postgresql7.4 SELECT l.lab_id, l.name AS lab_name, l.instructor_id, to_char(l.start_date, 'YYYY') AS year FROM lrc_lab l, lrc_lab_student_map s WHERE s.lab_id = l.lab_id AND l.lab_id = :lab_id AND s.user_id = :author_id SELECT t.template_id, t.name, t.description AS template_desc FROM lrc_template t, lrc_lab_template_map m WHERE m.lab_id = :lab_id AND m.template_id = t.template_id