DELIMITER $$
$$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`getTaxBases`()
BEGIN

/*	Calcula y devuelve en número de bases imponibles postivas y negativas
*	Requiere la tabla temporal tmp.ticketToInvoice(id)
*
*	returns tmp.taxBases
*/

	CREATE OR REPLACE TEMPORARY TABLE tmp.ticket
		(KEY (ticketFk))
		ENGINE = MEMORY
		SELECT id ticketFk
			FROM tmp.ticketToInvoice;

	CALL ticket_getTax(NULL);

	DROP TEMPORARY TABLE IF EXISTS tmp.taxBases;
	CREATE TEMPORARY TABLE tmp.taxBases
		ENGINE = MEMORY
		SELECT
			    SUM(CASE WHEN taxableBase > 0 THEN 1 ELSE 0 END) as positive,
				SUM(CASE WHEN taxableBase < 0 THEN 1 ELSE 0 END) as negative
			FROM(
				SELECT SUM(taxableBase) as taxableBase
					FROM tmp.ticketTax
					GROUP BY pgcFk
				) t;

END$$
DELIMITER ;