29 lines
620 B
MySQL
29 lines
620 B
MySQL
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DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`ticketCollection_afterDelete`
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AFTER DELETE ON `ticketCollection`
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FOR EACH ROW
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BEGIN
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DECLARE vSalesRemaining INT;
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SELECT count(*) INTO vSalesRemaining
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FROM vn.ticketCollection tc
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JOIN sale s ON s.ticketFk = tc.ticketFk
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WHERE collectionFk = OLD.collectionFk
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AND tc.id != OLD.id;
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IF NOT vSalesRemaining THEN
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DELETE FROM vn.collection WHERE id = OLD.collectionFk;
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ELSE
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UPDATE vn.collection
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SET saleTotalCount = vSalesRemaining
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WHERE id = OLD.collectionFk;
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END IF;
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END$$
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DELIMITER ;
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