ABAP Select data from SAP table VWBEPP_REV_MIGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VWBEPP_REV_MIGR
*  INTO TABLE @DATA(IT_VWBEPP_REV_MIGR2).
*--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_VWBEPP_REV_MIGR INDEX 1 INTO DATA(WA_VWBEPP_REV_MIGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VWBEPP_REV_MIGR>-MANDT = 1.
<VWBEPP_REV_MIGR>-BUKRS = 1.
<VWBEPP_REV_MIGR>-RANL = 1.
<VWBEPP_REV_MIGR>-RLDEPO = 1.
<VWBEPP_REV_MIGR>-DTRANS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VWBEPP_REV_MIGR-TTRANS, sy-vline,
  WA_VWBEPP_REV_MIGR-NTRANS, sy-vline,
  WA_VWBEPP_REV_MIGR-RBELNR, sy-vline,
  WA_VWBEPP_REV_MIGR-RPOSNR, sy-vline,
  WA_VWBEPP_REV_MIGR-KMNR, sy-vline,
  WA_VWBEPP_REV_MIGR-ERNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VWBEPP_REV_MIGR 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_VWBEPP_REV_MIGR 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_VWBEPP_REV_MIGR INTO WA_VWBEPP_REV_MIGR.


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

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

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

*Conversion exit ALPHA, internal->external for field ERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWBEPP_REV_MIGR-ERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWBEPP_REV_MIGR-ERNR.
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_VWBEPP_REV_MIGR_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RANL TYPE STRING,
RLDEPO TYPE STRING,
DTRANS TYPE STRING,
TTRANS TYPE STRING,
NTRANS TYPE STRING,
RBELNR TYPE STRING,
RPOSNR TYPE STRING,
KMNR TYPE STRING,
ERNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VWBEPP_REV_MIGR_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_VWBEPP_REV_MIGR_STR-MANDT sy-vline 
WA_VWBEPP_REV_MIGR_STR-BUKRS sy-vline 
WA_VWBEPP_REV_MIGR_STR-RANL sy-vline 
WA_VWBEPP_REV_MIGR_STR-RLDEPO sy-vline 
WA_VWBEPP_REV_MIGR_STR-DTRANS sy-vline 
WA_VWBEPP_REV_MIGR_STR-TTRANS sy-vline 
WA_VWBEPP_REV_MIGR_STR-NTRANS sy-vline 
WA_VWBEPP_REV_MIGR_STR-RBELNR sy-vline 
WA_VWBEPP_REV_MIGR_STR-RPOSNR sy-vline 
WA_VWBEPP_REV_MIGR_STR-KMNR sy-vline 
WA_VWBEPP_REV_MIGR_STR-ERNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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