Issue using cursors in extractors

Question

Hello,
I am using two cursors in an extractor. My requirement is to delete data obtained from one cursor from another set of data obtained from the second cursor.
What happens is when the two cursors run for the first time, assuming they read 100 records each, if the data i require to delete from the second cursor is not in the first set of records obtained from the first cursor, then on the second run, the data would be replaced by new data in both the tables and this time, even though the data is available in the second cursor, the data in the first has been replaced already. So the requirement doesnt get fulfilled.
If anyone could make sense of what i just wrote , pls help me out.
Regards,
Suraj

Answer 1

Hi Suraj,
The thing is you cannot raise the exception when there is not data fetch in the first cursor select statement.
As you dont know at run time is there any data left in the second select statement you have written .
what you can do if declare a variable which will be set to X when the sy-subrc<> 0 for the first select statment.
like
This is your 1st select statement with the cursor .....
    FETCH NEXT CURSOR S_CURSOR
               APPENDING CORRESPONDING FIELDS
               OF TABLE E_T_DATA
               PACKAGE SIZE S_S_IF-MAXSIZE.
    IF SY-SUBRC <> 0.
lv_var = 'X' .
Dont raise the ecception here.
    ENDIF.
No the 2nd select statment with cursor
    FETCH NEXT CURSOR S_CURSOR
               APPENDING CORRESPONDING FIELDS
               OF TABLE E_T_DATA
               PACKAGE SIZE S_S_IF-MAXSIZE.
    IF SY-SUBRC <> 0.
if lv_var = 'X' .
raise the ecception here this is because in the 1st select it has already fetch all the data .
endif.  
ENDIF.
where you lv_var is type c .
I hope it is clear now.
Regards,
Pawan
Message was edited by:
        PS