Difference between At-new and on change of

Hi,
Can anyone send me the exact difference between At-new and On change of
Thank You
Santosh

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Difference between At new and On change of?
Posted on: 28.09.2006 19:01, by user: subhash soni -- Relevance: 100% -- Show all results within this thread
Hi What is the difference between At new and On change of? Thank You
difference between At-new and on change of
Posted on: 09.03.2007 20:16, by user: anjali nalluri -- Relevance: 89% -- Show all results within this thread
Hi, Can anyone send me the exact difference between At-new and On change of Thank You Santosh
Diff between AT new and on change of
Posted on: 30.11.2006 16:06, by user: Pavan Ravikanti -- Relevance: 53% -- Show all results within this thread
hi, can any one tell me what is the exact difference between AT new and on change of thanks pavan ...
Diff. between At New and On Change Of
Posted on: 05.10.2005 08:58, by user: surya mamtha -- Relevance: 48% -- Show all results within this thread
Hi, Could anybody exlain the difference between At New event and On Change Of event in detail? And how can we avoid the inner loops ...
Major Diff. Between On change of and At New
Posted on: 24.05.2006 12:48, by user: IFF -- Relevance: 46% -- Show all results within this thread
Hi Experts, Could you please let me know that what is the major difference between the control break statements On change of and At new. Which one is best to used ...
diff between at new and on change of
Posted on: 08.03.2007 16:27, by user: saroja ponnam -- Relevance: 44% -- Show all results within this thread
Hi all, what is the main diff between at new and on change of statements. Regards Saroja.
Differnce between AT NEW AND ON CHANGE OF
Posted on: 06.05.2006 10:55, by user: Raja Sekhar T -- Relevance: 44% -- Show all results within this thread
Hi, Differnce between AT NEW AND ON CHANGE OF Iam waiting foryour reply Thanks & Regards Raja Sekhar.T ...
Regards,
Clemens

Similar Messages

Difference between At new and on change statement?

What is the difference between at new and on change statement? Please explain with an example.

hi
on change of differs from at new in the following respects:
It can be used in any loop construct, not just loop at. For example, it can be used within select and endselect, do and enddo, or while and endwhile, as well as inside get events.
A single on change of can be triggered by a change within one or more fields named after of and separated by or. These fields can be elementary fields or field strings. If you are within a loop, these fields do not have to belong to the loop.
When used within a loop, a change in a field to the left of the control level does not trigger a control break.
When used within a loop, fields to the right still contain their original values; they are not changed to contain zeros or asterisks.
You can use else between on change of and endon.
You can use it with loop at it where . . ..
You can use sum with on change of. It sums all numeric fields except the one(s) named after of.
Any values changed within on change of remain changed after endon. The contents of the header line are not restored as they are for at and endat.
REGARDS
PRASANTH

Difference between AT NEW and ON CHANGE

difference between AT NEW and ON CHANGE

HI,
at new is controlbreak statment and on change of is not and we can use onchange of out side the loop
and on at nnwe the left side feild change the event
trigers and the values become 0 and *
-->1.It can be used in any loop construct, not just loop at.
For example, it can be used within select and endselect, do
and enddo, or while and endwhile, as well as inside get events.
2. A single on change of can be triggered by a change within
one or more fields named after of and separated by or. These
fields can be elementary fields or field strings. If you are
within a loop, these fields do not have to belong to the loop.
3.When used within a loop, a change in a field to the left
of the control level does not trigger a control break.
4.When used within a loop, fields to the right still contain
their original values; they are not changed to contain zeros
or asterisks.
5.You can use else between on change of and endon.
6.You can use it with loop at it where . . ..
7. You can use sum with on change of. It sums all numeric
fields except the one(s) named after of.
8.Any values changed within on change of remain changed
after endon. The contents of the header line are not
restored as they are for at and endat
regards,
vineela.

Difference btwn at new and on change of

Hi all,
can i know the difference between 'at new' and 'on change of'.

