Reading Data from a SQL table to a Logical file on R/3 appl. Server

Question

Hi All,
We would like to create Master Data using LSMW (direct Input) with source files from R/3 Application Server.
I have created files in the'/ tmp/' directory however I do not know how to read data from the SQL table and insert it into the logical file on the R/3 application server.
I am new to ABAP , please let me know the steps to be done to acheive this .
Regards
- Ajay

Answer 1

Hi,
You can find lot of information about Datasets in SCN just SEARCH once.
You can check the code snippet for understanding
DATA:
BEGIN OF fs,
  carrid TYPE s_carr_id,
  connid TYPE s_conn_id,
END OF fs.
DATA:
  itab    LIKE
          TABLE OF fs,
  w_file  TYPE char255 VALUE 'FILE',
  w_file2 TYPE char255 VALUE 'FILE2'.
SELECT carrid connid FROM spfli INTO TABLE itab.
OPEN DATASET w_file FOR OUTPUT IN TEXT MODE ENCODING DEFAULT. "Opening a file in Application
                                                        " Server to write data
LOOP AT itab INTO fs.
  TRANSFER fs TO w_file. "" Writing the data into the Application server file
ENDLOOP.
CLOSE DATASET w_file.
OPEN DATASET w_file FOR INPUT IN TEXT MODE ENCODING DEFAULT. "Opening a file in Application
                                                      " server to read data
FREE itab.
DO.
  READ DATASET w_file INTO fs.
  IF sy-subrc EQ 0.
    APPEND fs TO itab.
    OPEN DATASET w_file2 FOR APPENDING IN TEXT MODE ENCODING DEFAULT. "Appending more data to the file in the
                                                       " application server
    TRANSFER fs TO w_file2.
    CLOSE DATASET w_file2.
  ELSE.
    EXIT.
  ENDIF.
ENDDO.
Regards
Sarves