ABAP Select data from SAP table V_ATXKO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_ATXKO
*  INTO TABLE @DATA(IT_V_ATXKO2).
*--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_V_ATXKO INDEX 1 INTO DATA(WA_V_ATXKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_ATXKO>-MANDT = 1.
<V_ATXKO>-KORART = 1.
<V_ATXKO>-INSTRUM11 = 1.
<V_ATXKO>-INSTRUM12 = 1.
<V_ATXKO>-INSTYP1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_ATXKO-INSTRUM21, sy-vline,
  WA_V_ATXKO-INSTRUM22, sy-vline,
  WA_V_ATXKO-INSTYP2, sy-vline,
  WA_V_ATXKO-DATAB, sy-vline,
  WA_V_ATXKO-LFZEIT, sy-vline,
  WA_V_ATXKO-RHO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_ATXKO 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_V_ATXKO 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_V_ATXKO INTO WA_V_ATXKO.


*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_V_ATXKO_STR, 
MANDT TYPE STRING,
KORART TYPE STRING,
INSTRUM11 TYPE STRING,
INSTRUM12 TYPE STRING,
INSTYP1 TYPE STRING,
INSTRUM21 TYPE STRING,
INSTRUM22 TYPE STRING,
INSTYP2 TYPE STRING,
DATAB TYPE STRING,
LFZEIT TYPE STRING,
RHO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_ATXKO_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_V_ATXKO_STR-MANDT sy-vline 
WA_V_ATXKO_STR-KORART sy-vline 
WA_V_ATXKO_STR-INSTRUM11 sy-vline 
WA_V_ATXKO_STR-INSTRUM12 sy-vline 
WA_V_ATXKO_STR-INSTYP1 sy-vline 
WA_V_ATXKO_STR-INSTRUM21 sy-vline 
WA_V_ATXKO_STR-INSTRUM22 sy-vline 
WA_V_ATXKO_STR-INSTYP2 sy-vline 
WA_V_ATXKO_STR-DATAB sy-vline 
WA_V_ATXKO_STR-LFZEIT sy-vline 
WA_V_ATXKO_STR-RHO sy-vline      INTO ld_text SEPARATED BY SPACE.

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