Differnce between Modify table and append table

Hi Abappers,
What is the major differnce between the following 2?
a)G_T_PROD-G_OP_INV_KG = G_OP_INV1.
MODIFY G_T_PROD INDEX G_READ_INDEX.
b)G_T_PROD-G_OP_INV_KG = G_OP_INV1.
APPEND G_T_PROD.

Hi Mansi Maskeri,
Append Statement :
This statement helps in adding the record at the bottom of the internal table.
Example : append wa_tab to it_tab.
This adds the record at the end of the internal table it_tab.
Modify statement :
This statement helps in changing the existing record at the specified index.
For example:
modify it_tab index 3.
This modifies the internal it_tab record which is present at the 3 position.
Regards.

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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

Differnce between DB Backup and generate Script

whats the differnce between DB Backup and generating Script of a database.
Please mention the main diffrence as we know while genearating script we can select tables/procedures of our choice instead of having all while in backup it takes full tables and procedures.

Hi Abhishek,
In addition to others’ posts, we need to know that there are different types of
backup in SQL Server, such as full backup, differential backup, log back up, file backup and so on. It is recommended to back up database on a regular basis, as a well-planned backup
and restore strategy helps protect databases against data loss caused by a variety of failures. You can make
maintenance plans to back up database automatically.
However, generating scripts is not a disaster recovery option. If you encounter some failures about database, you cannot get data back by generating scripts.
Thanks,
Lydia Zhang

Difference between include structure and Append structure

Could you please tell me
I have bsis table and it contains append structure in 4.7 SAP System.
my program in 4.7 system contains internal table which used same structure of bsis table ( which contains additonal field in its append structure ).
I need to have same table structure in 4.6 C because I am copying the same program into 4.6 system.
As I could not append structure to bsis table in 4.6C SAP system,
instead of that shall I add the field or Shall include the structure to run .
What is the difference between Include structure and Append structure ( I forgot )
How to achieve this please help me ?

Hi ,
As you know append structure can be used only once in table ,that to at last of all entries,
Append structures are used for enhancements that are not included in the standard. This includes special developments, country versions and adding customer fields to any tables or structures.
An append structure is a structure that is assigned to exactly one table or structure. There can be more than one append structure for a table or structure.
The following enhancements can be made to a table or structure TAB with an append structure:
Insert new fields in TAB,
Define foreign keys for fields of TAB that already exist,
Attach search helps to fields of TAB that already exist,
These enhancements are part of the append structure, i.e. they must always be changed and transported with the append structure.
When a table or structure is activated, all the append structures of the table are searched and the fields of these append structures are added to the table or structure. Foreign keys and search help attachments added using the append structure are also added to the table. If an append structure is created or changed, the table or structure assigned to it is also adjusted to these changes when the append structure is activated.
Since the order of the fields in the ABAP Dictionary can differ from the order of the fields on the database, adding append structures or inserting fields in such append structures does not result in a table conversion.
The customer creates append structures in the customer namespace. The append structure is thus protected against overwriting during an upgrade. The fields in the append structure should also reside in the customer namespace, that is the field names should begin with ZZ or YY. This prevents name conflicts with fields inserted in the table by SAP.
The new versions of the standard tables are imported after an upgrade, and the fields, foreign key definitions and search help attachments contained in the append structures are added to the new standard tables at activation.
A standard table contains the fields Field 1, Field 2 and Field 3. An append structure containing the fields ZZA and ZZB is defined for this table. After activating the table, the corresponding database table contains fields Field 1, Field 2, Field 3, ZZA and ZZB.
Further Remarks:
An append structure can only be assigned to exactly one table or structure. If you want to append the same fields to several tables or structures, you can store these fields in an include structure. In this case you must create an append structure for each of these tables or structures and include the include structure there.
Adding an append structure to an SAP standard table is supported by the Modification Assistant.
If you want to insert a field that is to be delivered with the R/3 standard in the next Release in the customer system in advance, you must include it in the table itself as a repair. If you include such a field in an append structure for the table, it will occur twice when the new standard table is imported. This will result in an activation error.
No append structures may be added to tables with long fields (data types VARC, LCHR or LRAW). This is because a long field must always be the last field in the table. However, structures with long fields can be enhanced with append structures.
If a table or structure with an append structure is copied, the fields of the append structure become fields of the target table. Foreign key definitions and search help attachments appended with the append structure are copied to the target table.
Foreign keys for the appended fields must be defined within the append structure. Fields of the table or structure assigned to the append structure may be defined when assigning the key field and foreign key field.
Indexes on the appended fields must be defined in the original table.
A table or structure TAB can only be enhanced with new foreign keys or search help attachments using an append structure. You therefore cannot change an existing foreign key definition or search help attachment for a field of TAB with the append structure.
Thanks
Manju

