ABAP Select data from SAP table COMT_XIF_CONFIG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMT_XIF_CONFIG 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 COMT_XIF_CONFIG. 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 COMT_XIF_CONFIG 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_COMT_XIF_CONFIG TYPE STANDARD TABLE OF COMT_XIF_CONFIG,
      WA_COMT_XIF_CONFIG TYPE COMT_XIF_CONFIG,
      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: <COMT_XIF_CONFIG> TYPE COMT_XIF_CONFIG.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM COMT_XIF_CONFIG
  INTO TABLE IT_COMT_XIF_CONFIG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_XIF_CONFIG
*  INTO TABLE @DATA(IT_COMT_XIF_CONFIG2).
*--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_COMT_XIF_CONFIG INDEX 1 INTO DATA(WA_COMT_XIF_CONFIG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_COMT_XIF_CONFIG ASSIGNING <COMT_XIF_CONFIG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_XIF_CONFIG>-SCE = 1.
<COMT_XIF_CONFIG>-NAME = 1.
<COMT_XIF_CONFIG>-VERSION = 1.
<COMT_XIF_CONFIG>-LOGSYS = 1.
<COMT_XIF_CONFIG>-PROFILE = 1.

ENDLOOP.

LOOP AT IT_COMT_XIF_CONFIG INTO WA_COMT_XIF_CONFIG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_XIF_CONFIG-LANGUAGE, sy-vline,
  WA_COMT_XIF_CONFIG-COMPLETE, sy-vline,
  WA_COMT_XIF_CONFIG-CONSISTENT, sy-vline,
  WA_COMT_XIF_CONFIG-INFO, sy-vline,
  WA_COMT_XIF_CONFIG-BUILD, sy-vline,
  WA_COMT_XIF_CONFIG-INSTANCES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_XIF_CONFIG 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_COMT_XIF_CONFIG 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_COMT_XIF_CONFIG INTO WA_COMT_XIF_CONFIG.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_XIF_CONFIG-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_XIF_CONFIG-LANGUAGE.
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_COMT_XIF_CONFIG_STR, 
SCE TYPE STRING,
NAME TYPE STRING,
VERSION TYPE STRING,
LOGSYS TYPE STRING,
PROFILE TYPE STRING,
LANGUAGE TYPE STRING,
COMPLETE TYPE STRING,
CONSISTENT TYPE STRING,
INFO TYPE STRING,
BUILD TYPE STRING,
INSTANCES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_XIF_CONFIG_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_COMT_XIF_CONFIG_STR-SCE sy-vline 
WA_COMT_XIF_CONFIG_STR-NAME sy-vline 
WA_COMT_XIF_CONFIG_STR-VERSION sy-vline 
WA_COMT_XIF_CONFIG_STR-LOGSYS sy-vline 
WA_COMT_XIF_CONFIG_STR-PROFILE sy-vline 
WA_COMT_XIF_CONFIG_STR-LANGUAGE sy-vline 
WA_COMT_XIF_CONFIG_STR-COMPLETE sy-vline 
WA_COMT_XIF_CONFIG_STR-CONSISTENT sy-vline 
WA_COMT_XIF_CONFIG_STR-INFO sy-vline 
WA_COMT_XIF_CONFIG_STR-BUILD sy-vline 
WA_COMT_XIF_CONFIG_STR-INSTANCES sy-vline      INTO ld_text SEPARATED BY SPACE.

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