ABAP Select data from SAP table VKOPOSTEU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKOPOSTEU
*  INTO TABLE @DATA(IT_VKOPOSTEU2).
*--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_VKOPOSTEU INDEX 1 INTO DATA(WA_VKOPOSTEU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKOPOSTEU>-SKOART = 1.
<VKOPOSTEU>-SKOGRP = 1.
<VKOPOSTEU>-AUSWAHL = 1.
<VKOPOSTEU>-SKOAREF = 1.
<VKOPOSTEU>-SBEWSOLL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKOPOSTEU-SBEWHABEN, sy-vline,
  WA_VKOPOSTEU-SBEWZITI, sy-vline,
  WA_VKOPOSTEU-SDOKU, sy-vline,
  WA_VKOPOSTEU-SBERFIMA, sy-vline,
  WA_VKOPOSTEU-XKOARTM, sy-vline,
  WA_VKOPOSTEU-JMUSS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKOPOSTEU 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_VKOPOSTEU 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_VKOPOSTEU INTO WA_VKOPOSTEU.


*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_VKOPOSTEU_STR, 
SKOART TYPE STRING,
SKOGRP TYPE STRING,
AUSWAHL TYPE STRING,
SKOAREF TYPE STRING,
SBEWSOLL TYPE STRING,
SBEWHABEN TYPE STRING,
SBEWZITI TYPE STRING,
SDOKU TYPE STRING,
SBERFIMA TYPE STRING,
XKOARTM TYPE STRING,
JMUSS TYPE STRING,
JAUSBL TYPE STRING,
NFOLGE TYPE STRING,
NHIER TYPE STRING,
SZADRI TYPE STRING,
SZART TYPE STRING,
JSAVEDEF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKOPOSTEU_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_VKOPOSTEU_STR-SKOART sy-vline 
WA_VKOPOSTEU_STR-SKOGRP sy-vline 
WA_VKOPOSTEU_STR-AUSWAHL sy-vline 
WA_VKOPOSTEU_STR-SKOAREF sy-vline 
WA_VKOPOSTEU_STR-SBEWSOLL sy-vline 
WA_VKOPOSTEU_STR-SBEWHABEN sy-vline 
WA_VKOPOSTEU_STR-SBEWZITI sy-vline 
WA_VKOPOSTEU_STR-SDOKU sy-vline 
WA_VKOPOSTEU_STR-SBERFIMA sy-vline 
WA_VKOPOSTEU_STR-XKOARTM sy-vline 
WA_VKOPOSTEU_STR-JMUSS sy-vline 
WA_VKOPOSTEU_STR-JAUSBL sy-vline 
WA_VKOPOSTEU_STR-NFOLGE sy-vline 
WA_VKOPOSTEU_STR-NHIER sy-vline 
WA_VKOPOSTEU_STR-SZADRI sy-vline 
WA_VKOPOSTEU_STR-SZART sy-vline 
WA_VKOPOSTEU_STR-JSAVEDEF sy-vline      INTO ld_text SEPARATED BY SPACE.

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