1. PostgreSQL copy of all MySQL created and tested.\n 2. Purchase Orders and Sales Orders and stock level management added to MySQL, PostgreSQL, and server and front end code.

static/MySQL/367_tri_Shop_User_Basket.sql

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+
+# Shop Product Variation Link
+
+USE PARTSLTD_PROD;
+
+DROP TRIGGER IF EXISTS before_insert_Shop_User_Basket;
+DROP TRIGGER IF EXISTS before_update_Shop_User_Basket;
+
+
+DELIMITER //
+CREATE TRIGGER before_insert_Shop_User_Basket
+BEFORE INSERT ON Shop_User_Basket
+FOR EACH ROW
+BEGIN
+	IF NEW.created_on <=> NULL THEN
+		SET NEW.created_on = NOW();
+	END IF;
+    IF NEW.created_by <=> NULL THEN
+		SET NEW.created_by = CURRENT_USER();
+	END IF;
+END //
+DELIMITER ;
+
+
+DELIMITER //
+CREATE TRIGGER before_update_Shop_User_Basket
+BEFORE UPDATE ON Shop_User_Basket
+FOR EACH ROW
+BEGIN
+	IF NEW.id_change_set_user <=> OLD.id_change_set_user THEN
+		SIGNAL SQLSTATE '45000'
+        SET MESSAGE_TEXT = 'New change Set ID must be provided.';
+    END IF;
+    
+    INSERT INTO Shop_User_Basket_Audit (
+		id_item,
+        name_field,
+        value_prev,
+        value_new,
+        id_change_set_user
+    )
+    # Changed id_user
+	SELECT NEW.id_item, 'id_user', OLD.id_user, NEW.id_user, NEW.id_change_set_user
+		WHERE NOT OLD.id_user <=> NEW.id_user
+	UNION
+	# Changed id_product
+	SELECT NEW.id_item, 'id_product', OLD.id_product, NEW.id_product, NEW.id_change_set_user
+		WHERE NOT OLD.id_product <=> NEW.id_product
+	UNION
+	# Changed quantity
+	SELECT NEW.id_item, 'quantity', CONVERT(OLD.quantity, CHAR), CONVERT(NEW.quantity, CHAR), NEW.id_change_set_user
+		WHERE NOT (OLD.quantity <=> NEW.quantity)
+	UNION
+    # Changed active
+	SELECT NEW.id_item, 'active', CONVERT(CONVERT(OLD.active, SIGNED), CHAR), CONVERT(CONVERT(NEW.active, SIGNED), CHAR), NEW.id_change_set_user
+		WHERE NOT (OLD.active <=> NEW.active)
+	;
+END //
+DELIMITER ;