SELECT id FROM `#__cck_store_form_categ` WHERE `cat_kat` = '31' AND ( `cat_pkat` = '7' OR `cat_pkat` = '' ) AND ( `cat_par0` = '' OR `cat_par0` IS NULL OR `cat_par0` = 'Уголок' ) AND ( `cat_par3` = '' OR `cat_par3` IS NULL OR `cat_par3` = 'Пластик' ) AND ((`cat_pkat` IS NOT NULL AND `cat_pkat` <> '') OR (`cat_par0` IS NOT NULL AND `cat_par0` <> '') OR (`cat_par3` IS NOT NULL AND `cat_par3` <> ''))