Feat(SQL, UI): Redesign database with much more detailed command response quality analysis and created successfully loading Dog Command Links page

static/MySQL/31204_tri_DOG_Location_Link.sql

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+
+USE parts;
+
+DROP TRIGGER IF EXISTS parts.before_insert_DOG_Location_Link;
+DROP TRIGGER IF EXISTS parts.before_update_DOG_Location_Link;
+
+DELIMITER //
+CREATE TRIGGER parts.before_insert_DOG_Location_Link
+BEFORE INSERT ON parts.DOG_Location_Link
+FOR EACH ROW
+BEGIN
+	SET NEW.created_on := IFNULL(NEW.created_on, NOW());
+END //
+DELIMITER ;
+
+DELIMITER //
+CREATE TRIGGER parts.before_update_DOG_Location_Link
+BEFORE UPDATE ON parts.DOG_Location_Link
+FOR EACH ROW
+BEGIN
+	IF OLD.id_change_set <=> NEW.id_change_set THEN
+		SIGNAL SQLSTATE '45000'
+        SET MESSAGE_TEXT = 'New change Set ID must be provided.';
+    END IF;
+    
+    INSERT INTO parts.DOG_Location_Link_Audit (
+		  id_link
+        , name_field
+        , value_prev
+        , value_new
+        , id_change_set
+    )
+	-- Changed id_location_parent
+	SELECT NEW.id_link, 'id_location_parent', CONVERT(OLD.id_location_parent, CHAR), CONVERT(NEW.id_location_parent, CHAR), NEW.id_change_set
+		WHERE NOT (OLD.id_location_parent <=> NEW.id_location_parent)
+	UNION
+	-- Changed id_location_child
+	SELECT NEW.id_link, 'id_location_child', CONVERT(OLD.id_location_child, CHAR), CONVERT(NEW.id_location_child, CHAR), NEW.id_change_set
+		WHERE NOT (OLD.id_location_child <=> NEW.id_location_child)
+	UNION
+	-- Changed active
+	SELECT NEW.id_link, 'active', CONVERT(CONVERT(OLD.active, SIGNED), CHAR), CONVERT(CONVERT(NEW.active, SIGNED), CHAR), NEW.id_change_set
+		WHERE NOT (OLD.active <=> NEW.active)
+    ;
+END //
+DELIMITER ;