ABAP Select data from SAP table REBD_ARCH_REL_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REBD_ARCH_REL_S
*  INTO TABLE @DATA(IT_REBD_ARCH_REL_S2).
*--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_REBD_ARCH_REL_S INDEX 1 INTO DATA(WA_REBD_ARCH_REL_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REBD_ARCH_REL_S>-AOID = 1.
<REBD_ARCH_REL_S>-AOTYPE = 1.
<REBD_ARCH_REL_S>-AONR = 1.
<REBD_ARCH_REL_S>-AOVALIDFROM = 1.
<REBD_ARCH_REL_S>-AOVALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REBD_ARCH_REL_S-XAO, sy-vline,
  WA_REBD_ARCH_REL_S-XMAOTYPE, sy-vline,
  WA_REBD_ARCH_REL_S-ROOTXMAOTYPE, sy-vline,
  WA_REBD_ARCH_REL_S-ROOTAOID, sy-vline,
  WA_REBD_ARCH_REL_S-ROOTXAO, sy-vline,
  WA_REBD_ARCH_REL_S-ROOTAONR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REBD_ARCH_REL_S 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_REBD_ARCH_REL_S 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_REBD_ARCH_REL_S INTO WA_REBD_ARCH_REL_S.


*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 REDAT, internal->external for field AOVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REBD_ARCH_REL_S-AOVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBD_ARCH_REL_S-AOVALIDTO.
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_REBD_ARCH_REL_S_STR, 
AOID TYPE STRING,
AOTYPE TYPE STRING,
AONR TYPE STRING,
AOVALIDFROM TYPE STRING,
AOVALIDTO TYPE STRING,
XAO TYPE STRING,
XMAOTYPE TYPE STRING,
ROOTXMAOTYPE TYPE STRING,
ROOTAOID TYPE STRING,
ROOTXAO TYPE STRING,
ROOTAONR TYPE STRING,
ROOTINTRENO TYPE STRING,
ROOTOBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REBD_ARCH_REL_S_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_REBD_ARCH_REL_S_STR-AOID sy-vline 
WA_REBD_ARCH_REL_S_STR-AOTYPE sy-vline 
WA_REBD_ARCH_REL_S_STR-AONR sy-vline 
WA_REBD_ARCH_REL_S_STR-AOVALIDFROM sy-vline 
WA_REBD_ARCH_REL_S_STR-AOVALIDTO sy-vline 
WA_REBD_ARCH_REL_S_STR-XAO sy-vline 
WA_REBD_ARCH_REL_S_STR-XMAOTYPE sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTXMAOTYPE sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTAOID sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTXAO sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTAONR sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTINTRENO sy-vline 
WA_REBD_ARCH_REL_S_STR-ROOTOBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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