships.object_id as post_id from wp_term_relationships, wp_terms,wp_term_taxonomy WHERE wp_term_taxonomy.term_id = wp_terms.term_id and wp_term_relationships.term_taxonomy_id=wp_term_taxonomy.term_taxonomy_id and wp_terms.term_id='10'