ABAP Select data from SAP table RESBDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESBDS
*  INTO TABLE @DATA(IT_RESBDS2).
*--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_RESBDS INDEX 1 INTO DATA(WA_RESBDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESBDS>-MANDT = 1.
<RESBDS>-RSPOS = 1.
<RESBDS>-XLOEK = 1.
<RESBDS>-XWAOK = 1.
<RESBDS>-KZEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESBDS-XFEHL, sy-vline,
  WA_RESBDS-MATNR, sy-vline,
  WA_RESBDS-WERKS, sy-vline,
  WA_RESBDS-LGORT, sy-vline,
  WA_RESBDS-CHARG, sy-vline,
  WA_RESBDS-SOBKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESBDS 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_RESBDS 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_RESBDS INTO WA_RESBDS.


*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_RESBDS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESBDS-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RESBDS-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESBDS-POSNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RESBDS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESBDS-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RESBDS-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESBDS-AENNR.
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_RESBDS_STR, 
MANDT TYPE STRING,
RSPOS TYPE STRING,
XLOEK TYPE STRING,
XWAOK TYPE STRING,
KZEAR TYPE STRING,
XFEHL TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
BDTER TYPE STRING,
SHKZG TYPE STRING,
SERNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
POSTP TYPE STRING,
POSNR TYPE STRING,
ALPOS TYPE STRING,
SORTF TYPE STRING,
SCHGT TYPE STRING,
DUMPS TYPE STRING,
BEIKZ TYPE STRING,
ERSKZ TYPE STRING,
AUFST TYPE STRING,
AUFWG TYPE STRING,
BAUST TYPE STRING,
PLNFL TYPE STRING,
VORNR TYPE STRING,
FLGAT TYPE STRING,
RGEKZ TYPE STRING,
EKGRP TYPE STRING,
LIFZT TYPE STRING,
KFPOS TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
WEBAZ TYPE STRING,
MATKL TYPE STRING,
MENGE TYPE STRING,
DVMENG TYPE STRING,
DFMENG TYPE STRING,
DENMNG TYPE STRING,
EKORG TYPE STRING,
SPLKZ TYPE STRING,
KZECH TYPE STRING,
DBSKZ_D TYPE STRING,
AENNR TYPE STRING,
CH_PROC TYPE STRING,
OBJTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESBDS_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_RESBDS_STR-MANDT sy-vline 
WA_RESBDS_STR-RSPOS sy-vline 
WA_RESBDS_STR-XLOEK sy-vline 
WA_RESBDS_STR-XWAOK sy-vline 
WA_RESBDS_STR-KZEAR sy-vline 
WA_RESBDS_STR-XFEHL sy-vline 
WA_RESBDS_STR-MATNR sy-vline 
WA_RESBDS_STR-WERKS sy-vline 
WA_RESBDS_STR-LGORT sy-vline 
WA_RESBDS_STR-CHARG sy-vline 
WA_RESBDS_STR-SOBKZ sy-vline 
WA_RESBDS_STR-BDTER sy-vline 
WA_RESBDS_STR-SHKZG sy-vline 
WA_RESBDS_STR-SERNR sy-vline 
WA_RESBDS_STR-KDAUF sy-vline 
WA_RESBDS_STR-KDPOS sy-vline 
WA_RESBDS_STR-POSTP sy-vline 
WA_RESBDS_STR-POSNR sy-vline 
WA_RESBDS_STR-ALPOS sy-vline 
WA_RESBDS_STR-SORTF sy-vline 
WA_RESBDS_STR-SCHGT sy-vline 
WA_RESBDS_STR-DUMPS sy-vline 
WA_RESBDS_STR-BEIKZ sy-vline 
WA_RESBDS_STR-ERSKZ sy-vline 
WA_RESBDS_STR-AUFST sy-vline 
WA_RESBDS_STR-AUFWG sy-vline 
WA_RESBDS_STR-BAUST sy-vline 
WA_RESBDS_STR-PLNFL sy-vline 
WA_RESBDS_STR-VORNR sy-vline 
WA_RESBDS_STR-FLGAT sy-vline 
WA_RESBDS_STR-RGEKZ sy-vline 
WA_RESBDS_STR-EKGRP sy-vline 
WA_RESBDS_STR-LIFZT sy-vline 
WA_RESBDS_STR-KFPOS sy-vline 
WA_RESBDS_STR-LGNUM sy-vline 
WA_RESBDS_STR-LGTYP sy-vline 
WA_RESBDS_STR-LGPLA sy-vline 
WA_RESBDS_STR-WEBAZ sy-vline 
WA_RESBDS_STR-MATKL sy-vline 
WA_RESBDS_STR-MENGE sy-vline 
WA_RESBDS_STR-DVMENG sy-vline 
WA_RESBDS_STR-DFMENG sy-vline 
WA_RESBDS_STR-DENMNG sy-vline 
WA_RESBDS_STR-EKORG sy-vline 
WA_RESBDS_STR-SPLKZ sy-vline 
WA_RESBDS_STR-KZECH sy-vline 
WA_RESBDS_STR-DBSKZ_D sy-vline 
WA_RESBDS_STR-AENNR sy-vline 
WA_RESBDS_STR-CH_PROC sy-vline 
WA_RESBDS_STR-OBJTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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