Hi,
at new - > means inside the loop, the new value.
eg :
1
1
2
3
4
5
5
loop at itab
at new matnr
write matnr.
end at.
end loop.
1
2
3
4
5
On change of -> chnage of particular value inside the loop.
The Major Difference is :
a) When AT NEW occurs,
the alpha-numeric fields have ******* in their value,
b) where as in case of ON CHANGE,
the alpha-numeric fields have their corresponding value,
of that particular record,
where the Event gets fired.
Other differences are :
ON CHANGE OF can be used any where in the program..
on change of differs from at new in the following respects:
1.It can be used in any loop construct, not just loop at. For example, it can be used within select and endselect, do and enddo, or while and endwhile, as well as inside get events.
2.A single on change of can be triggered by a change within one or more fields named after of and separated by or. These fields can be elementary fields or field strings. If you are within a loop, these fields do not have to belong to the loop.
3.When used within a loop, a change in a field to the left of the control level does not trigger a control break.
4.When used within a loop, fields to the right still contain their original values; they are not changed to contain zeros or asterisks.
5.You can use else between on change of and endon.
6.You can use it with loop at it where . . ..
7.You can use sum with on change of. It sums all numeric fields except the one(s) named after of.
8.Any values changed within on change of remain changed after endon. The contents of the header line are not restored as they are for at and endat.
while
AT NEW can be used only within a loop of an INTERNAL TABLE..
5. Sample program to get the taste of it
(just copy paste)
6.
REPORT ABC.
DATA : BEGIN OF ITAB OCCURS 0,
bukrs like t001-bukrs,
f1(10) type c,
end of itab.
itab-bukrs = '1000'.
itab-f1 = '1111111'.
append itab.
itab-bukrs = '1100'.
itab-f1 = '3333333'.
append itab.
itab-bukrs = '1200'.
itab-f1 = '555555'.
append itab.
AT NEW
loop at itab.
at new bukrs.
write :/ itab-bukrs , itab-f1.
endat.
endloop.
AT ONCHANGE
loop at itab.
ON CHANGE OF ITAB-BUKRS.
write :/ itab-bukrs , itab-f1.
ENDON.
Regards,
Ferry Lianto

What is the perfect defference between AT NEW and ON CHANGE...

What is the perfect defference between AT NEW and ON CHANGE...?

hi vijay,
if u use 'at-new' statement , basically it dont pick first record of the itab where as 'on chage of' can pick from first record.
all these control brake statements can work with header line except 'on change of' event.
regards..
seshu.
Jogdand M B
Hi,
At New.
Effect
Beginning or end of a group of lines with the same content in the component comp1 comp2 ... and in the components to the left of comp1 comp2 .... The components comp1 comp2 ... can be specified, as described in the section Specification of Components, with the limitation that access to object attributes is not possible here.
Example:
LOOP AT itab result ...
    [AT NEW comp1.
     ENDAT.
endloop.
On Change of:
Effect:
The statements ON CHANGE OF and ENDON, which are forbidden in classes, define a control structure that can contain a statement block statement_block. After ON CHANGE OF, any number of data objects dobj1, dobj2... of any data type can be added..
Example:
In a SELECT loop, a statement block should only be executed if the content of the column CARRID has changed.
DATA spfli_wa TYPE spfli.
SELECT *
       FROM spfli
       INTO spfli_wa
       ORDER BY carrid.
ON CHANGE OF spfli_wa-carrid.
ENDON.
ENDSELECT.

Differnce between AT NEW AND ON CHANGE OF

Hi,
Differnce between AT NEW AND ON CHANGE OF
Iam waiting foryour reply
Thanks & Regards
Raja Sekhar.T

