Plsql 如何动态更新特定列

我使用下表

book_Catalog contains
  book name,
  book_id,
  book_title,
  created_by(contains the detail which user created this entry),      
  updated_by(contains the detail which user updates this entry)
  created_by column uses the system date

请给出一个想法 应该使用什么查询来填写“按列更新”

提前感谢,

---

Ashmitha

您可以使用

CREATE PROCEDURE UPDATE_BOOK_CATALOG_UPDATED_BY
    (pin_BOOK_ID BOOK_CATALOG.UPDATED_BY%TYPE)
IS
BEGIN
  UPDATE BOOK_CATALOG
    SET UPDATED_BY = UID
    WHERE BOOK_ID = pin_BOOK_ID;
END UPDATE_BOOK_CATALOG_UPDATED_BY;

---

共享和享受。

您可以使用更新后触发器来完成此操作

CREATE OR REPLACE TRIGGER My_Trigger
AFTER INSERT 
ON TABLE
FOR EACH ROW
DECLARE
BEGIN
END;/

---

代码格式在哪里？您是否刚刚完成了一个涵盖触发器的类？