select template_name as old_template from
ec_templates, ec_category_template_map m
where ec_templates.template_id = m.template_id
and m.category_id=:category_id
insert into ec_category_template_map (category_id, template_id) values (:category_id, :template_id)
update ec_category_template_map set template_id=:template_id where category_id=:category_id
select template_name from ec_templates where template_id=:template_id
select category_name from ec_categories where category_id=:category_id