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尝试使用SQL Developer在Oracle 11g数据库中创建触发器时,我遇到了一个奇怪的错误.这是我做的:

我的桌子:

CREATE TABLE COUNTRY_CODE(
   ID NUMBER(19,0)      PRIMARY KEY NOT NULL, 
   Code             VARCHAR2(2) NOT NULL,
   Description  VARCHAR2(50),
   created                  TIMESTAMP DEFAULT CURRENT_TIMESTAMP, 
   created_by                   VARCHAR2(40) DEFAULT USER, 
   last_updated                 TIMESTAMP DEFAULT CURRENT_TIMESTAMP, 
   last_updated_by          VARCHAR2(40) DEFAULT USER,
   archived CHAR(1) DEFAULT '0' NOT NULL );

序列:

CREATE SEQUENCE COUNTRY_CODE_ID_SEQ START WITH 1 INCREMENT BY 1;

触发:

CREATE OR REPLACE TRIGGER COUNTRY_CODE_TRIGGER
BEFORE INSERT ON COUNTRY_CODE
FOR EACH ROW
DECLARE
    max_id number;
    cur_seq number;
BEGIN
    IF :new.id IS NULL THEN
    SELECT COUNTRY_CODE_ID_SEQ.nextval
    INTO :new.id …