Hai Raja
check the following Documents
1. AT NEW f.
2. AT END OF f.
3. AT FIRST.
4. AT LAST.
5. AT fg.
Effect
In a LOOP which processes a dataset created with EXTRACT , you can use special control structures for control break processing. All these structures begin with AT and end with ENDAT . The sequence of statements which lies between them is then executed if a control break occurs.
You can use these key words for control break processing with extract datasets only if the active LOOP statement is proceesing an extract dataset.
The control level structure with extract datasets is dynamic. It corresponds exactly to the sort key of the extract dataset, i.e. to the order of fields in the field group HEADER by which the extract dataset was sorted .
At the end of a control group ( AT END OF , AT LAST ), there are two types of control level information between AT and ENDAT :
If the sort key of the extract dataset contains a non-numeric field h (particularly in the field group HEADER ), the field CNT(h) contains the number of control breaks in the (subordinate) control level h .
For extracted number fields g (see also ABAP/4 number types ), the fields SUM(g) contain the relevant control totals.
Notes
The fields CNT(h) and SUM(g) can only be addressed after they have been sorted. Otherwise, a runtime error may occur.
The fields CNT(h) and SUM(g) are filled with the relevant values for a control level at the end of each control group ( AT END OF , AT LAST ), not at the beginning ( AT FIRST , AT NEW ).
When calculating totals with SUM(g) , the system automatically chooses the maximum field sizes so that an overflow occurs only if the absolute value area limits are exceeded.
You can also use special control break control structures with LOOP s on internal tables.
Variant 1
AT NEW f.
Variant 2
AT END OF f.
Effect
f is a field from the field group HEADER . The enclosed sequence of statements is executed if
the field f occurs in the sort key of the extract dataset (and thus also in the field group HEADER ) and
the field f or a superior sort criterion has a different value in the current LOOP line than in the prceding ( AT NEW ) or subsequent ( AT END OF ) record of the extract dataset.
Example
DATA: NAME(30),
 SALES TYPE I.
FIELD-GROUPS: HEADER, INFOS.
INSERT: NAME INTO HEADER,
 SALES INTO INFOS.
LOOP.
AT NEW NAME.
 NEW-PAGE.
ENDAT.
AT END OF NAME.
 WRITE: / NAME, SUM(SALES).
ENDAT.
ENDLOOP.
Notes
If the extract dataset is not sorted before processing with LOOP , no control level structure is defined and the statements following AT NEW or AT END OF are not executed.
Fields which stand at hex zero are ignored by the control break check with AT NEW or AT END OF . This corresponds to the behavior of the SORT statement, which always places unoccupied fields (i.e. fields which stand at hex zero) before all occupied fields when sorting extract datasets, regardless of whether the sort sequence is in ascending or descending order.
Variant 3
AT FIRST.
Variant 4
AT LAST.
Effect
Executes the relevant series of statements just once - either on the first loop pass (with AT FIRST ) or on the last loop pass (with AT LAST ).
Variant 5
AT fg.
Addition
... WITH fg1
Effect
This statement makes single record processing dependent on the type of extracted record.
The sequence of statements following AT fg are executed whenever the current LOOP record is created with EXTRACT fg (in other words: when the current record is a fg record).
Addition
... WITH fg1
Effect
Executes the sequence of statements belonging to AT fg WITH fg1 only if the record of the field group fg in the dataset is immediately followed by a record of the field group fg1 .
Basic form
ON CHANGE OF f.
Addition
... OR f1
Effect
Executes the processing block enclosed by the " ON CHANGE OF f " and " ENDON " statements whenever the contents of the field f change (control break processing).
Normally, you use the statement to manipulate database fields during GET events or SELECT / ENDSELECT processing.
Note
There are special control structures for processing control breaks in LOOP s on internal tables or extract datasets AT ).
ON CHANGE OF is unsuitable for recognizing control levels in loops of this type because it always creates a global auxiliary field which is used to check for changes. This global auxiliary field can only be changed in the relevant ON CHANGE OF statement. It is not reset when the processing goes into loops or subroutines, so unwanted effects can occur if the loop or subroutine is executed again. Also, since it is set to its initial value when created (like any other field), any ON CHANGE OF processing will be executed after the first test, unless the contents of the field concerned happen to be identical to the initial value.
Example
TABLES T100.
SELECT * FROM T100 WHERE SPRSL = SY-LANGU AND
 MSGNR < '010'
 ORDER BY PRIMARY KEY.
ON CHANGE OF T100-ARBGB.
 ULINE.
 WRITE: / '**', T100-ARBGB, '**'.
ENDON.
WRITE: / T100-MSGNR, T100-TEXT.
ENDSELECT.
Displays all messages with their numbers in the logon language, provided the number is less than '010'.
Each time the message class changes, it is output.
Addition
... OR f1
Effect
Also executes the code whenever the contents of the field f1 changes.
You can use this addition several times.
Example
Logical database F1S
TABLES: SPFLI, SFLIGHT, SBOOK.
GET SBOOK.
ON CHANGE OF SPFLI-CARRID OR
 SPFLI-CONNID OR
 SFLIGHT-FLDATE.
 ULINE.
 WRITE: /5 SPFLI-CARRID, SPFLI-CONNID,
 5 SFLIGHT-FLDATE, SPFLI-FLTIME,
 5 SFLIGHT-SEATSMAX, SFLIGHT-SEATSOCC.
ENDON.
WRITE: / SBOOK-CUSTOMID.
The code between ON CHANGE OF and ENDON is executed only if at least one of the fields SPFLI-CARRID , SPFLI-CONNID or SFLIGHT-FLDATE has changed, i.e. there is a different flight connection (which also has bookings).
Notes
Thanks & regards
Sreenivasulu P

DIFFERENCE BETWEEN "AT NEW " AND "AT FIRST" , "AT END OF" AND "AT LAST" ?

