ABAP Select data from SAP table REWBHILAFK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REWBHILAFK
*  INTO TABLE @DATA(IT_REWBHILAFK2).
*--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_REWBHILAFK INDEX 1 INTO DATA(WA_REWBHILAFK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REWBHILAFK>-SWBNR = 1.
<REWBHILAFK>-SWBIND = 1.
<REWBHILAFK>-FIGRP = 1.
<REWBHILAFK>-XFIGRP = 1.
<REWBHILAFK>-FIART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REWBHILAFK-XFIART, sy-vline,
  WA_REWBHILAFK-LFD_NR, sy-vline,
  WA_REWBHILAFK-DGEBER, sy-vline,
  WA_REWBHILAFK-FIKZ, sy-vline,
  WA_REWBHILAFK-ZUDAT, sy-vline,
  WA_REWBHILAFK-RGUEBIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REWBHILAFK 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_REWBHILAFK 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_REWBHILAFK INTO WA_REWBHILAFK.


*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 FIART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REWBHILAFK-FIART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REWBHILAFK-FIART.
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_REWBHILAFK_STR, 
SWBNR TYPE STRING,
SWBIND TYPE STRING,
FIGRP TYPE STRING,
XFIGRP TYPE STRING,
FIART TYPE STRING,
XFIART TYPE STRING,
LFD_NR TYPE STRING,
DGEBER TYPE STRING,
FIKZ TYPE STRING,
ZUDAT TYPE STRING,
RGUEBIS TYPE STRING,
BETRAG TYPE STRING,
BWAEHRUNG TYPE STRING,
TILGUNG TYPE STRING,
ZINS TYPE STRING,
JBETRAG TYPE STRING,
RMBETRAG TYPE STRING,
MBETRAG_PRO_EINH TYPE STRING,
MAW TYPE STRING,
RMBETRAGM TYPE STRING,
AUFWSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REWBHILAFK_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_REWBHILAFK_STR-SWBNR sy-vline 
WA_REWBHILAFK_STR-SWBIND sy-vline 
WA_REWBHILAFK_STR-FIGRP sy-vline 
WA_REWBHILAFK_STR-XFIGRP sy-vline 
WA_REWBHILAFK_STR-FIART sy-vline 
WA_REWBHILAFK_STR-XFIART sy-vline 
WA_REWBHILAFK_STR-LFD_NR sy-vline 
WA_REWBHILAFK_STR-DGEBER sy-vline 
WA_REWBHILAFK_STR-FIKZ sy-vline 
WA_REWBHILAFK_STR-ZUDAT sy-vline 
WA_REWBHILAFK_STR-RGUEBIS sy-vline 
WA_REWBHILAFK_STR-BETRAG sy-vline 
WA_REWBHILAFK_STR-BWAEHRUNG sy-vline 
WA_REWBHILAFK_STR-TILGUNG sy-vline 
WA_REWBHILAFK_STR-ZINS sy-vline 
WA_REWBHILAFK_STR-JBETRAG sy-vline 
WA_REWBHILAFK_STR-RMBETRAG sy-vline 
WA_REWBHILAFK_STR-MBETRAG_PRO_EINH sy-vline 
WA_REWBHILAFK_STR-MAW sy-vline 
WA_REWBHILAFK_STR-RMBETRAGM sy-vline 
WA_REWBHILAFK_STR-AUFWSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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