Oracle SQL 开发人员 - 为什么我无法从我在删除级联上设置的表中删除行并收到无效的表名错误？

Question

I'm using Oracle SQL Developer , below is the error I get:

Error report - SQL Error: ORA-00903: invalid table name 00903. 00000 - "invalid table name"

Here is my code:

ALTER TABLE PCASE
  DROP CONSTRAINT PCASE_Participant_FK;

ALTER TABLE PCASE
  ADD CONSTRAINT PCASE_Participant_FK
  FOREIGN KEY ( PartID )
  REFERENCES Participant ( PartID )
  ON DELETE CASCADE;


ALTER TABLE Meeting
  DROP CONSTRAINT Meeting_PCASE_FK;

ALTER TABLE Meeting
  ADD CONSTRAINT Meeting_PCASE_FK
  FOREIGN KEY ( PCaseNo )
  REFERENCES PCASE ( PCaseNo )
  ON DELETE CASCADE; 


ALTER TABLE MPlan
  DROP CONSTRAINT MPlan_Meeting_FK;

ALTER TABLE MPlan
  ADD CONSTRAINT MPlan_Meeting_FK
  FOREIGN KEY ( PCaseNo, MeetingNo )
  REFERENCES Meeting ( PCaseNo, MeetingNo )
  ON DELETE CASCADE; 


ALTER TABLE Laboratory
  DROP CONSTRAINT Laboratory_MPlan_FK; 

ALTER TABLE Laboratory
  ADD CONSTRAINT Laboratory_MPlan_FK
  FOREIGN KEY ( MPlanNo )
  REFERENCES MPlan ( MPlanNo )
  ON DELETE CASCADE; 


ALTER TABLE Diary
  DROP CONSTRAINT Diary_MPlan_FK; 

ALTER TABLE Diary
  ADD CONSTRAINT Diary_MPlan_FK
  FOREIGN KEY ( MPlanNo )
  REFERENCES MPlan ( MPlanNo )
  ON DELETE CASCADE; 

COMMIT;

SELECT * 
  FROM Participant
  WHERE PartID=12345;

DELETE * 
  FROM Participant
  WHERE PartID=12345;

I just set the FKs of the child tables as ON DELETE CASCADE , but it does not work. I tried another method as below, but get the same error.

DELETE *
FROM Participant p, PCASE pc, Meeting m, MPlan mp, Laboratory l
WHERE p.PartID=pc.PartID
AND pc.PCaseNo=m.PCaseNo
AND (m.PCaseNo=mp.PCaseNo
    AND m.MeetingNo=mp.MeetingNo)
AND mp.MPlanNo=l.MPlanNo 
AND p.PartID=12345;


DELETE *
FROM Participant p, PCASE pc, Meeting m, MPlan mp, Diary d
WHERE p.PartID=pc.PartID
AND pc.PCaseNo=m.PCaseNo
AND (m.PCaseNo=mp.PCaseNo
    AND m.MeetingNo=mp.MeetingNo)
AND mp.MPlanNo=d.MPlanNo
AND p.PartID=12345;

Can anybody help? Thanks a lot!

Answer 1

It's DELETE FROM ... , not DELETE * FROM ... . Your invalid syntax is confusing Oracle's parser into giving you a slightly misleading error message.