ABAP Select data from SAP table FKKRDI_FILE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKRDI_FILE
*  INTO TABLE @DATA(IT_FKKRDI_FILE2).
*--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_FKKRDI_FILE INDEX 1 INTO DATA(WA_FKKRDI_FILE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKRDI_FILE>-MANDT = 1.
<FKKRDI_FILE>-LAUFD = 1.
<FKKRDI_FILE>-LAUFI = 1.
<FKKRDI_FILE>-FINRE = 1.
<FKKRDI_FILE>-OPBEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKRDI_FILE-OPUPW, sy-vline,
  WA_FKKRDI_FILE-OPUPK, sy-vline,
  WA_FKKRDI_FILE-OPUPZ, sy-vline,
  WA_FKKRDI_FILE-CORRECT, sy-vline,
  WA_FKKRDI_FILE-OPBELD, sy-vline,
  WA_FKKRDI_FILE-GPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKRDI_FILE 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_FKKRDI_FILE 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_FKKRDI_FILE INTO WA_FKKRDI_FILE.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKRDI_FILE-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKRDI_FILE-XBLNR.
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_FKKRDI_FILE_STR, 
MANDT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
FINRE TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
CORRECT TYPE STRING,
OPBELD TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
XBLNR TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
BETRW_DIS TYPE STRING,
BETRW2DIS TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
SUBAP TYPE STRING,
XDETDOC TYPE STRING,
XNEGP TYPE STRING,
DISTYP TYPE STRING,
DISKEY TYPE STRING,
BUKRS TYPE STRING,
PERSL TYPE STRING,
XAGGR TYPE STRING,
XAGGR_BASE TYPE STRING,
DISPER TYPE STRING,
DISGRP TYPE STRING,
PARTIAL_AMOUNT TYPE STRING,
TOTAL_AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKRDI_FILE_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_FKKRDI_FILE_STR-MANDT sy-vline 
WA_FKKRDI_FILE_STR-LAUFD sy-vline 
WA_FKKRDI_FILE_STR-LAUFI sy-vline 
WA_FKKRDI_FILE_STR-FINRE sy-vline 
WA_FKKRDI_FILE_STR-OPBEL sy-vline 
WA_FKKRDI_FILE_STR-OPUPW sy-vline 
WA_FKKRDI_FILE_STR-OPUPK sy-vline 
WA_FKKRDI_FILE_STR-OPUPZ sy-vline 
WA_FKKRDI_FILE_STR-CORRECT sy-vline 
WA_FKKRDI_FILE_STR-OPBELD sy-vline 
WA_FKKRDI_FILE_STR-GPART sy-vline 
WA_FKKRDI_FILE_STR-VKONT sy-vline 
WA_FKKRDI_FILE_STR-VTREF sy-vline 
WA_FKKRDI_FILE_STR-XBLNR sy-vline 
WA_FKKRDI_FILE_STR-WAERS sy-vline 
WA_FKKRDI_FILE_STR-BETRW sy-vline 
WA_FKKRDI_FILE_STR-BETRW_DIS sy-vline 
WA_FKKRDI_FILE_STR-BETRW2DIS sy-vline 
WA_FKKRDI_FILE_STR-HVORG sy-vline 
WA_FKKRDI_FILE_STR-TVORG sy-vline 
WA_FKKRDI_FILE_STR-SUBAP sy-vline 
WA_FKKRDI_FILE_STR-XDETDOC sy-vline 
WA_FKKRDI_FILE_STR-XNEGP sy-vline 
WA_FKKRDI_FILE_STR-DISTYP sy-vline 
WA_FKKRDI_FILE_STR-DISKEY sy-vline 
WA_FKKRDI_FILE_STR-BUKRS sy-vline 
WA_FKKRDI_FILE_STR-PERSL sy-vline 
WA_FKKRDI_FILE_STR-XAGGR sy-vline 
WA_FKKRDI_FILE_STR-XAGGR_BASE sy-vline 
WA_FKKRDI_FILE_STR-DISPER sy-vline 
WA_FKKRDI_FILE_STR-DISGRP sy-vline 
WA_FKKRDI_FILE_STR-PARTIAL_AMOUNT sy-vline 
WA_FKKRDI_FILE_STR-TOTAL_AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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