ABAP Select data from SAP table RDM_S_BBY_WA_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDM_S_BBY_WA_HEADER
*  INTO TABLE @DATA(IT_RDM_S_BBY_WA_HEADER2).
*--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_RDM_S_BBY_WA_HEADER INDEX 1 INTO DATA(WA_RDM_S_BBY_WA_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDM_S_BBY_WA_HEADER>-BBYNR = 1.
<RDM_S_BBY_WA_HEADER>-BPROF = 1.
<RDM_S_BBY_WA_HEADER>-DATAB = 1.
<RDM_S_BBY_WA_HEADER>-DATBI = 1.
<RDM_S_BBY_WA_HEADER>-AKTNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDM_S_BBY_WA_HEADER-BBYTEXT, sy-vline,
  WA_RDM_S_BBY_WA_HEADER-CRAPPL, sy-vline,
  WA_RDM_S_BBY_WA_HEADER-CRDOCN, sy-vline,
  WA_RDM_S_BBY_WA_HEADER-CRDATE, sy-vline,
  WA_RDM_S_BBY_WA_HEADER-CRNAME, sy-vline,
  WA_RDM_S_BBY_WA_HEADER-CHDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDM_S_BBY_WA_HEADER 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_RDM_S_BBY_WA_HEADER 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_RDM_S_BBY_WA_HEADER INTO WA_RDM_S_BBY_WA_HEADER.


*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 AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDM_S_BBY_WA_HEADER-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDM_S_BBY_WA_HEADER-AKTNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field OFFER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDM_S_BBY_WA_HEADER-OFFER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDM_S_BBY_WA_HEADER-OFFER_ID.
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_RDM_S_BBY_WA_HEADER_STR, 
BBYNR TYPE STRING,
BPROF TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
AKTNR TYPE STRING,
BBYTEXT TYPE STRING,
CRAPPL TYPE STRING,
CRDOCN TYPE STRING,
CRDATE TYPE STRING,
CRNAME TYPE STRING,
CHDATE TYPE STRING,
CHNAME TYPE STRING,
BUYCON TYPE STRING,
GETCON TYPE STRING,
ONLYONCE TYPE STRING,
REWSCOPE TYPE STRING,
STATUS TYPE STRING,
TYPE TYPE STRING,
BBYCURH TYPE STRING,
OFFER_ID TYPE STRING,
NEWMAIN TYPE STRING,
LIMITNR TYPE STRING,
BUY_PRQVAL_MIN TYPE STRING,
BUY_PRQCUR TYPE STRING,
GET_REWNR TYPE STRING,
ORGTYPE TYPE STRING,
KALKE TYPE STRING,
SYNCH_TO_PROMO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDM_S_BBY_WA_HEADER_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_RDM_S_BBY_WA_HEADER_STR-BBYNR sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BPROF sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-DATAB sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-DATBI sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-AKTNR sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BBYTEXT sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CRAPPL sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CRDOCN sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CRDATE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CRNAME sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CHDATE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-CHNAME sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BUYCON sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-GETCON sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-ONLYONCE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-REWSCOPE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-STATUS sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-TYPE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BBYCURH sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-OFFER_ID sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-NEWMAIN sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-LIMITNR sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BUY_PRQVAL_MIN sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-BUY_PRQCUR sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-GET_REWNR sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-ORGTYPE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-KALKE sy-vline 
WA_RDM_S_BBY_WA_HEADER_STR-SYNCH_TO_PROMO sy-vline      INTO ld_text SEPARATED BY SPACE.

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