CONTROL BREAK STATEMENTS

[Former Member]

HELLO ALL,

i have written a report program. where should i place the control break statements. is it in the loop which i used to retrieve the data using select statements or in the loop used to wrie the output into the basic list??

thanks & regards,

seenu

[Former Member]

YOu should use the control break statements at internal table level for performance reasons.

Refer demo progs: DEMO_INT_TABLES_AT_1 and DEMO_INT_TABLES_AT_2.

[Former Member]

<b>keep it in the loop used to write the output into the basic list</b>

[Former Member]

Hello,

Control break stmt should be always in the LOOP ... ENDLOOP.

Check this example:

AT END OF f.
 
 
 
 
Effect 
f is a sub-field of an internal table or extract dataset (EXTRACT) which is being processed with LOOP, i.e. the variants 1 and 2 only make sense within a LOOP. 
Both "AT NEW f." and "AT END OF f. " introduce processing blocks which are concluded by " ENDAT.". 
These processing blocks are processed whenever the contents of a field f or a sub-field defined before f change as a result of processing with LOOP. "AT NEW f." begins a new group of (table) lines with the same contents as the field f while "AT END OF f." concludes such a group. 
 
Within the AT ... ENDAT processing of internal tables, all argument fields following f are filled with "*". 
 
 
 
Examples 
1. AT for sub-fields of an internal table 
 
 
 
DATA: BEGIN OF COMPANIES OCCURS 20, 
        NAME(30), 
        PRODUCT(20), 
        SALES TYPE I, 
      END   OF COMPANIES. 
... 
LOOP AT COMPANIES. 
  AT NEW NAME. 
    NEW-PAGE. 
    WRITE / COMPANIES-NAME. 
  ENDAT. 
  WRITE: / COMPANIES-PRODUCT, COMPANIES-SALES. 
  AT END OF NAME. 
    SUM. 
    WRITE: / COMPANIES-NAME, COMPANIES-SALES. 
  ENDAT. 
ENDLOOP.

[Former Member]

hi seenu,

u need to use it inside LOOP AT ITAB... ENDLOOP.

when u r using control brk stmts..dont forget to sort the table.

regards,

priya.

[Former Member]

hi,

control break stmts are used twhile displaying o/ps either to calc totals or to group the fields and count the rows rtc.

so u shud use it in the loop used to write the o/p.

check the simple ex prog using control breaks.

DATA:BEGIN OF ITAB OCCURS 0,

A1(10) TYPE C,

A3(10) TYPE C,

A2 TYPE I,

END OF ITAB.

DATA:TOT TYPE I,count TYPE I,i type i.

ITAB-A1 = 'char1'.

ITAB-A3 = 'abc'.

ITAB-A2 = '10'.

APPEND ITAB.

ITAB-A1 = 'char1'.

ITAB-A3 = 'def'.

ITAB-A2 = '20'.

APPEND ITAB.

ITAB-A1 = 'char1'.

ITAB-A3 = 'abc'.

ITAB-A2 = '30'.

APPEND ITAB.

ITAB-A1 = 'char2'.

ITAB-A3 = 'abc'.

ITAB-A2 = '10'.

APPEND ITAB.

ITAB-A1 = 'char2'.

ITAB-A3 = 'abc'.

ITAB-A2 = '20'.

APPEND ITAB.

<b>SORT ITAB BY A1 a3.</b>

<b>loop at itab.</b>

<b>at new a1.</b>

write:/ itab-a1.

clear i.

<b>endat.</b>

<b>at new a3.</b>

if i > 0.

write:/10 itab-a3.

else.

write:10 itab-a3.

endif.

clear count.

<b>endat.</b>

count = count + 1.

i = i + 1.

<b>at end of a3.</b>

write:20 count.

<b>endat.</b>

<b>endloop.</b>

o/p :

<b>char1 abc 2

def 1

char2 abc 2 </b>

NOTE: don't forget to sort the table before using control breaks.

regards,

*reward points for all helpful answers