WHAT IS THE DIFFERENCE BETWEEN "AT NEW " AND "AT FIRST" , "AT END OF" AND "AT LAST" WITH REFERENCE TO CONTROL BREAK STATEMENTS ? PLEASE EXPLAIN IN DETAIL.
BEST REGARDS
RYAN.

Hi
i am sending you a simple program in which i had write program on that events
you can understand very easily
Using AT FIRST , AT NEW, AT THE END OF , AT LAST.
DATA: BEGIN OF ITAB OCCURS 0,
 F1 TYPE I,
 F2(6) TYPE C,
 F3(10) TYPE N,
 F4(16) TYPE P DECIMALS 2,
 END OF ITAB.
DATA: SUB_TOT(10) TYPE P DECIMALS 3.
**--1
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 30.
ITAB-F4 = '3000.00'.
APPEND ITAB.
CLEAR ITAB.
*--2
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
*-- 3
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
SORT ITAB BY F1.
LOOP AT ITAB.
AT FIRST.
WRITE: /35 ' MATERIAL DETAILS:'.
ULINE.
ENDAT.
AT NEW F1.
WRITE: / 'DETAILS OF MATERIAL:' COLOR 7 , ITAB-F1.
ULINE.
ENDAT.
WRITE: / ITAB-F1, ITAB-F2, ITAB-F3, ITAB-F4.
SUB_TOT = SUB_TOT + ITAB-F4.
AT END OF F1.
ULINE.
WRITE: / 'SUB TOTAL :' COLOR 3 INVERSE ON, SUB_TOT COLOR 3 INVERSE ON.
CLEAR SUB_TOT.
ENDAT.
AT LAST.
SUM.
ULINE.
WRITE: 'SUM:', ITAB-F4.
ULINE.
ENDAT.
ENDLOOP.
Using AT FIRST , AT NEW, AT THE END OF , AT LAST.
DATA: BEGIN OF ITAB OCCURS 0,
 F1 TYPE I,
 F2(6) TYPE C,
 F3(10) TYPE N,
 F4(16) TYPE P DECIMALS 2,
 END OF ITAB.
DATA: SUB_TOT(10) TYPE P DECIMALS 3.
**--1
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 30.
ITAB-F4 = '3000.00'.
APPEND ITAB.
CLEAR ITAB.
*--2
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
*-- 3
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
SORT ITAB BY F1.
LOOP AT ITAB.
AT FIRST.
WRITE: /35 ' MATERIAL DETAILS:'.
ULINE.
ENDAT.
AT NEW F1.
WRITE: / 'DETAILS OF MATERIAL:' COLOR 7 , ITAB-F1.
ULINE.
ENDAT.
WRITE: / ITAB-F1, ITAB-F2, ITAB-F3, ITAB-F4.
SUB_TOT = SUB_TOT + ITAB-F4.
AT END OF F1.
ULINE.
WRITE: / 'SUB TOTAL :' COLOR 3 INVERSE ON, SUB_TOT COLOR 3 INVERSE ON.
CLEAR SUB_TOT.
ENDAT.
AT LAST.
SUM.
ULINE.
WRITE: 'SUM:', ITAB-F4.
ULINE.
ENDAT.
ENDLOOP.
Reward if usefull

Difference between the new and old airport express

Have an airport express bought in the summer of 2004. It extends my home network and have never had any trouble with it. (Still using system x3.9 ). Everything is stable. Calm. If I were to buy a new airport express today, do I understand right that it would not work with my current system? What's the difference between the newer airport express and the one I have?

