how to make trigger in phpmyadmin
delimiter //
CREATE TRIGGER removeforeing
BEFORE DELETE ON products
FOR EACH ROW BEGIN
DELETE FROM sales_details WHERE product_code = OLD.product_code;
END//
delimiter ;how to make trigger in phpmyadmin
delimiter //
CREATE TRIGGER removeforeing
BEFORE DELETE ON products
FOR EACH ROW BEGIN
DELETE FROM sales_details WHERE product_code = OLD.product_code;
END//
delimiter ;how to make trigger in phpmyadmin
ALTER TABLE sales_details
ADD FOREIGN KEY fk_product_code(product_code)
REFERENCES products(product_code)
ON DELETE CASCADE;Create Trigger in phpMyAdmin
CREATE TABLE contacts
( contact_id INT(11) NOT NULL AUTO_INCREMENT,
last_name VARCHAR(30) NOT NULL,
first_name VARCHAR(25),
birthday DATE,
CONSTRAINT contacts_pk PRIMARY KEY (contact_id)
);Copyright © 2021 Codeinu
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