表/视图“新”不存在，德比

Question

Create Trigger AddUserSessionDate AFTER INSERT ON Usersession
REFERENCING NEW AS NEW
FOR EACH ROW Mode DB2SQL
UPDATE NEW SET NEW.session_date = CURRENT_DATE;

我正在尝试创建一个触发器以在每次插入一行时填写当前日期。除了德比documentation 中的三个以外，我找不到许多其他示例。我在这个例子之后建模了这个语句

CREATE TRIGGER FLIGHTSDELETE3
  AFTER DELETE ON FLIGHTS
  REFERENCING OLD AS OLD
  FOR EACH ROW MODE DB2SQL
  DELETE FROM FLIGHTAVAILABILITY WHERE FLIGHT_ID = OLD.FLIGHT_ID;

但我明白了

Error code 30000, SQL state 42X05: Table/View 'NEW' does not exist.

我做错了什么？

Answer 1

我会使用DEFAULT 而不是触发器：

CREATE TABLE Usersession (
  session_date  column_type DEFAULT CURRENT_DATE
  ,...
)