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我已經嘗試了應用在很多方面外鍵,而是插入一行到我的表,該表時,我收到了同樣的錯誤:外鍵插入錯誤的SQL開發
INSERT INTO MEDICINE
VALUES (50, 'PREDNISONE', '8 BOTTLES', 'N',
TO_DATE('12-MAR-2019','DD-MON-YYYY'),
TO_DATE('09-JAN-2016','DD-MON-YYYY'), 2);
我已經創建了我的表很多:
CREATE TABLE MEDICINE
(
M_ID NUMBER PRIMARY KEY,
M_NAME VARCHAR2(50),
QUANTITY NUMBER,
OTC VARCHAR2(1),
EXPR DATE,
LAST_AUDIT DATE,
PT_ID NUMBER,
CONSTRAINT fk_MED FOREIGN KEY (PT_ID)
REFERENCES PHARM_TECH(PT_ID)
);
我也試過:
CREATE TABLE MEDICINE
(
M_ID NUMBER PRIMARY KEY,
M_NAME VARCHAR2(50),
QUANTITY NUMBER,
OTC VARCHAR2(1),
EXPR DATE,
LAST_AUDIT DATE,
PT_ID NUMBER
);
ALTER TABLE MEDICINE
ADD FOREIGN KEY (PT_ID)
REFERENCES PHARM_TECH(PT_ID);
我也嘗試:
CREATE TABLE MEDICINE
(
M_ID NUMBER PRIMARY KEY,
M_NAME VARCHAR2(50),
QUANTITY NUMBER,
OTC VARCHAR2(1),
EXPR DATE,
LAST_AUDIT DATE,
PT_ID NUMBER REFERENCES PHARM_TECH(PT_ID)
);
這些都運行正常,並創建表沒有問題,但是,插入行上面時,我不斷收到此錯誤:
Error report -
SQL Error: ORA-01722: invalid number
01722. 00000 - "invalid number"
*Cause: The specified number was invalid.
*Action: Specify a valid number.
是什麼造成的?
該錯誤與外鍵無關。 '8 BOTTLES'根本不是一個數字(這是'quantity'列的數據類型) –