salix/db/routines/vn/triggers/invoiceIn_afterUpdate.sql

DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`invoiceIn_afterUpdate`
	AFTER UPDATE ON `invoiceIn`
	FOR EACH ROW
BEGIN
	IF NEW.issued != OLD.issued    
		OR NEW.currencyFk != OLD.currencyFk THEN

		UPDATE invoiceInTax iit
				JOIN invoiceIn ii ON ii.id = iit.invoiceInFk
				LEFT JOIN referenceRate rr ON rr.dated = ii.issued
					AND rr.currencyFk = ii.currencyFk 
			SET iit.taxableBase = IF(iit.foreignValue IS NULL, iit.taxableBase, iit.foreignValue / rr.value)
			WHERE ii.id = NEW.id;
		
		UPDATE invoiceInDueDay iidd
				JOIN invoiceIn ii ON ii.id = iidd.invoiceInFk
				LEFT JOIN referenceRate rr ON rr.dated = ii.issued
					AND rr.currencyFk = ii.currencyFk 
			SET iidd.amount = IF(iidd.foreignValue IS NULL, iidd.amount, iidd.foreignValue / rr.value)
			WHERE ii.id = NEW.id;    
        
    END IF;

END$$
DELIMITER ;