以下SQL在Oracle 9i服务器上执行时会产生错误“ORA-04098:触发器'DBO.WTF_TRIGGER'无效且重新验证失败”。
DROP TABLE "DBO".WTF;
CREATE TABLE "DBO".WTF
(id NUMBER PRIMARY KEY,
name VARCHAR2(30));
CREATE SEQUENCE "DBO".WTF_sequence
START WITH 1
INCREMENT BY 1;
CREATE OR REPLACE TRIGGER "DBO".WTF_trigger
BEFORE INSERT
ON "DBO".WTF
REFERENCING NEW AS NEW
FOR EACH ROW
BEGIN
SELECT "DBO".WTF_sequence.nextval INTO :NEW.id FROM dual;
END;
INSERT INTO "DBO".WTF (name) VALUES ('asd');
有什么想法吗?
答案 0 :(得分:3)
正如APC指出的那样,在SQL * Plus中执行SHOW ERRORS
打印错误会很有帮助。如果我创建具有适当权限的DBO
用户,那么您发布的代码对我来说非常合适。
SQL> conn / as sysdba
Connected.
SQL> create user dbo identified by dbo;
User created.
SQL> grant connect, resource, unlimited tablespace to dbo;
Grant succeeded.
SQL> conn dbo/dbo
Connected.
SQL> DROP TABLE "DBO".WTF;
DROP TABLE "DBO".WTF
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL>
SQL> CREATE TABLE "DBO".WTF
2 (id NUMBER PRIMARY KEY,
3 name VARCHAR2(30));
Table created.
SQL>
SQL> CREATE SEQUENCE "DBO".WTF_sequence
2 START WITH 1
3 INCREMENT BY 1;
Sequence created.
SQL>
SQL> CREATE OR REPLACE TRIGGER "DBO".WTF_trigger
2 BEFORE INSERT
3 ON "DBO".WTF
4 REFERENCING NEW AS NEW
5 FOR EACH ROW
6 BEGIN
7 SELECT "DBO".WTF_sequence.nextval INTO :NEW.id FROM dual;
8 END;
9 /
Trigger created.
SQL> INSERT INTO "DBO".WTF (name) VALUES ('asd');
1 row created.
SQL> select * from wtf;
ID NAME
---------- ------------------------------
1 asd