Differnce between SAP-XI and SAP PI

hi can any body tell me what is the differnce between SAP-XI and SAP-PI

Hi vijay,
u can get lot of information regarding PI and XI in sdn.There already exists a no. of thread.just search with keyword "XI 3.0 and PI 7.0" u can get a lot.
XI 3.0
1. J2Se adapter engine was replaced with J2EE Adapter Engine.
2. BPM was available from XI 3.0
3. Part of Netweaver 2004
PI 7.0
1XI renames as Process Integration
2.. Part of Netweaver 2004s.
3. Has all features of XI 3.0 and every SP of Pi 7.0 has a corresponding release for XI 3.0.
4. Runs on WAS 7.0 and has same features as XI 3,0
From functional point, there is no difference between XI3.0 and PI7.0. There are changes only wrt SP. For every SP release on PI7.0 a corresponding SP for XI3.0 is also released.
A comparision of the service packs in 2004 and 2004s;
in 2004 - in 2004s
SP12 & < - SP04
SP13 + 14 - SP05
SP15 - SP06
SP16 - SP07
SP17 - SP08
SP18 - SP09
For release notes
ref:http://help.sap.com/saphelp_nw04/helpdata/en/cf/9844428e9cbe30e10000000a155106/frameset.htm
There is no f'nal difference between XI 3.0 and PI 7.0. In order to bring all netweaver releases on par with each other , SAP released / renamed XI as PI and it is a part of NW04s
For every release of PI 7.0, there is a parallel Support Pack on XI.
<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/706005a3-3bd6-2910-91ae-a2016239bdcf">SAP NetWeaver Process Integration 7.1 Overview of New Capabilities</a>
Also check these threads.
Difference between NetWeaver 2004 and NetWeaver 7.0 or 7.1
All the diff between XI 3.0 and PI 7.0
differences between xi 3.0 and pi 7.0
Difference/ changes from XI 3.0 to PI 7.0
regards
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Differnce between business name and physical name

What is the differnce between business name and physical name in OWB

Hi Vibhuti,
What I have noticed is that Physical name is THE important thing that is required while importing and synchronising. It has a length limitation of 30. The mappings appear with this name in the left panel in design center. The Business name is just for reference I believe.
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What is the differnce between Blue,Purple and Orange Audio Tracks. Can you convert either to Green Midi Track?

What is the differnce between Blue,Purple and Orange Audio Tracks. Can you convert either to Green Midi Track?

Are you asking about Garageband? Your signature also mentions Logic, but I have never worked with that.
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Real Instrument regions from your recordings are purple.
Real Instrument regions from Apple Loops are blue.
Regions from imported audio files are orange.
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Differnce between type f and type p?

Hi All,
What is the Differnce between type f and type p?
Regard,
Mike

Hi Mike
Differnce bw type F and type P:-
Packed numbers - type P
Type P data allows digits after the decimal point. The number of decimal places is generic, and is determined in the program. The value range of type P data depends on its size and the number of digits after the decimal point. The valid size can be any value from 1 to 16 bytes. Two decimal digits are packed into one byte, while the last byte contains one digit and the sign. Up to 14 digits are allowed after the decimal point. The initial value is zero. When working with type P data, it is a good idea to set the program attribute Fixed point arithmetic.Otherwise, type P numbers are treated as integers.
You can use type P data for such values as distances, weights, amounts of money, and so on.
Floating point numbers - type F
The value range of type F numbers is 1x10*-307 to 1x10*308 for positive and negative numbers, including 0 (zero). The accuracy range is approximately 15 decimals, depending on the floating point arithmetic of the hardware platform. Since type F data is internally converted to a binary system, rounding errors can occur. Although the ABAP processor tries to minimize these effects, you should not use type F data if high accuracy is required. Instead, use type P data.
You use type F fields when you need to cope with very large value ranges and rounding errors are not critical.
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T ---> time
X ---> hexadecimal
I ---> integer.
N ---> Muneric.
Reward pts if help.
Regards
Deepanker

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Differnce between byte[] reading and int[] reading

While reading information from file using fileInputStream ....
Is there any differnce between byte[] reading and int[] reading ?

