ABAP Select data from SAP table WVFB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WVFB
*  INTO TABLE @DATA(IT_WVFB2).
*--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_WVFB INDEX 1 INTO DATA(WA_WVFB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WVFB>-MANDT = 1.
<WVFB>-WGSREQN = 1.
<WVFB>-WGSREQP = 1.
<WVFB>-WBTYP = 1.
<WVFB>-ACTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WVFB-BUKRS, sy-vline,
  WA_WVFB-BSTYP, sy-vline,
  WA_WVFB-BSART, sy-vline,
  WA_WVFB-LIFNR, sy-vline,
  WA_WVFB-ZTERM, sy-vline,
  WA_WVFB-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WVFB 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_WVFB 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_WVFB INTO WA_WVFB.


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

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

*Conversion exit EXCRT, internal->external for field WKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-WKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-WKURS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-LMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-LMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-EAN11.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field I_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WVFB-I_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WVFB-I_BELNR.
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_WVFB_STR, 
MANDT TYPE STRING,
WGSREQN TYPE STRING,
WGSREQP TYPE STRING,
WBTYP TYPE STRING,
ACTION TYPE STRING,
BUKRS TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
LIFNR TYPE STRING,
ZTERM TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
DISPO TYPE STRING,
AFNAM TYPE STRING,
WAERS TYPE STRING,
WKURS TYPE STRING,
KUNNR TYPE STRING,
RESWK TYPE STRING,
KONNR TYPE STRING,
MATNR TYPE STRING,
EMATN TYPE STRING,
WERKS TYPE STRING,
BEDNR TYPE STRING,
MATKL TYPE STRING,
IDNLF TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
PSTYP TYPE STRING,
LMEIN TYPE STRING,
EAN11 TYPE STRING,
AKTNR TYPE STRING,
EINDT TYPE STRING,
UZEIT TYPE STRING,
BEDAT TYPE STRING,
VSTAT TYPE STRING,
POSNRI TYPE STRING,
KNTTP TYPE STRING,
KOSTL TYPE STRING,
LTSNR TYPE STRING,
LGORT TYPE STRING,
WVFBSORT TYPE STRING,
WVFB_NO_WF TYPE STRING,
WVFBSTEP TYPE STRING,
WVFBCALL TYPE STRING,
WVFBPARTEXIST TYPE STRING,
WVFBCONDEXIST TYPE STRING,
USRC1 TYPE STRING,
USRC2 TYPE STRING,
USRN1 TYPE STRING,
USRN2 TYPE STRING,
VSTEL TYPE STRING,
LPRIO TYPE STRING,
ROUTE TYPE STRING,
SPDNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
AUART TYPE STRING,
RETPO TYPE STRING,
I_BELNR TYPE STRING,
I_POSNR TYPE STRING,
E_BELNR TYPE STRING,
E_POSNR TYPE STRING,
E_OBJTYPE TYPE STRING,
FREE TYPE STRING,
SEGNUM TYPE STRING,
KTPNR TYPE STRING,
UPTYP TYPE STRING,
HL_ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WVFB_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_WVFB_STR-MANDT sy-vline 
WA_WVFB_STR-WGSREQN sy-vline 
WA_WVFB_STR-WGSREQP sy-vline 
WA_WVFB_STR-WBTYP sy-vline 
WA_WVFB_STR-ACTION sy-vline 
WA_WVFB_STR-BUKRS sy-vline 
WA_WVFB_STR-BSTYP sy-vline 
WA_WVFB_STR-BSART sy-vline 
WA_WVFB_STR-LIFNR sy-vline 
WA_WVFB_STR-ZTERM sy-vline 
WA_WVFB_STR-EKORG sy-vline 
WA_WVFB_STR-EKGRP sy-vline 
WA_WVFB_STR-DISPO sy-vline 
WA_WVFB_STR-AFNAM sy-vline 
WA_WVFB_STR-WAERS sy-vline 
WA_WVFB_STR-WKURS sy-vline 
WA_WVFB_STR-KUNNR sy-vline 
WA_WVFB_STR-RESWK sy-vline 
WA_WVFB_STR-KONNR sy-vline 
WA_WVFB_STR-MATNR sy-vline 
WA_WVFB_STR-EMATN sy-vline 
WA_WVFB_STR-WERKS sy-vline 
WA_WVFB_STR-BEDNR sy-vline 
WA_WVFB_STR-MATKL sy-vline 
WA_WVFB_STR-IDNLF sy-vline 
WA_WVFB_STR-MENGE sy-vline 
WA_WVFB_STR-MEINS sy-vline 
WA_WVFB_STR-PSTYP sy-vline 
WA_WVFB_STR-LMEIN sy-vline 
WA_WVFB_STR-EAN11 sy-vline 
WA_WVFB_STR-AKTNR sy-vline 
WA_WVFB_STR-EINDT sy-vline 
WA_WVFB_STR-UZEIT sy-vline 
WA_WVFB_STR-BEDAT sy-vline 
WA_WVFB_STR-VSTAT sy-vline 
WA_WVFB_STR-POSNRI sy-vline 
WA_WVFB_STR-KNTTP sy-vline 
WA_WVFB_STR-KOSTL sy-vline 
WA_WVFB_STR-LTSNR sy-vline 
WA_WVFB_STR-LGORT sy-vline 
WA_WVFB_STR-WVFBSORT sy-vline 
WA_WVFB_STR-WVFB_NO_WF sy-vline 
WA_WVFB_STR-WVFBSTEP sy-vline 
WA_WVFB_STR-WVFBCALL sy-vline 
WA_WVFB_STR-WVFBPARTEXIST sy-vline 
WA_WVFB_STR-WVFBCONDEXIST sy-vline 
WA_WVFB_STR-USRC1 sy-vline 
WA_WVFB_STR-USRC2 sy-vline 
WA_WVFB_STR-USRN1 sy-vline 
WA_WVFB_STR-USRN2 sy-vline 
WA_WVFB_STR-VSTEL sy-vline 
WA_WVFB_STR-LPRIO sy-vline 
WA_WVFB_STR-ROUTE sy-vline 
WA_WVFB_STR-SPDNR sy-vline 
WA_WVFB_STR-VKORG sy-vline 
WA_WVFB_STR-VTWEG sy-vline 
WA_WVFB_STR-SPART sy-vline 
WA_WVFB_STR-VKBUR sy-vline 
WA_WVFB_STR-VKGRP sy-vline 
WA_WVFB_STR-AUART sy-vline 
WA_WVFB_STR-RETPO sy-vline 
WA_WVFB_STR-I_BELNR sy-vline 
WA_WVFB_STR-I_POSNR sy-vline 
WA_WVFB_STR-E_BELNR sy-vline 
WA_WVFB_STR-E_POSNR sy-vline 
WA_WVFB_STR-E_OBJTYPE sy-vline 
WA_WVFB_STR-FREE sy-vline 
WA_WVFB_STR-SEGNUM sy-vline 
WA_WVFB_STR-KTPNR sy-vline 
WA_WVFB_STR-UPTYP sy-vline 
WA_WVFB_STR-HL_ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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