postgresql7.1 select content_item__set_live_revision(:revision_id); select content_item__set_live_revision(preamble.id) from cr_wp_slides_preamble preamble where preamble.slide_id = :revision_id; select content_item__set_live_revision(postamble.id) from cr_wp_slides_postamble postamble where postamble.slide_id = :revision_id; select content_item__set_live_revision(bullets.id) from cr_wp_slides_bullet_items bullets where bullets.slide_id = :revision_id;