How to delete the NULL entries in nest table

Question

Hi,
After I used a loop and open/fetch cursor populated the object table
I found there are random NULL entries in my object table (nest table)
The data look like this
NULL NULL           NULL
NULL NULL           NULL
123     03-MAY-04     ACTIVE
NULL NULL           NULL
NULL NULL           NULL
234     21-MAY-04     ACTIVE
NULL NULL           NULL
345     11-MAY-04     ACTIVE
NULL NULL           NULL
How can I get rid of those NULL entries in my nest table? So it can become
123     03-MAY-04     ACTIVE
234     21-MAY-04     ACTIVE
345     11-MAY-04     ACTIVE
Additional info:
create type myType as object
(id NUMBER (10,0),
eff_date date,
status VARCHAR2(17)
create type myNestTab as table of myType;
I have tried Delete procedure in following two ways.
Version 1:
FOR i IN l_my_nest_tab.FIRST..l_my_nest_tab.LAST
LOOP
IF l_my_nest_tab(i).id IS NULL THEN
l_curr_event_tb.DELETE(i);
               END IF;                         
END LOOP;
Version 2:
FOR i IN l_my_nest_tab.FIRST..l_my_nest_tab.LAST
LOOP
IF l_my_nest_tab(i) IS NULL THEN
l_curr_event_tb.DELETE(i);
               END IF;                         
END LOOP;
Both of them give me the error “no data found.” And only left me the first NOT NULL entry in the table.
123     03-MAY-04     ACTIVE
Thanks in avdance.

Answer 1

Hi Vishnu,
u can write a report program for this and in that use the event  :
AT NEW <field-name> ( use primary key)
your statements
ENDAT
for eg.
loop at itab ( herfe itab must be of type of table for which u want to track new entries)
at new matnr
write:/ new record
endat
endloop.
schedule this report in background to run in every 5 or 10 mins as per your requirement and hence changes can be tracked.
regards
Vinod