ABAP Select data from SAP table /SCWM/S_MFS_APC_TCP_LOG_MON into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_MFS_APC_TCP_LOG_MON table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /SCWM/S_MFS_APC_TCP_LOG_MON. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /SCWM/S_MFS_APC_TCP_LOG_MON table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/SCWM/S_MFS_APC_TCP_LOG_MON TYPE STANDARD TABLE OF /SCWM/S_MFS_APC_TCP_LOG_MON,
      WA_/SCWM/S_MFS_APC_TCP_LOG_MON TYPE /SCWM/S_MFS_APC_TCP_LOG_MON,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </SCWM/S_MFS_APC_TCP_LOG_MON> TYPE /SCWM/S_MFS_APC_TCP_LOG_MON.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SCWM/S_MFS_APC_TCP_LOG_MON.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_MFS_APC_TCP_LOG_MON
  INTO TABLE IT_/SCWM/S_MFS_APC_TCP_LOG_MON.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_MFS_APC_TCP_LOG_MON
*  INTO TABLE @DATA(IT_/SCWM/S_MFS_APC_TCP_LOG_MON2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/SCWM/S_MFS_APC_TCP_LOG_MON INDEX 1 INTO DATA(WA_/SCWM/S_MFS_APC_TCP_LOG_MON2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_MFS_APC_TCP_LOG_MON ASSIGNING </SCWM/S_MFS_APC_TCP_LOG_MON>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_MFS_APC_TCP_LOG_MON>-MANDT = 1.
</SCWM/S_MFS_APC_TCP_LOG_MON>-LGNUM = 1.
</SCWM/S_MFS_APC_TCP_LOG_MON>-PEER_IP_ADDRESS = 1.
</SCWM/S_MFS_APC_TCP_LOG_MON>-PEER_PORT_NUMBER = 1.
</SCWM/S_MFS_APC_TCP_LOG_MON>-TS_DATE = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_MFS_APC_TCP_LOG_MON INTO WA_/SCWM/S_MFS_APC_TCP_LOG_MON.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_MFS_APC_TCP_LOG_MON-TS_TIME, sy-vline,
  WA_/SCWM/S_MFS_APC_TCP_LOG_MON-TS_TIME_MS, sy-vline,
  WA_/SCWM/S_MFS_APC_TCP_LOG_MON-TIMESTAMP, sy-vline,
  WA_/SCWM/S_MFS_APC_TCP_LOG_MON-EVENT_TYPE, sy-vline,
  WA_/SCWM/S_MFS_APC_TCP_LOG_MON-DIRECTION, sy-vline,
  WA_/SCWM/S_MFS_APC_TCP_LOG_MON-USER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_MFS_APC_TCP_LOG_MON you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/SCWM/S_MFS_APC_TCP_LOG_MON TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/SCWM/S_MFS_APC_TCP_LOG_MON INTO WA_/SCWM/S_MFS_APC_TCP_LOG_MON.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit IPADD, internal->external for field PEER_IP_ADDRESS
CALL FUNCTION 'CONVERSION_EXIT_IPADD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_MFS_APC_TCP_LOG_MON-PEER_IP_ADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_MFS_APC_TCP_LOG_MON-PEER_IP_ADDRESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IPADD, internal->external for field LOCAL_IP_ADDRESS
CALL FUNCTION 'CONVERSION_EXIT_IPADD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_MFS_APC_TCP_LOG_MON-LOCAL_IP_ADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_MFS_APC_TCP_LOG_MON-LOCAL_IP_ADDRESS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SCWM/S_MFS_APC_TCP_LOG_MON_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
PEER_IP_ADDRESS TYPE STRING,
PEER_PORT_NUMBER TYPE STRING,
TS_DATE TYPE STRING,
TS_TIME TYPE STRING,
TS_TIME_MS TYPE STRING,
TIMESTAMP TYPE STRING,
EVENT_TYPE TYPE STRING,
DIRECTION TYPE STRING,
USER TYPE STRING,
CLIENT TYPE STRING,
PLC TYPE STRING,
CHANNEL TYPE STRING,
DESTINATION_HOST TYPE STRING,
DESTINATION_PORT_NUMBER TYPE STRING,
APPLICATION_ID TYPE STRING,
LOCAL_IP_ADDRESS TYPE STRING,
LOCAL_PORT_NUMBER TYPE STRING,
WS_HANDLE TYPE STRING,
ROOT_CONTEXT_ID TYPE STRING,
CONNECTION_ID TYPE STRING,
CONNECTION_COUNTER TYPE STRING,
PAYLOAD_LENGTH TYPE STRING,
PAYLOAD TYPE STRING,
APPL_SERVER TYPE STRING,
DIRECTORY_NAME TYPE STRING,
FILE_NAME TYPE STRING,
LINE_NUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-MANDT sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-LGNUM sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-PEER_IP_ADDRESS sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-PEER_PORT_NUMBER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-TS_DATE sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-TS_TIME sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-TS_TIME_MS sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-TIMESTAMP sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-EVENT_TYPE sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-DIRECTION sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-USER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-CLIENT sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-PLC sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-CHANNEL sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-DESTINATION_HOST sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-DESTINATION_PORT_NUMBER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-APPLICATION_ID sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-LOCAL_IP_ADDRESS sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-LOCAL_PORT_NUMBER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-WS_HANDLE sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-ROOT_CONTEXT_ID sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-CONNECTION_ID sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-CONNECTION_COUNTER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-PAYLOAD_LENGTH sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-PAYLOAD sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-APPL_SERVER sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-DIRECTORY_NAME sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-FILE_NAME sy-vline 
WA_/SCWM/S_MFS_APC_TCP_LOG_MON_STR-LINE_NUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.