ABAP Select data from SAP table R2BSEW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP R2BSEW 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 R2BSEW. 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 R2BSEW 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_R2BSEW TYPE STANDARD TABLE OF R2BSEW,
      WA_R2BSEW TYPE R2BSEW,
      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: <R2BSEW> TYPE R2BSEW.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_R2BSEW.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM R2BSEW
  INTO TABLE IT_R2BSEW.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM R2BSEW
*  INTO TABLE @DATA(IT_R2BSEW2).
*--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_R2BSEW INDEX 1 INTO DATA(WA_R2BSEW2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_R2BSEW ASSIGNING <R2BSEW>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<R2BSEW>-POSNR = 1.
<R2BSEW>-UPOSN = 1.
<R2BSEW>-BEWTP = 1.
<R2BSEW>-ABDAT = 1.
<R2BSEW>-BSEZL = 1.

ENDLOOP.

LOOP AT IT_R2BSEW INTO WA_R2BSEW.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_R2BSEW-BEWNR, sy-vline,
  WA_R2BSEW-BEWPS, sy-vline,
  WA_R2BSEW-BWART, sy-vline,
  WA_R2BSEW-BLART, sy-vline,
  WA_R2BSEW-BEWDT, sy-vline,
  WA_R2BSEW-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_R2BSEW 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_R2BSEW 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_R2BSEW INTO WA_R2BSEW.


*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_R2BSEW_STR, 
POSNR TYPE STRING,
UPOSN TYPE STRING,
BEWTP TYPE STRING,
ABDAT TYPE STRING,
BSEZL TYPE STRING,
BEWNR TYPE STRING,
BEWPS TYPE STRING,
BWART TYPE STRING,
BLART TYPE STRING,
BEWDT TYPE STRING,
MENGE TYPE STRING,
MEINH TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
SHKZG TYPE STRING,
AREWR TYPE STRING,
AWEWR TYPE STRING,
BWTAR TYPE STRING,
XBLNR TYPE STRING,
BELNR TYPE STRING,
BELPS TYPE STRING,
PSTYP TYPE STRING,
MATNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
WESBS TYPE STRING,
BPWES TYPE STRING,
LCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_R2BSEW_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_R2BSEW_STR-POSNR sy-vline 
WA_R2BSEW_STR-UPOSN sy-vline 
WA_R2BSEW_STR-BEWTP sy-vline 
WA_R2BSEW_STR-ABDAT sy-vline 
WA_R2BSEW_STR-BSEZL sy-vline 
WA_R2BSEW_STR-BEWNR sy-vline 
WA_R2BSEW_STR-BEWPS sy-vline 
WA_R2BSEW_STR-BWART sy-vline 
WA_R2BSEW_STR-BLART sy-vline 
WA_R2BSEW_STR-BEWDT sy-vline 
WA_R2BSEW_STR-MENGE sy-vline 
WA_R2BSEW_STR-MEINH sy-vline 
WA_R2BSEW_STR-BETRG sy-vline 
WA_R2BSEW_STR-WAERS sy-vline 
WA_R2BSEW_STR-KURSF sy-vline 
WA_R2BSEW_STR-SHKZG sy-vline 
WA_R2BSEW_STR-AREWR sy-vline 
WA_R2BSEW_STR-AWEWR sy-vline 
WA_R2BSEW_STR-BWTAR sy-vline 
WA_R2BSEW_STR-XBLNR sy-vline 
WA_R2BSEW_STR-BELNR sy-vline 
WA_R2BSEW_STR-BELPS sy-vline 
WA_R2BSEW_STR-PSTYP sy-vline 
WA_R2BSEW_STR-MATNR sy-vline 
WA_R2BSEW_STR-BUKRS sy-vline 
WA_R2BSEW_STR-WERKS sy-vline 
WA_R2BSEW_STR-WESBS sy-vline 
WA_R2BSEW_STR-BPWES sy-vline 
WA_R2BSEW_STR-LCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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