ABAP Select data from SAP table VBAK_INCOMPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBAK_INCOMPL
*  INTO TABLE @DATA(IT_VBAK_INCOMPL2).
*--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_VBAK_INCOMPL INDEX 1 INTO DATA(WA_VBAK_INCOMPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBAK_INCOMPL>-MANDT = 1.
<VBAK_INCOMPL>-VBELN = 1.
<VBAK_INCOMPL>-ERNAM = 1.
<VBAK_INCOMPL>-ERDAT = 1.
<VBAK_INCOMPL>-VKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBAK_INCOMPL-VTWEG, sy-vline,
  WA_VBAK_INCOMPL-SPART, sy-vline,
  WA_VBAK_INCOMPL-VKBUR, sy-vline,
  WA_VBAK_INCOMPL-VKGRP, sy-vline,
  WA_VBAK_INCOMPL-UVALL, sy-vline,
  WA_VBAK_INCOMPL-UVVLK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBAK_INCOMPL 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_VBAK_INCOMPL 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_VBAK_INCOMPL INTO WA_VBAK_INCOMPL.


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

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_VBAK_INCOMPL-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBAK_INCOMPL-PARVW.
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_VBAK_INCOMPL_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPRS TYPE STRING,
STATG TYPE STRING,
VBTYP TYPE STRING,
TRVOG TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
PARVW TYPE STRING,
TDID TYPE STRING,
TBNAM TYPE STRING,
FDNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBAK_INCOMPL_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_VBAK_INCOMPL_STR-MANDT sy-vline 
WA_VBAK_INCOMPL_STR-VBELN sy-vline 
WA_VBAK_INCOMPL_STR-ERNAM sy-vline 
WA_VBAK_INCOMPL_STR-ERDAT sy-vline 
WA_VBAK_INCOMPL_STR-VKORG sy-vline 
WA_VBAK_INCOMPL_STR-VTWEG sy-vline 
WA_VBAK_INCOMPL_STR-SPART sy-vline 
WA_VBAK_INCOMPL_STR-VKBUR sy-vline 
WA_VBAK_INCOMPL_STR-VKGRP sy-vline 
WA_VBAK_INCOMPL_STR-UVALL sy-vline 
WA_VBAK_INCOMPL_STR-UVVLK sy-vline 
WA_VBAK_INCOMPL_STR-UVFAK sy-vline 
WA_VBAK_INCOMPL_STR-UVPRS sy-vline 
WA_VBAK_INCOMPL_STR-STATG sy-vline 
WA_VBAK_INCOMPL_STR-VBTYP sy-vline 
WA_VBAK_INCOMPL_STR-TRVOG sy-vline 
WA_VBAK_INCOMPL_STR-POSNR sy-vline 
WA_VBAK_INCOMPL_STR-ETENR sy-vline 
WA_VBAK_INCOMPL_STR-PARVW sy-vline 
WA_VBAK_INCOMPL_STR-TDID sy-vline 
WA_VBAK_INCOMPL_STR-TBNAM sy-vline 
WA_VBAK_INCOMPL_STR-FDNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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