Updating database table with DUPLICATE keys

Question

i have an internal table having data as follows.
emp_id     name     date           proj_id  activity_id    Hours  Remarks
101     Pavan    09.10.2007      123     1         2.00       Coding
101     Pavan     09.10.2007   124     2         1.00        Documentation
102     Raj     09.10.2007   123        3         6.00     Testing
Now i need to update a Ztable with above mentioned data.
The structure of the Ztable is as follows.
Mandt     emp_id  name    date    proj_id   activity_id   Hours   Remarks
NOte: i have ticked both check boxes for the field MANDT in table.
Rest didnt select the check boxes.
I believe now the field MANDT alone is a primary key for the z-table.
NOw i have tried with UPDATE/INSERT statments to update the database table.
But instead of inserting all the rows, the system is over writing on the same emp_id row.
Even tried with the statments like INSERT INTO <Ztable> values <Internal table> ACCEPTING DUPLICATE KEYS.
But its not getting inserted as a separate row in the table.
Requirement is to insert the multiple rows in the database table without any over writing activity.
Can anyone give me the code to do this?
Regards
Pavan

Answer 1

Hi Pavan,
    Please let me know what are the key fields in your Ztable. Try with below code it may help you. change the "Ztablename" as your database table name and I_INTERNAL TABLE  as your internal table name. still you are facing the problem please let me know.
lock the custom table before updating the table.
  CALL FUNCTION 'ENQUEUE_E_TABLE'
   EXPORTING
  MODE_RSTABLE         = 'E'
     TABNAME              = 'ZTABLENAME'
  VARKEY               =
  X_TABNAME            = ' '
  X_VARKEY             = ' '
  _SCOPE               = '2'
  _WAIT                = ' '
  _COLLECT             = ' '
   EXCEPTIONS
     FOREIGN_LOCK         = 1
     SYSTEM_FAILURE       = 2
     OTHERS               = 3
  IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ELSE.
    INSERT  ZTABLENAME FROM TABLE I_INTERNALTABLE ACCEPTING DUPLICATE KEYS.
    COMMIT WORK.
  ENDIF.
unlock after updating the custom table After updation is done.
  CALL FUNCTION 'DEQUEUE_E_TABLE'
   EXPORTING
    MODE_RSTABLE       = 'E'
     TABNAME            = 'ZTABLENAME'
    VARKEY             =
    X_TABNAME          = ' '
    X_VARKEY           = ' '
    _SCOPE             = '3'
    _SYNCHRON          = ' '
    _COLLECT           = ' '