同一個循環中的多個遊標

Question

我有一個關於使用遊標的問題。

Table t1 having "t1c1" and "t1c2" columns. 

Table t2 having "t2c2" and "t2c2" columns. 

Table t3 having "t3c2","t3c2","t3c3","t3c4" columns. 

Two cursors "cur1" and "cur2". 

我寫代碼，我需要使用光標「CUR1」

實施例的循環將值插入T3：

DECLARE 

CURSOR cur1 IS 
SELECT t1c1 FROM t1; 

CURSOR cur2 IS 
SELECT t2c1 FROM t2; 

BEGIN 

FOR f1 IN cur1 LOOP 

EXIT WHEN cur1%NOTFOUND; 

INSERT INTO TABLE t3 
(
    SELECT f1.t1c1,t2.t2c2,'hello' FROM t2; 
); 

END LOOP; 

從我已插入第一三列以上的代碼表t3。

我想知道如何將cur2（遊標值）插入表t3的第4列。

Answer 1

insert into t3 
select t1.t1c1, t2.t2c2, 'Hello' 
from t1, 
    t2 

我真的很奇怪你沒有提到t1和t3之間的任何聯繫，所以你得到了cartezian。