1像這樣創建表

CREATE TABLE oracle_connet_by_test (

item_id NUMBER PRIMARY KEY,

parent_id NUMBER,

item_desc VARCHAR2(8));

INSERT INTO oracle_connet_by_test VALUES(1, 0, 'AAA');

INSERT INTO oracle_connet_by_test VALUES(2, 0, 'BBB');

INSERT INTO oracle_connet_by_test VALUES(3, 1, 'CCC');

INSERT INTO oracle_connet_by_test VALUES(4, 2, 'DDD');

INSERT INTO oracle_connet_by_test VALUES(5, 1, 'EEE');

INSERT INTO oracle_connet_by_test VALUES(6, 3, 'FFF');

INSERT INTO oracle_connet_by_test VALUES(7, 3, 'GGG');

commit;

2當我運行此腳本時,輸出將是

SQL> SELECT LEVEL,

2 ITEM_ID,

3 PARENT_ID, LPAD(' ', 4 * (LEVEL - 1)) || ITEM_DESC AS ITEM_DESC

4 FROM ORACLE_CONNET_BY_TEST

5 START WITH parent_Id = 0

6 CONNECT BY PRIOR ITEM_ID = PARENT_ID

7 ;

LEVEL ITEM_ID PARENT_ID ITEM_DESC

---------- ---------- ---------- -----------

1 1 0 AAA

2 3 1 CCC

3 6 3 FFF

3 7 3 GGG

2 5 1 EEE

1 2 0 BBB

2 4 2 DDD

3問題：如果我想要這個結果,我該如何編寫代碼？

LEVEL ITEM_ID PARENT_ID ITEM_DESC SUPER_ID

---------- ---------- ---------- ---------------- ----------

1 1 0 AAA 1

2 3 1 CCC 1

3 6 3 FFF 1

3 7 3 GGG 1

2 5 1 EEE 1

1 2 0 BBB 2

2 4 2 DDD 2

總結

以上是生活随笔為你收集整理的oracle获取父级,如何通过sql获取oracle connect中的最终父id列的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。