Delete modify in itab output display

Question

hi,
i am create a query for delete data from database table by using an internal table i am delete data from DB table but a problem are come as in output display
i am showing  the
NUMBER OF ENTRIES ARE DELETE FROM TABLE: 2
NUMBER OF ENTRIES ARE REMAIN IN TABLE AFTER DELETEION:
seletion screen contains 
SELECT-OPTIONS: s_ordid FOR zapolp22-ordid,   "APO order id
                            s_matnr FOR zapolp22-matnr,   "Material Number
                 s_locto FOR zapolp22-locto.   "APO Destination location
PARAMETERS: p_days TYPE i. "Number of days
the problem are as:
if i am given only P-days parameter value 3
than it works as fine
showing output right as 2 rows are deleted
and 8 rows are remains in table
if i given all fields fill up in selection screen
as s_ordid----->4516 to 4517
    s_matnr---->85503 to 85505
   s_locto------> m100 to m101
p_days----> 2
then i get output display as
number of entries  are deleted   2
number of entries are remain in table  0.
but the 2 rows are deleted from DB table and 8 rows are remain in table but it not show the 8 rows on display screen it shows zero.
my code is as:
DATA:  lv_count  TYPE i,
       lv_count1 TYPE i.
DATA: lv_date TYPE sy-datum.
SELECT mandt
       ordid
       schedid
       matnr
       locto
       lfmng
       lfdat
       locfr
       rqmng
       rqdat AS lv_date
       prckz
       blkstk
       oppdelqty
       zzapologmod
       zzflagurgent
       zzapottype
       zzndays_l_time
FROM zapolp22 INTO TABLE lt_output
WHERE ordid IN s_ordid  AND
       matnr IN s_matnr  AND
       locto IN s_locto.
SORT lt_output[] BY rqdat.
>Number OF Days to be Counted
lv_date = sy-datum - p_days.
LOOP AT lt_output.
  IF lt_output-rqdat LT lv_date.
    MOVE-CORRESPONDING lt_output TO lt_delete.
    APPEND lt_delete.
    lv_count = lv_count + 1.
  ELSE.
    lv_count1 = lv_count1 + 1.
  ENDIF.
endloop.
DELETE FROM zapolp22  WHERE rqdat LT lv_date AND
                            ordid IN s_ordid AND
                            matnr IN s_matnr AND
                            locto IN s_locto.
IF sy-subrc = 0.
  WRITE:/25 'Number of entries deleted            :', lv_count.
  WRITE:/25 'Number of entries remaining          :', lv_count1.
ELSEIF sy-subrc NE 0.
  WRITE:/ 'No data are selected for delete'.
ENDIF.
Tell me where in this code i do mistake.
Thanks jayant.

Answer 1

I don't know the contents of the table, but if you increase the number of restrictions in the SELECT statement, it will probably have lesser entries.
Now, you are not really counting the total number of rows left in the table, but the total number of rows in the table that match the criterion.
Basically, the first time (with lesser options) 10 rows are put into internal table, and 2 are deleted. So 8 are left.
In the second time, only 4 rows are getting selected, of which 2 are deleted, and 2 are left in the internal table NOT in the database table. In the database table, more rows are left (because they never got selected into the itab)
But if you want to count the total number of rows left in the DB, its better to count the number of rows in the end of the program with:
SELECT COUNT(*) FROM dbtab INTO lv_integer.
This can be pretty slow if the table is huge.