I don't think there's much of a difference between the old Express and the new one. The only difference for sure, will probably be the Airport software, which is at its current version (I forget which). I too, bought my Airport Express when it first came out and I'm running software 6.1.1 on it, I think the newest is at 6.4 now or something like that.
Only reason why it wouldn't work with your system is most like due to the updated software. The tech specs doesn't really say 10.4 or higher is required, but it looks like it's suggested to use the features such as USB printing, etc. http://www.apple.com/airportexpress/specs.html

Diff between AT new and on change of

hi,
can any one tell me what is the exact difference between AT new and on change of
thanks
pavan

hi
good
In a LOOP which processes a dataset created with EXTRACT, you can use special control structures for control break processing. All these structures begin with AT and end with ENDAT. The sequence of statements which lies between is executed whenever a control break occurs.
You can use these key words for control break processing with extract datasets only if the active LOOP statement is processing an extract dataset.
The control level structure with extract datasets is dynamic. It corresponds exactly to the sort key of the extract dataset, i.e. to the order of fields in the field group HEADER by which the extract dataset was sorted.
At the end of a control group ( AT END OF, AT LAST), there are two types of control level information between AT and ENDAT:
If the sort key of the extract dataset contains a non-numeric field h (particularly in the field group HEADER), the field CNT(h) contains the number of control breaks in the (subordinate) control level h.
For extracted number fields g (see also ABAP Number Types), the fields SUM(g) contain the relevant control totals.
Notes
The fields CNT(h) and SUM(g) can only be addressed after they have been sorted. Otherwise, a runtime error may occur.
The fields CNT(h) and SUM(g) are filled with the relevant values for a control level at the end of each control group ( AT END OF, AT LAST), not at the beginning (AT FIRST, AT NEW).
When calculating totals with SUM(g), the system automatically chooses the maximum field sizes so that an overflow occurs only if the absolute value area limits are exceeded.
You can also use special control break control structures with LOOPs on internal tables.
Variant 1
AT NEW f.
Variant 2
AT END OF f.
Effect
f is a field from the field group HEADER. The enclosed sequence of statements is executed if
the field f occurs in the sort key of the extract dataset (and thus also in the field group HEADER) and
the field f or a superior sort criterion has a different value in the current LOOP line than in the preceding (AT NEW) or subsequent (AT END OF) record of the extract dataset.
If f is not an assigned field symbol, the control break criterion is ignored, and the subsequent sequence of statements is not executed. If a field symbol is assigned, but does not point to the HEADER field group, the system triggers a runtime error.
Example
DATA: NAME(30),
 SALES TYPE I.
FIELD-GROUPS: HEADER, INFOS.
INSERT: NAME INTO HEADER,
 SALES INTO INFOS.
LOOP.
AT NEW NAME.
 NEW-PAGE.
ENDAT.
AT END OF NAME.
 WRITE: / NAME, SUM(SALES).
ENDAT.
ENDLOOP.
Notes
If the extract dataset is not sorted before processing with LOOP, no control level structure is defined and the statements following AT NEW or AT END OF are not executed.
Fields which stand at hex zero are ignored by the control break check with AT NEW or AT END OF. This corresponds to the behavior of the SORT statement, which always places unoccupied fields (i.e. fields which stand at hex zero) before all occupied fields when sorting extract datasets, regardless of whether the sort sequence is in ascending or descending order.
Variant 3
AT FIRST.
Variant 4
AT LAST.
Effect
Executes the relevant series of statements just once - either on the first loop pass (with AT FIRST) or on the last loop pass (with AT LAST).
Variant 5
AT fg.
Addition:
... WITH fg1
Effect
This statement makes single record processing dependent on the type of extracted record.
The sequence of statements following AT fg are executed whenever the current LOOP record is created with EXTRACT fg (in other words: when the current record is a fg record).
Addition
... WITH fg1
Effect
Executes the sequence of statements belonging to AT fg WITH fg1 only if the record of the field group fg in the dataset is immediately followed by a record of the field group fg1.
thanks
mrutyun^

Difference between "All New" and "All Unplayed"? [podcast section]

What's the difference between these two settings under the podcast section?
I have no idea, they seem like they would be the same?

Right. Suppose you have 5 podcasts on a given subscription. You've listened to the most recent one.
3 newest would be the three newest, including the one you've listened to.
3 most recent unplayed would be the second, third, and fourth ones - not the oldest one (because you're only getting three), but not the newest one, because that one has already been played.

What is the difference between the new and old 30gigs

i have an old what is the other differences other than the search function like how much longer does the battery last?

These Specification comparisons might help with the difference between these two models:
Fifth Generation iPod - Technical Specifications
Fifth Generation iPod (Late 2006) - Technical Specifications
-Kylene

What is the difference between the new and old ipad mini case?

