Update DB table with logic

HI All ,
I have table with records in DB which i need to modify from internal table via job.
if we start from scratch (fill the db table in the first time ) all the records should be valid
(column valid mark as abap_true)
in the next run if new data will come to the table the records should be valid automatically
and if some records are not occur in the second run the record in the table should be not valid
what is the best way to do that .
i give an example
in the first run i have users in the itab ( that update the db)
users    roles   valid_flag
user1    rol1      X
user1    rol2      X
user1    rol3      X
user2    rol1      X
user2    rol2      X
user2    rol3      X
This what i have in the internal table and what should be in the db table also .
in the next run i have in the itab
user1    rol1      X
user1    rol2      X
user1    rol4      X
user2    rol1      X
user2    rol5      X
user2    rol6      X
user3    rol1      X
user3    rol5      X
user3    rol3      X
so after the following run the table should look like .
users    roles   valid_flag
user1    rol1      X
user1    rol2      X
user1    rol3     
user1    rol4      X
user2    rol1      X
user2    rol2    
user2    rol3     
user2    rol5      X
user2    rol6      X
user3    rol1      X
user3    rol5      X
user3    rol3      X
The old records are not deleted there are just mark as not valid and if we have new records
they are inserted to the table with valid flag .
What is the best way to do that .
Regards
Chris

HI Anmol
its not that simple ...
I have table with records in DB which i need to modify from internal table via job.
if we start from scratch (fill the DB table in the first time ) all the records should be valid
(column valid mark as abap_true)
in the next run if new data will come to the table (it_new_usrs_data)  the new records should be valid automatically
and if some records are not occur (in it_new_usrs_data ) in the second run the record in the DB  table should be not valid .
You can see the the example in my first post .
What i want to avoid the select single in loop because of performance  the DB table can store more than 100000 records ...
Do you have diff idea ?
in the first run i have users in the itab ( that update the DB)
Assume that after the first run i this is the DB table that i read in the second run with the select to lt_copy_db
users roles valid_flag
user1 rol1 X
user1 rol2 X
user1 rol3 X
user2 rol1 X
user2 rol2 X
user2 rol3 X
In the next run of the job  i have in the internal table it_new_usrs_data
user1 rol1 X
user1 rol2 X
user1 rol4 X
user2 rol1 X
user2 rol5 X
user2 rol6 X
user3 rol1 X
user3 rol5 X
user3 rol3 X
so after the following run the DB  table should look like .
The o_ld records are not deleted_ there are just mark as not valid and if we have new records
they are inserted to the table with valid flag .
users roles valid_flag
user1 rol1 X
user1 rol2 X
user1 rol3
user1 rol4 X
user2 rol1 X
user2 rol2
user2 rol3
user2 rol5 X
user2 rol6 X
user3 rol1 X
user3 rol5 X
user3 rol3 X
Thanks
Chris
Edited by: Chris Teb on Jan 6, 2010 10:58 PM

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    If I use the Data generator operator and then expression operator (trunc (sysdate,'mm' ) it giving error. It says data generator operator should be connected to flat file .
    What other operators can I use to update the column with month begin data.
    Also which operator I have use to have sequence key in the table.
    Thanks

    you can always use a constant for the date field.
    just create a constant of type date and give it the value you want, trunc (sysdate,'mm' ) and connect it to your target column, Eff_updated_dt defined.
    you have a sequence operator that you can use to link to your "sequence key" as well.
    Borkur

  • Updating Oracle table with info from Sybase query

    I hope this is the correct forum for this question.
    I am fairly new to Java and JDBC. I am trying to figure out what the best method for updating information in Oracle tables with data from a Sybase table. I would prefer to use Oracle’s transparent gateway but this is not an option my company will pay for so I am creating a java stored procedure and using JDBC to connect to the Sybase database.
    The process I think I need to go thru is
    1.     Query an Oracle table to get the records that need to be updated and the “key” information to query the Sybase table with.
    2.     Use that result to query the Sybase database to get the fields that need to be updated in the Oracle table for those records.
    3.     Update the records on the Oracle table with the data from the Sybase query.
    I know I can just do this procedurally, row-by-row, but I was wondering if anyone knows of a way to accomplish this with SQL and no loops. Is there a way to make a result set available as a “SQL table” for another JDBC query?
    Basically what I would like to do is:
    OraQuery = “ select sybinfo from sometable where updated_date = null”;
    Statement orastmt1 = OraConn.createStatement();
    ResultSet Orars1 = orastmt1.executeQuery (OraQuery);
    SybQuery = “select update_date, sybinfo from sybtable where sybinfo = Orars1.sybinfo”;
    Statement sybstmt = SybConn.createStatement();
    ResultSet Sybrs = sybstmt1.executeQuery (SybQuery);
    OraUpdate = “update (select update_date from sometable, Sybrs where sometable.sybinfo = Sybrs.sybinfo) set update_date = Sybrs.update_date”;
    Statement orastmt2 = OraConn.createStatement();
    ResultSet Orars2 = orastmt2.executeQuery (OraUpdate);
    This may not be possible but if anyone has done something similar and wouldn’t mind sharing I would appreciate it. If there is a “better” way of accomplishing this I am open to suggestions.
    Thanks

    you can try using cachedRowSet() for the Oracle side query.
    The rows in this could be populated using the sybase side query's resultset and then all of this could updated into Oracle in one shot.

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