ABAP Select data from SAP table RESBD_CHANGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESBD_CHANGE
*  INTO TABLE @DATA(IT_RESBD_CHANGE2).
*--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_RESBD_CHANGE INDEX 1 INTO DATA(WA_RESBD_CHANGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESBD_CHANGE>-COMPONENT = 1.
<RESBD_CHANGE>-VORNR = 1.
<RESBD_CHANGE>-POSNR = 1.
<RESBD_CHANGE>-BDMNG = 1.
<RESBD_CHANGE>-CHANGE_NOMNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESBD_CHANGE-MEINS, sy-vline,
  WA_RESBD_CHANGE-POTX1, sy-vline,
  WA_RESBD_CHANGE-AUDISP, sy-vline,
  WA_RESBD_CHANGE-BDTER, sy-vline,
  WA_RESBD_CHANGE-KZMPF, sy-vline,
  WA_RESBD_CHANGE-NLFZV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESBD_CHANGE 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_RESBD_CHANGE 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_RESBD_CHANGE INTO WA_RESBD_CHANGE.


*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_RESBD_CHANGE_STR, 
COMPONENT TYPE STRING,
VORNR TYPE STRING,
POSNR TYPE STRING,
BDMNG TYPE STRING,
CHANGE_NOMNG TYPE STRING,
MEINS TYPE STRING,
POTX1 TYPE STRING,
AUDISP TYPE STRING,
BDTER TYPE STRING,
KZMPF TYPE STRING,
NLFZV TYPE STRING,
NLFMV TYPE STRING,
VERTI TYPE STRING,
SANKA TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
SERNR TYPE STRING,
LIFZT TYPE STRING,
EKGRP TYPE STRING,
EKORG TYPE STRING,
INFNR TYPE STRING,
GPREIS TYPE STRING,
PEINH TYPE STRING,
WAERS TYPE STRING,
KZFIX TYPE STRING,
KONNR TYPE STRING,
KTPNR TYPE STRING,
SAKNR TYPE STRING,
LIFNR TYPE STRING,
WEBAZ TYPE STRING,
MATKL TYPE STRING,
AFNAM TYPE STRING,
WEMPF TYPE STRING,
BEDNR TYPE STRING,
ABLAD TYPE STRING,
SORTP TYPE STRING,
RGEKZ TYPE STRING,
KZEAR TYPE STRING,
SCHGT TYPE STRING,
ROMS1 TYPE STRING,
ROMS2 TYPE STRING,
ROMS3 TYPE STRING,
ROMEI TYPE STRING,
ROMEN TYPE STRING,
ROKME TYPE STRING,
RFORM TYPE STRING,
ROANZ TYPE STRING,
NOMNG TYPE STRING,
ADRNR TYPE STRING,
ADRN2 TYPE STRING,
EMLIF TYPE STRING,
KUNNR TYPE STRING,
PSPEL TYPE STRING,
KDPOS TYPE STRING,
FUNCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESBD_CHANGE_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_RESBD_CHANGE_STR-COMPONENT sy-vline 
WA_RESBD_CHANGE_STR-VORNR sy-vline 
WA_RESBD_CHANGE_STR-POSNR sy-vline 
WA_RESBD_CHANGE_STR-BDMNG sy-vline 
WA_RESBD_CHANGE_STR-CHANGE_NOMNG sy-vline 
WA_RESBD_CHANGE_STR-MEINS sy-vline 
WA_RESBD_CHANGE_STR-POTX1 sy-vline 
WA_RESBD_CHANGE_STR-AUDISP sy-vline 
WA_RESBD_CHANGE_STR-BDTER sy-vline 
WA_RESBD_CHANGE_STR-KZMPF sy-vline 
WA_RESBD_CHANGE_STR-NLFZV sy-vline 
WA_RESBD_CHANGE_STR-NLFMV sy-vline 
WA_RESBD_CHANGE_STR-VERTI sy-vline 
WA_RESBD_CHANGE_STR-SANKA sy-vline 
WA_RESBD_CHANGE_STR-LGORT sy-vline 
WA_RESBD_CHANGE_STR-CHARG sy-vline 
WA_RESBD_CHANGE_STR-SERNR sy-vline 
WA_RESBD_CHANGE_STR-LIFZT sy-vline 
WA_RESBD_CHANGE_STR-EKGRP sy-vline 
WA_RESBD_CHANGE_STR-EKORG sy-vline 
WA_RESBD_CHANGE_STR-INFNR sy-vline 
WA_RESBD_CHANGE_STR-GPREIS sy-vline 
WA_RESBD_CHANGE_STR-PEINH sy-vline 
WA_RESBD_CHANGE_STR-WAERS sy-vline 
WA_RESBD_CHANGE_STR-KZFIX sy-vline 
WA_RESBD_CHANGE_STR-KONNR sy-vline 
WA_RESBD_CHANGE_STR-KTPNR sy-vline 
WA_RESBD_CHANGE_STR-SAKNR sy-vline 
WA_RESBD_CHANGE_STR-LIFNR sy-vline 
WA_RESBD_CHANGE_STR-WEBAZ sy-vline 
WA_RESBD_CHANGE_STR-MATKL sy-vline 
WA_RESBD_CHANGE_STR-AFNAM sy-vline 
WA_RESBD_CHANGE_STR-WEMPF sy-vline 
WA_RESBD_CHANGE_STR-BEDNR sy-vline 
WA_RESBD_CHANGE_STR-ABLAD sy-vline 
WA_RESBD_CHANGE_STR-SORTP sy-vline 
WA_RESBD_CHANGE_STR-RGEKZ sy-vline 
WA_RESBD_CHANGE_STR-KZEAR sy-vline 
WA_RESBD_CHANGE_STR-SCHGT sy-vline 
WA_RESBD_CHANGE_STR-ROMS1 sy-vline 
WA_RESBD_CHANGE_STR-ROMS2 sy-vline 
WA_RESBD_CHANGE_STR-ROMS3 sy-vline 
WA_RESBD_CHANGE_STR-ROMEI sy-vline 
WA_RESBD_CHANGE_STR-ROMEN sy-vline 
WA_RESBD_CHANGE_STR-ROKME sy-vline 
WA_RESBD_CHANGE_STR-RFORM sy-vline 
WA_RESBD_CHANGE_STR-ROANZ sy-vline 
WA_RESBD_CHANGE_STR-NOMNG sy-vline 
WA_RESBD_CHANGE_STR-ADRNR sy-vline 
WA_RESBD_CHANGE_STR-ADRN2 sy-vline 
WA_RESBD_CHANGE_STR-EMLIF sy-vline 
WA_RESBD_CHANGE_STR-KUNNR sy-vline 
WA_RESBD_CHANGE_STR-PSPEL sy-vline 
WA_RESBD_CHANGE_STR-KDPOS sy-vline 
WA_RESBD_CHANGE_STR-FUNCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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