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Difference between Customer Include and Append

Hi all,
We are using a special customer namespace /XXX/. Regarding to this I can not use the Customer Includes (CI_Include) in the SAP tables anymore to add own fields.
To create my own fields anyway I create a append in the /XXX/ namespace and add my /XXX/fields to this Append.
It is working, but I want to know if there are situations where the use of an append instead of an include can cause errors?
What is the difference between include and append?
Thanks in advance for your help,
Fabian

Hi
NO, because they are the same thing, you use both includes to enhance a standard structure.
But the Append Include is only used in the structure where it's defined, CI_INCLUDE is used by enhancement so perhaps it can be used in many structures.
So you have to use CI_INCLUDE only if you need to you its enhancement.
If the name of include begin of CI_, you won't have any error if that include doesn't exist.
You can try to build a Z-TABLE and insert the include CI_ZMYINCLUDE after try to check your table: any errors'll occur.
The same this is for the include with the name begining with ZX...
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Differnces between BOM Calender and INV Calender

Hi,
Can some one please let me know what is the difference between BOM Calender and INV Calender.
Where do we assign BOM Calender??
Thanks,
Ravi

Hi,
Both are Work Day calendars only. Both are the same form and back end tables.
We assign the calendar in the INV org parameters setup.
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Differnce between null string and an empty string??

what is the major difference between null string and an empty string??
I wrote the following simple program and I could see some different output.
Other than that, any other differences that we should pay attention to???
C:\>java TestCode
Hello
nullHello
public class TestCode
     public static void main(String[] s)
     {     String s1 = "";
          String s2 = null;
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          System.out.println(s2 + "Hello");
}

There's a big difference between the two. A null String isn't pointing to an object, but an empty String is. For example, this is perfectly fine:
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        String s = "";
        System.out.println(s.length());
} It prints out 0 for the length of the String, just as it should. But this code will give you a NullPointerException:
public class TestCode
    public static void main(String[] args)
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Hi,
What are the difference between Oracle 9i And MS SQL Server 2000.
Thnaks

Some links
http://www.google.lv/search?hl=lv&q=oracle+sql+server+difference&meta=
http://asktom.oracle.com/pls/asktom/f?p=100:1:487512552646613::NO:RP::
http://www.mssqlcity.com/Articles/Compare/sql_server_vs_oracle.htm
http://www.wisdomforce.com/dweb/resources/docs/MSSQL2005_ORACLE10g_compare.pdf
But you have to remember one big thing - I've not seen yet one compare that was completely indifferent to any of the included DB's. So you can be sure that every doc that you get on MS website will say that SQL server is better, every doc on Oracle website will say that Oracle is better. Every doc on other websites will say that better DB either is:
1) DB that has payed for the reserach paper
2) DB that was mostly used by the researchers
So of course you should be very cautious about each paper you get.
Gints Plivna
http://www.gplivna.eu

Differnce between 'GATHER EMPTY' and 'GATHER STALE'

Hey experts,
what is the exact differnce between below 2 statements,
1st
dbms_stats.GATHER_SCHEMA_STATS( user , method_opt => 'FOR ALL COLUMNS SIZE AUTO', options => 'GATHER EMPTY' , degree => 4 ) ;2nd
dbms_stats.GATHER_SCHEMA_STATS( user , method_opt => 'FOR ALL COLUMNS SIZE AUTO', options => 'GATHER STALE' , degree => 4 ) ;

From GATHER_SCHEMA_STATS documentation :
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GATHER EMPTY: Gathers statistics on objects which currently have no statistics. also, return a list of objects found to have no statistics.

Differnce between Modify table and append table

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