18 lines
422 B
SQL
18 lines
422 B
SQL
DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_beforeUpdate`
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BEFORE UPDATE ON `itemShelving`
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FOR EACH ROW
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BEGIN
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SET NEW.editorFk = account.myUser_getId();
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IF NEW.userFk IS NULL THEN
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SET NEW.userFk = account.myUser_getId();
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END IF;
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IF (NEW.visible <> OLD.visible) THEN
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SET NEW.available = GREATEST(NEW.available + NEW.visible - OLD.visible, 0);
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END IF;
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END$$
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DELIMITER ;
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