DB2對我使用SQL子價值

我有一個父和PARENT_ID加入了一個子表，我想在子表中使用的值刪除兩個表中的行刪除外鍵加入2個表中的行DB2對我使用SQL子價值

這就是我想和它不工作

WITH 
-- DELETE THE COSTS FIRST AND LET DB2 STORE THE IDs IN AN 'OLD TABLE' 
DELETED_CHILD(ID) AS (SELECT PAYABLE_ID FROM OLD TABLE (
DELETE FROM MYLIB.MYCOST 
WHERE KEY_VALUE = '1000000' 
) 
), 
-- DELETE THE PAYABLE HEADER USING THE DELETED_LINK IDs 
DELETED_PARENT(ID) AS (SELECT PAYABLE_ID FROM OLD TABLE (
DELETE FROM MYLIB.MYPAYABLE 
WHERE PAYABLE_ID IN (SELECT DISTINCT ID FROM DELETED_CHILD) 
) 
) 
(
-- SELECT IN WITH STATEMENT IS MANDATORY USELESS STATEMENT 
SELECT * FROM SYSIBM.SYSDUMMY1 
);

我得到的錯誤是

錯誤代碼-199，SQL狀態42601：預計不會[SQL0199]關鍵詞表。有效令牌：）取貨訂單UNION除外。

我想刪除所有的孩子，然後他們的父母。任何幫助表示讚賞

來源

2016-09-15 user1500144

哪個版本？舊版本可能不支持_Data更改表_。 – mustaccio

從版本6.1開始，DB2 for i中允許使用_data-change-table-reference_，但只有INSERT語句可用於IBM i 7.3。 – user2338816

我在舊7.1上運行，解決方案是什麼？ – user1500144

成才這樣

DECLARE GLOBAL TEMPORARY TABLE DELETED_CHILD AS ( 
SELECT * FROM MYLIB.MYCOST 
WHERE KEY_VALUE = '1000000' 
) WITH DATA WITH REPLACE NOT LOGGED; 

DECLARE GLOBAL TEMPORARY TABLE DELETED_PARENT AS ( 
SELECT * FROM MYLIB.MYPAYABLE 
WHERE PAYABLE_ID IN (SELECT ID FROM QTEMP.DELETED_CHILD) 
) WITH DATA WITH REPLACE NOT LOGGED; 

DELETE FROM MYLIB.MYCOST 
WHERE ID IN (SELECT ID FROM QTEMP.DELETED_CHILD); 

DELETE FROM MYLIB.MYPAYABLE 
WHERE PAYABLE_ID IN (SELECT PAYABLE_ID FROM QTEMP.DELETED_PARENT) ; 

select PAYABLE_ID, 'CHILD' TYPEDELETED FROM QTEMP.DELETED_CHILD 
union all 
select PAYABLE_ID, 'PARENT' TYPEDELETED FROM QTEMP.DELETED_PARENT ;

來源

2016-09-19 17:31:54 Esperento57

如果外鍵關係已創建「ON DELETE CASCADE」

DELETE FROM PARENT 
     WHERE PARENT_ID in (
       SELECT CHILD_ID FROM CHILD_TABLE 
       WHERE CHILD_FIELD = 'XXXXX'

如何設置Referential/Foreign Key Constraint：

參考：W3Schools Foreign Key Constraint

ALTER TABLE MYLIB.MYCOST 
    ADD CONSTRAINT fk_MYCOST 
    FOREIGN KEY (PAYABLE_ID) 
    REFERENCES MYLIB.MYPAYABLE(PAYABLE_ID) 
    ON DELETE CASCADE 
    ON UPDATE RESTRICT

參照Constaint注意事項：

表日誌式
父ID必須是唯一的IBM的I /主鍵

來源

2016-09-20 13:16:48

DB2對我使用SQL子價值

回答

相關問題