22 lines
414 B
MySQL
22 lines
414 B
MySQL
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DROP TRIGGER IF EXISTS `vn2008`.`ArticlesBeforeInsert`;
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DELIMITER $$
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USE `vn2008`$$
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CREATE DEFINER=`root`@`%` TRIGGER `vn2008`.`ArticlesBeforeInsert`
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BEFORE INSERT ON `Articles` FOR EACH ROW
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BEGIN
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DECLARE vDensity DOUBLE;
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DECLARE vInsertId INT;
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IF NEW.density IS NULL
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THEN
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SELECT density INTO vDensity
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FROM Tipos WHERE tipo_id = NEW.tipo_id;
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SET NEW.density = vDensity;
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END IF;
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END$$
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DELIMITER ;
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