Pl/sql script needed - Urgent

Question

Hi All,
I have one problem. I have to populate a table having rows more than 500000000 $ through PL/SQL.
For getting the idea...I have created one dummy table " T1 " with column " X " having 9 rows and
values in source are -
row 1 = 10
row 5 = 20
row 8 = 30
Other rows(2, 3, 4, 6, 7, 9) are null.
I want to carry fwd the values so the values in the same table will come like -
row 1, 2, 3, 4 = 10
row 5, 6 ,7 = 20
row 8,9 = 30
For resolving the problem i have written a procedure :
DECLARE
CURSOR cur_adb IS SELECT * FROM t1 ;
var cur_adb%rowtype ;
var1 number(10) ;
BEGIN
OPEN cur_adb ;
LOOP
FETCH cur_adb INTO var ;
DBMS_OUTPUT.PUT_LINE ( 'x=') ;
EXIT WHEN cur_adb%ROWCOUNT > 10 ;
If var is not null
then update t1
set x = var ;
var1 := VAR;
else update t1
set x = var1 ;
exit;
end if;
END LOOP;
CLOSE cur_adb ;
END ;
But it is giving me wrong result as it is fetching more rows at a time.
Pls. send me the correct Pl/SQL script as soon as possible.
Note: You can directaly send the procedure to [email protected] .
Thanks & Regs,
Ashish

Answer 1

Hello,
I got the solution by adding on more column in the source table :
source table : T1 -> x x_id
10 1
2
3
4
20 5
6
7
30 8
9
The procedure is :
SQL> DECLARE
2 CURSOR cur_adb IS SELECT x, x_id FROM t1 ;
3 var number(10) ;
4 var1 number(10) ;
5 var2 number(10) ;
6 BEGIN
7 OPEN cur_adb ;
8 LOOP
9 FETCH cur_adb INTO var , var2 ;
10 If var is not null
11 then var1 := VAR;
12 elsif var is null
13 then update t1
14 set x = var1
15 where x_id = var2;
16 end if;
17 DBMS_OUTPUT.PUT_LINE ('The value of x=' || var) ;
18 Exit when cur_adb%ROWCOUNT > 9 or cur_adb%NOTFOUND ;
19 END LOOP;
20 CLOSE cur_adb ;
21 END ;
22 /
The value of x=10
The value of x=10
The value of x=10
The value of x=10
The value of x=20
The value of x=20
The value of x=20
The value of x=30
The value of x=30
The value of x=30
PL/SQL procedure successfully completed.
Thanks everyone for helping me........
Regards,
Ashish