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

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/TMFSCCH 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/TMFSCCH. 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/TMFSCCH 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/TMFSCCH TYPE STANDARD TABLE OF /SCWM/TMFSCCH,
      WA_/SCWM/TMFSCCH TYPE /SCWM/TMFSCCH,
      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/TMFSCCH> TYPE /SCWM/TMFSCCH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/TMFSCCH
*  INTO TABLE @DATA(IT_/SCWM/TMFSCCH2).
*--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/TMFSCCH INDEX 1 INTO DATA(WA_/SCWM/TMFSCCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/TMFSCCH>-MANDT = 1.
</SCWM/TMFSCCH>-LGNUM = 1.
</SCWM/TMFSCCH>-PLC = 1.
</SCWM/TMFSCCH>-CHANNEL = 1.
</SCWM/TMFSCCH>-IPADDRESS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/TMFSCCH-PORT, sy-vline,
  WA_/SCWM/TMFSCCH-RETRY, sy-vline,
  WA_/SCWM/TMFSCCH-RETRY_WAIT, sy-vline,
  WA_/SCWM/TMFSCCH-SEQNO_SND_MAX, sy-vline,
  WA_/SCWM/TMFSCCH-SEQNO_RCV_MAX, sy-vline,
  WA_/SCWM/TMFSCCH-TELEFILLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/TMFSCCH 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/TMFSCCH 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/TMFSCCH INTO WA_/SCWM/TMFSCCH.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_/SCWM/TMFSCCH_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
PLC TYPE STRING,
CHANNEL TYPE STRING,
IPADDRESS TYPE STRING,
PORT TYPE STRING,
RETRY TYPE STRING,
RETRY_WAIT TYPE STRING,
SEQNO_SND_MAX TYPE STRING,
SEQNO_RCV_MAX TYPE STRING,
TELEFILLER TYPE STRING,
HNDSHK_ACK TYPE STRING,
HNDSHK_REQ TYPE STRING,
HNDSHK_MODE TYPE STRING,
SWITCH_SNDRCV TYPE STRING,
MAXWP TYPE STRING,
LIFE_INTERVAL TYPE STRING,
LIFE_TTYPE TYPE STRING,
LIFE_SEQNO TYPE STRING,
STARTCHAR TYPE STRING,
ENDCHAR TYPE STRING,
TELE_LEN TYPE STRING,
SEM_CHK TYPE STRING,
EXCCODE TYPE STRING,
MFS_ERROR TYPE STRING,
NOSYNC TYPE STRING,
NO_ALIVE_CHECK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/TMFSCCH_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/TMFSCCH_STR-MANDT sy-vline 
WA_/SCWM/TMFSCCH_STR-LGNUM sy-vline 
WA_/SCWM/TMFSCCH_STR-PLC sy-vline 
WA_/SCWM/TMFSCCH_STR-CHANNEL sy-vline 
WA_/SCWM/TMFSCCH_STR-IPADDRESS sy-vline 
WA_/SCWM/TMFSCCH_STR-PORT sy-vline 
WA_/SCWM/TMFSCCH_STR-RETRY sy-vline 
WA_/SCWM/TMFSCCH_STR-RETRY_WAIT sy-vline 
WA_/SCWM/TMFSCCH_STR-SEQNO_SND_MAX sy-vline 
WA_/SCWM/TMFSCCH_STR-SEQNO_RCV_MAX sy-vline 
WA_/SCWM/TMFSCCH_STR-TELEFILLER sy-vline 
WA_/SCWM/TMFSCCH_STR-HNDSHK_ACK sy-vline 
WA_/SCWM/TMFSCCH_STR-HNDSHK_REQ sy-vline 
WA_/SCWM/TMFSCCH_STR-HNDSHK_MODE sy-vline 
WA_/SCWM/TMFSCCH_STR-SWITCH_SNDRCV sy-vline 
WA_/SCWM/TMFSCCH_STR-MAXWP sy-vline 
WA_/SCWM/TMFSCCH_STR-LIFE_INTERVAL sy-vline 
WA_/SCWM/TMFSCCH_STR-LIFE_TTYPE sy-vline 
WA_/SCWM/TMFSCCH_STR-LIFE_SEQNO sy-vline 
WA_/SCWM/TMFSCCH_STR-STARTCHAR sy-vline 
WA_/SCWM/TMFSCCH_STR-ENDCHAR sy-vline 
WA_/SCWM/TMFSCCH_STR-TELE_LEN sy-vline 
WA_/SCWM/TMFSCCH_STR-SEM_CHK sy-vline 
WA_/SCWM/TMFSCCH_STR-EXCCODE sy-vline 
WA_/SCWM/TMFSCCH_STR-MFS_ERROR sy-vline 
WA_/SCWM/TMFSCCH_STR-NOSYNC sy-vline 
WA_/SCWM/TMFSCCH_STR-NO_ALIVE_CHECK sy-vline      INTO ld_text SEPARATED BY SPACE.

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