Move vs move corresponding

which is preferrable between move and move-corresponding  based on performance issues?

the general performance recommendation is the following:
Never use move-corresponding with buffered tables, the overhead can be similar as the buffered access itself.
For database selects, the select itself is more expensive than the move corresponding. The decision come from the decision whether you want to use a fieldlist or a SELECT *. Fieldlists are recommended for very width tables, if the fieldlist reduces the width by a factor 2. Fieldlist must be used if your INTO structure is different from the table structure. In these 2 cases, you should use MOVE-CORRESPONDING.
Siegfried

Similar Messages

  • Move n move corresponding

    frends please provide me the detail document and scenarios where we use with examples about move and move corresponding  statements?

    Hi,
    Please check this.
    Assigning Values with MOVE:
    To assign the value of a data object source to a variable destination, use the following statement:
    MOVE source TO destination.
    or the equivalent statement
    destination = source.
    The content of source remains unchanged, source does not therefore have to be a variable - it can also be a literal, a text symbol, or a constant. You must always specify decimal points with a period (.), regardless of the user’s personal settings.
    Multiple assignments
    f4 = f3 = f2 = f1.
    are also possible. ABAP processes them from right to left as follows:
    MOVE f1 TO f2.
    MOVE f2 TO f3.
    MOVE f3 TO f4.
    Assigning Values Between Components of Structures (MOVE-CORRESPONDING):
    The rules for value assignments between data objects also apply to structures. With the command
    DATA: struct1 TYPE structure,
          struct2 TYPE structure.
    struct1 = struct2.
    two structures of the same type can be assigned to one another without difficulty. Here, the entire source structure is seen as a unit and copied to the source structure. It is then possible to access the components individually again. If the structures in question are not compatible, see the conversion rules for structures.
    In practice, however, you will often only need to assign certain components of a structure to be certain components of another structure. ABAP has a special statement for this purpose:
    MOVE-CORRESPONDING sourcestruct TO destinationstruct.
    This statement assigns the contents of the components of structure sourcestruct to the components of the destinationstruct structure that have identical names.
    When it is executed, it is broken down into a set of MOVEstatements, one for each pair of fields with identical names, as follows:
    MOVE sourcestruct-comp1 TO destinationstruct-comp1.
    MOVE sourcestruct-comp2 TO destinationstruct-comp2.
    Regards,
    Ferry Lianto

  • Which is Performance wise better MOVE or MOVE CORRESPONDING ...

    Hi SAP-ABAP Experts .
    Which is Performance wise better ...
    MOVE or MOVE CORRESPONDING .
    Regards : Rajneesh

    > A 
    >
    > * access path and indexes
    Indexes and hence access paths are defined when you design the data model. They are part of the model design.
    > * too large numbers of records or executions
    consider a datawarehouse environment - you have to deal with huge loads of data. a Million records are considered "small" here. Terms like "small" or "large"  are depending on the context you are working in.
    If you never heard of Star transformation, Partitioning and Parallel Query you will get lost here!
    OLTP is different: you have short transactions, but a huge number of concurrent users.
    You would not even consider Bitmap indexes in an OLTP environment - but maybe a design that evenly distributes data blocks over several files for avoiding hot spots on heavily used tables.
    > * processing of internal tables => no quadratic coding
    >
    > these are the main performance issues!
    >
    > > Performance is defined at design time
    > partly yes, but more is determined during runtime, you must check everything at least once. Many things can go wrong and will go wrong.
    sorry, it's all about the data model design - sure you have to tune later in the development but you really can't tune successfully on a  BAD data model ... you have to redesign.
    If the model is good there is a chance the developers chooses the worst access to it , but then you have the potential to tune with success because your model allows for a better access strategy.
    The decisions you make in the design phase are detemining the potential for tuning later.
    >
    > * database does not what you expect
    I call this the black box view: The developer is not interested in the underlying database.
    Why we have different DB vendors if they would all behave the same way? I.e. compare concurrency
    and consistency implementations in various DB's - totally different.  You can't simply apply your working knowledge from one database to another DB product. I learned the hard way while implementing on INFORMIX and ORACLE...

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    Patti23 wrote:
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  • Imovie 10: how to move the (movie) library to an external drive

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