I was wondering what the difference is between the old ipad mini case and the new one which came out with the ipad mini with retina display?

I just bought an iPad Mini case for my iPad Mini with Retina Display, and it DOES NOT FIT... This particular case has a hard plastic cradle for the iPad to fit into and it does not wrap around the edges enough to hold it in... I am shocked at how snug these cases will fit, even though there is only a 0.01" difference in thickness... So again, I repeat, an iPad Mini with Retina Display WILL NOT FIT into the first gen iPad Mini case!

Diff between at-new and on-change of in loop events

diff between at-new and on-change of in loop events

Hello,
ON CHANGE OF f.
Normally, you use the statement to manipulate database fields during GET events or SELECT/ENDSELECT processing.
AT NEW
There are special control structures for processing control breaks in LOOP s on internal tables or extract datasets (AT).
ON CHANGE OF f.
Executes the processing block enclosed by the "ON CHANGE OF f" and "ENDON" statements whenever the contents of the field f change (control break processing).
Normally, you use the statement to manipulate database fields during GET events or SELECT/ENDSELECT processing.
ON CHANGE OF is unsuitable for recognizing control levels in loops of this type because it always creates a global auxiliary field which is used to check for changes. This global auxiliary field is only changed in the relevant ON CHANGE OF statement. It is not reset when the processing enters loops or subroutines, so unwanted effects can occur if the loop or subroutine is executed again. Also, since it is set to its initial value when created (like any other field), any ON CHANGE OF processing will be executed after the first test, unless the contents of the field concerned happen to be identical to the initial value.
Example
TABLES T100.
SELECT * FROM T100 WHERE SPRSL = SY-LANGU AND
 MSGNR < '010'
 ORDER BY PRIMARY KEY.
ON CHANGE OF T100-ARBGB.
 ULINE.
 WRITE: / '**', T100-ARBGB, '**'.
ENDON.
WRITE: / T100-MSGNR, T100-TEXT.
ENDSELECT.
Displays all messages with their numbers in the logon language, provided the number is less than '010'.
Each time the message class changes, it is output.
AT NEW f.
f is a field from the field group HEADER. The enclosed sequence of statements is executed if the field f occurs in the sort key of the extract dataset (and thus also in the field group HEADER) and the field f or a superior sort criterion has a different value in the current LOOP line than in the preceding (AT NEW) or subsequent (AT END OF) record of the extract dataset.
If f is not an assigned field symbol, the control break criterion is ignored, and the subsequent sequence of statements is not executed. If a field symbol is assigned, but does not point to the HEADER field group, the system triggers a runtime error.
Example
DATA: NAME(30),
 SALES TYPE I.
FIELD-GROUPS: HEADER, INFOS.
INSERT: NAME INTO HEADER,
 SALES INTO INFOS.
LOOP.
AT NEW NAME.
 NEW-PAGE.
ENDAT.
AT END OF NAME.
 WRITE: / NAME, SUM(SALES).
ENDAT.
ENDLOOP.
Notes
If the extract dataset is not sorted before processing with LOOP, no control level structure is defined and the statements following AT NEW or AT END OF are not executed.
Reward if helpful,
Regards,
LIJO

