ABAP Select data from SAP table FCOMS_ISS_DRKK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOMS_ISS_DRKK
*  INTO TABLE @DATA(IT_FCOMS_ISS_DRKK2).
*--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_FCOMS_ISS_DRKK INDEX 1 INTO DATA(WA_FCOMS_ISS_DRKK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOMS_ISS_DRKK>-KOKRS = 1.
<FCOMS_ISS_DRKK>-WERKS = 1.
<FCOMS_ISS_DRKK>-PROGR = 1.
<FCOMS_ISS_DRKK>-MATNR = 1.
<FCOMS_ISS_DRKK>-AUART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOMS_ISS_DRKK-AUFNR, sy-vline,
  WA_FCOMS_ISS_DRKK-SOVER, sy-vline,
  WA_FCOMS_ISS_DRKK-ABVER, sy-vline,
  WA_FCOMS_ISS_DRKK-GJPER, sy-vline,
  WA_FCOMS_ISS_DRKK-PLGES, sy-vline,
  WA_FCOMS_ISS_DRKK-ISGES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOMS_ISS_DRKK 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_FCOMS_ISS_DRKK 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_FCOMS_ISS_DRKK INTO WA_FCOMS_ISS_DRKK.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-SOVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-SOVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-ABVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-ABVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field GJPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-GJPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-GJPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FCOMS_ISS_DRKK-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOMS_ISS_DRKK-MEINH.
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_FCOMS_ISS_DRKK_STR, 
KOKRS TYPE STRING,
WERKS TYPE STRING,
PROGR TYPE STRING,
MATNR TYPE STRING,
AUART TYPE STRING,
AUFNR TYPE STRING,
SOVER TYPE STRING,
ABVER TYPE STRING,
GJPER TYPE STRING,
PLGES TYPE STRING,
ISGES TYPE STRING,
ISVAR TYPE STRING,
ISFIX TYPE STRING,
ISBELGES TYPE STRING,
ISENTGES TYPE STRING,
SOENTGES TYPE STRING,
SOBELGES TYPE STRING,
SOGES TYPE STRING,
DFTRACBE TYPE STRING,
DFTRACEN TYPE STRING,
APGES TYPE STRING,
AMGES TYPE STRING,
ASGES TYPE STRING,
ALGES TYPE STRING,
AWGES TYPE STRING,
AAGES TYPE STRING,
ARGES TYPE STRING,
AVGES TYPE STRING,
ABGES TYPE STRING,
MPGES TYPE STRING,
MIGES TYPE STRING,
WIPGS TYPE STRING,
DFPLAC TYPE STRING,
DFTRAC TYPE STRING,
WAERS TYPE STRING,
MEINH TYPE STRING,
ELEMT TYPE STRING,
AIRGES TYPE STRING,
AITGES TYPE STRING,
AOTGES TYPE STRING,
DPTRAC TYPE STRING,
DPTRACBE TYPE STRING,
DPTRACEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOMS_ISS_DRKK_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_FCOMS_ISS_DRKK_STR-KOKRS sy-vline 
WA_FCOMS_ISS_DRKK_STR-WERKS sy-vline 
WA_FCOMS_ISS_DRKK_STR-PROGR sy-vline 
WA_FCOMS_ISS_DRKK_STR-MATNR sy-vline 
WA_FCOMS_ISS_DRKK_STR-AUART sy-vline 
WA_FCOMS_ISS_DRKK_STR-AUFNR sy-vline 
WA_FCOMS_ISS_DRKK_STR-SOVER sy-vline 
WA_FCOMS_ISS_DRKK_STR-ABVER sy-vline 
WA_FCOMS_ISS_DRKK_STR-GJPER sy-vline 
WA_FCOMS_ISS_DRKK_STR-PLGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ISGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ISVAR sy-vline 
WA_FCOMS_ISS_DRKK_STR-ISFIX sy-vline 
WA_FCOMS_ISS_DRKK_STR-ISBELGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ISENTGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-SOENTGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-SOBELGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-SOGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-DFTRACBE sy-vline 
WA_FCOMS_ISS_DRKK_STR-DFTRACEN sy-vline 
WA_FCOMS_ISS_DRKK_STR-APGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AMGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ASGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ALGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AWGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AAGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ARGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AVGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-ABGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-MPGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-MIGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-WIPGS sy-vline 
WA_FCOMS_ISS_DRKK_STR-DFPLAC sy-vline 
WA_FCOMS_ISS_DRKK_STR-DFTRAC sy-vline 
WA_FCOMS_ISS_DRKK_STR-WAERS sy-vline 
WA_FCOMS_ISS_DRKK_STR-MEINH sy-vline 
WA_FCOMS_ISS_DRKK_STR-ELEMT sy-vline 
WA_FCOMS_ISS_DRKK_STR-AIRGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AITGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-AOTGES sy-vline 
WA_FCOMS_ISS_DRKK_STR-DPTRAC sy-vline 
WA_FCOMS_ISS_DRKK_STR-DPTRACBE sy-vline 
WA_FCOMS_ISS_DRKK_STR-DPTRACEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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