创建多个触发器时遇到 "Warning: Trigger created with compilation errors."
encountering "Warning: Trigger created with compilation errors." while creating multiple triggers
我试图在 sql 文件中创建多个触发器。并且代码如下:
CREATE OR REPLACE TRIGGER trigger_selling_price_change
AFTER INSERT OR UPDATE ON SellingPrice
FOR EACH ROW
BEGIN
dbms_output.put_line('price of phone updated');
INSERT INTO LogSellingPriceChange
VALUES(sysdate, phone_id, :old.price, :new.price);
END;
/
CREATE OR REPLACE TRIGGER trigger_purchase_cost_change
AFTER INSERT OR UPDATE ON PurchaseCost
FOR EACH ROW
BEGIN
dbms_output.put_line('purchase cost updated');
INSERT INTO LogPurchaseCostChange
VALUES(sysdate, phone_id, :old.cost, :new.cost);
END;
/
CREATE OR REPLACE TRIGGER trigger_inventory_addition
AFTER INSERT ON Inventory
FOR EACH ROW
BEGIN
dbms_output.put_line('enlisted new phones in database');
INSERT INTO LogInventoryAddition
VALUES(sysdate, phone_id, :old.quantity, :new.quantity);
END;
/
但是当我在 pl/sql 中执行它时,我得到了 Warning: Trigger created with compilation errors.
三次。
执行 show_errors
后,我得到以下输出:
Errors for TRIGGER TRIGGER_INVENTORY_ADDITION:
LINE/COL ERROR
-------- -----------------------------------------------------------------
3/2 PL/SQL: SQL Statement ignored
4/18 PL/SQL: ORA-00984: column not allowed here
查询包含的表声明如下:
CREATE TABLE Inventory(
id number,
phone_id number,
quantity number,
PRIMARY KEY (id),
FOREIGN KEY (phone_id) REFERENCES Phone(id)
);
CREATE TABLE PurchaseCost(
id number,
phone_id number,
cost number,
PRIMARY KEY(id),
FOREIGN KEY (phone_id) REFERENCES Phone(id)
);
CREATE TABLE SellingPrice(
id number,
phone_id number,
price number,
PRIMARY KEY(id),
FOREIGN KEY (phone_id) REFERENCES Phone(id)
);
CREATE TABLE LogSellingPriceChange(
change_date date,
phone_id number,
old_price number,
new_price number,
FOREIGN KEY(phone_id) REFERENCES Phone(id)
);
CREATE TABLE LogPurchaseCostChange(
change_date date,
phone_id number,
old_price number,
new_price number,
FOREIGN KEY(phone_id) REFERENCES Phone(id)
);
CREATE TABLE LogInventoryAddition(
addition_date date,
phone_id number,
old_quantity number,
new_quantity number,
FOREIGN KEY(phone_id) REFERENCES Phone(id)
);
我在成功创建表后执行创建触发器的文件。但是,我没有插入任何值。
Column not allowed 错误,因为您试图在没有 psudo 键 :new
或 :old
、
phone_id
列
CREATE OR REPLACE TRIGGER trigger_selling_price_change
AFTER INSERT OR UPDATE ON SellingPrice
FOR EACH ROW
BEGIN
dbms_output.put_line('price of phone updated');
INSERT INTO LogSellingPriceChange
VALUES(sysdate, :new.phone_id, :old.price, :new.price);
END;
/
您还需要更改其他触发器。