Difference between AT NEW ..... and ON CHANGE events

difference between AT NEW and ON Change events..
Thanks

Hi
AT NEW
|{END OF} comp
Beginning or end of a group of lines with the same content in the component comp1 comp2 ... and in the components to the left of comp1 comp2 .... The components comp1 comp2 ... can be specified, as described in the section Specification of Components, with the limitation that access to object attributes is not possible here.
ON CHANGE OF
ON CHANGE OF dobj [OR dobj1 [OR dobj2] ... ].
statement_block
ENDON.
The statements ON CHANGE OF and ENDON, which are forbidden in classes, define a control structure that can contain a statement block statement_block. After ON CHANGE OF, any number of data objects dobj1, dobj2... of any data type can be added, linked by OR.
The first time a statement ON CHANGE OF is executed, the statement block is executed if at least one of the specified data objects is not initial. The statement block is executed for each additional execution of the same statement ON CHANGE OF, if the content of one of the specified data objects has been changed since the last time the statement ON CHANGE OF was executed.
For each time the statement ON CHANGE OF is executed, the content of all the specified data objects is saved as an auxiliary variable internally in the global system. The auxiliary variable is linked to this statement and cannot be accessed in the program. The auxiliary variables and their contents are retained longer than the lifetime of procedures. An auxiliary variable of this type can only be initialized if its statement ON CHANGE OF is executed while the associated data object is initial.
This control structure, which is forbidden in classes, is particularly prone to errors and should be replaced by branches with explicitly declared auxiliary variables.
example:-
Using AT FIRST , AT NEW, AT THE END OF , AT LAST.
DATA: BEGIN OF ITAB OCCURS 0,
 F1 TYPE I,
 F2(6) TYPE C,
 F3(10) TYPE N,
 F4(16) TYPE P DECIMALS 2,
 END OF ITAB.
DATA: SUB_TOT(10) TYPE P DECIMALS 3.
**--1
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 1.
ITAB-F2 = 'ONE'.
ITAB-F3 = 30.
ITAB-F4 = '3000.00'.
APPEND ITAB.
CLEAR ITAB.
*--2
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 2.
ITAB-F2 = 'TWO'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
*-- 3
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 10.
ITAB-F4 = '1000.00'.
APPEND ITAB.
CLEAR ITAB.
ITAB-F1 = 3.
ITAB-F2 = 'THREE'.
ITAB-F3 = 20.
ITAB-F4 = '2000.00'.
APPEND ITAB.
CLEAR ITAB.
SORT ITAB BY F1.
LOOP AT ITAB.
AT FIRST.
WRITE: /35 ' MATERIAL DETAILS:'.
ULINE.
ENDAT.
AT NEW F1.
WRITE: / 'DETAILS OF MATERIAL:' COLOR 7 , ITAB-F1.
ULINE.
ENDAT.
WRITE: / ITAB-F1, ITAB-F2, ITAB-F3, ITAB-F4.
SUB_TOT = SUB_TOT + ITAB-F4.
AT END OF F1.
ULINE.
WRITE: / 'SUB TOTAL :' COLOR 3 INVERSE ON, SUB_TOT COLOR 3 INVERSE ON.
CLEAR SUB_TOT.
ENDAT.
AT LAST.
SUM.
ULINE.
WRITE: 'SUM:', ITAB-F4.
ULINE.
ENDAT.
ENDLOOP.

At new and on change of

Hi Friends,
can any one explain ,
1) what is main difference between at new and on change of
control break statements...
2) in which situation we are supposed use on change of control beark.
cheers,

Vijay ,
Control Break Event AT- NEW :
Event AT-NEW will be triggered whenever the control level changes or any field prior to the control level changes.
For Example:
DATA : BEGIN OF IT_TAB OCCURS 0,
A(5),
B(5),
C(5),
END OF ITAB.
Insert some Values to the internal table.
SORT IT_TAB.
LOOP AT IT_TAB,
AT NEW A.
<Only when value of A Changes.>
ENDAT
AT NEW B.
<When Combined vales of A & B Changes i.e either A or B Or both>.
ENDAT.
1) Sorting of the INTERNAL TABLE is necessary.
2) You cannot use multiple fields in AT-NEW statement.
3) Between AT-NEW and ENDAT the content of work area will not contain any value
4) If you change the value of a work area within AT-NEW and ENDAT your changes will be lost after the ENDAT statement.
5) When AT NEW occurs, the alpha-numeric fields have ******* in their value
6) Can be used in ABAP objects
ON-CHANGE-OF :
On Change of will be triggered whenever the control level changes.
It won't be triggered when the field prior to the control level change.
For Example:
DATA : BEGIN OF IT_TAB OCCURS 0,
A(5),
B(5),
C(5),
END OF ITAB.
Insert some Values to the Internal table.
LOOP AT IT_TAB,
On CHANGE OF B.
< Every time a value of B changes >
ENDON.
ENDLOOP.
1) Sorting of the INTERNAL TABLE is NOT necessary.
2) Mutilpe Fields are used in ON-CHANGE-OF
3) It can be used in any loop construct, not just loop at. For example, it can be used within select and endselect, do and enddo, or while and endwhile, as well as inside get events.
4) In ON CHANGE,the alpha-numeric fields have their corresponding value, of that particular record, where the Event gets fired.
5) When used within a loop, a change in a field to the left of the control level does not trigger a control break.
6) You can use else between on change of and endon.
7) You can use it with loop at it where . . ..
8) cannot be used in ABAP objects
Regards,
Shiv.G.Sethu

Difference between At-new and on change of

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