Oracle PL / SQL –重命名触发器

本文向您展示如何使用ALTER TRIGGER重命名触发器。

-- rename a trigger
ALTER TRIGGER original_name RENAME TO new_name;

1.表+触发器

electricity_bill

create table electricity_bill
(
  bill_id number(5) primary key,
  amount number(5)
);

-- Table ELECTRICITY_BILL created.

trg_rename_example

CREATE OR REPLACE TRIGGER trg_rename_example
BEFORE
     UPDATE OR DELETE OR INSERT
ON electricity_bill
  FOR EACH ROW 

BEGIN

  dbms_output.put_line('trg_rename_example Trigger called.');
  
END;

-- Trigger TRG_RENAME_EXAMPLE compiled

2.重命名触发器示例

2.1获取所有触发器都属于指定表

SELECT TABLE_NAME,TRIGGER_NAME FROM USER_TRIGGERS WHERE upper(TABLE_NAME) = 'ELECTRICITY_BILL';

TRIGGER_NAME	状态
ELECTRICITY_BILL	TRG_RENAME_EXAMPLE

2.2重命名触发器。

ALTER TRIGGER trg_rename_example RENAME TO trg_name_updated;

-- output
-- Trigger TRG_RENAME_EXAMPLE altered.

2.3再次检查触发器名称。

SELECT TABLE_NAME,TRIGGER_NAME FROM USER_TRIGGERS WHERE upper(TABLE_NAME) = 'ELECTRICITY_BILL';

TRIGGER_NAME	状态
ELECTRICITY_BILL	TRG_NAME_UPDATED

参考文献

1. 甲骨文– ALTER TRIGGER
2. Oracle – PL / SQL触发器

标签： oracle plsql 重命名 触发器

翻译自: https://mkyong.com/oracle/oracle-plsql-rename-trigger/