SELECT id, field_id, value
FROM frxq5_djc2_items_extra_fields_options
WHERE field_id in (5,6,8)
UNION (
SELECT id, field_id, value
FROM frxq5_djc2_items_extra_fields_values_text
WHERE field_id in (5,6,8)
GROUP BY field_id, value
ORDER BY field_id asc)
