ABAP Select data from SAP table V46R_HEADKOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V46R_HEADKOM 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 V46R_HEADKOM. 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 V46R_HEADKOM 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_V46R_HEADKOM TYPE STANDARD TABLE OF V46R_HEADKOM,
      WA_V46R_HEADKOM TYPE V46R_HEADKOM,
      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: <V46R_HEADKOM> TYPE V46R_HEADKOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V46R_HEADKOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V46R_HEADKOM
  INTO TABLE IT_V46R_HEADKOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V46R_HEADKOM
*  INTO TABLE @DATA(IT_V46R_HEADKOM2).
*--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_V46R_HEADKOM INDEX 1 INTO DATA(WA_V46R_HEADKOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V46R_HEADKOM ASSIGNING <V46R_HEADKOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V46R_HEADKOM>-SCHEME = 1.
<V46R_HEADKOM>-MATNR_S = 1.
<V46R_HEADKOM>-BASME_G = 1.
<V46R_HEADKOM>-MATNR_G = 1.
<V46R_HEADKOM>-ARKTX_G = 1.

ENDLOOP.

LOOP AT IT_V46R_HEADKOM INTO WA_V46R_HEADKOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V46R_HEADKOM-MANFO, sy-vline,
  WA_V46R_HEADKOM-MFAKT, sy-vline,
  WA_V46R_HEADKOM-MIREP, sy-vline,
  WA_V46R_HEADKOM-MLIEF, sy-vline,
  WA_V46R_HEADKOM-MREPA, sy-vline,
  WA_V46R_HEADKOM-MRLWE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V46R_HEADKOM 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_V46R_HEADKOM 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_V46R_HEADKOM INTO WA_V46R_HEADKOM.


*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 MATN1, internal->external for field MATNR_S
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V46R_HEADKOM-MATNR_S
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V46R_HEADKOM-MATNR_S.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME_G
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V46R_HEADKOM-BASME_G
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V46R_HEADKOM-BASME_G.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_G
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V46R_HEADKOM-MATNR_G
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V46R_HEADKOM-MATNR_G.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V46R_HEADKOM-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V46R_HEADKOM-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V46R_HEADKOM-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V46R_HEADKOM-QMNUM.
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_V46R_HEADKOM_STR, 
SCHEME TYPE STRING,
MATNR_S TYPE STRING,
BASME_G TYPE STRING,
MATNR_G TYPE STRING,
ARKTX_G TYPE STRING,
MANFO TYPE STRING,
MFAKT TYPE STRING,
MIREP TYPE STRING,
MLIEF TYPE STRING,
MREPA TYPE STRING,
MRLWE TYPE STRING,
MALIF TYPE STRING,
MRLIF TYPE STRING,
MRETO TYPE STRING,
MLEIK TYPE STRING,
MSCHR TYPE STRING,
STATUS_CHECK TYPE STRING,
STATUS_DETER TYPE STRING,
STATUS_REPAI TYPE STRING,
FLG_VE TYPE STRING,
FLG_IREP TYPE STRING,
FLG_TREP TYPE STRING,
FLG_REPA TYPE STRING,
FLG_KZEN TYPE STRING,
FLG_KENT TYPE STRING,
FLG_PAKT TYPE STRING,
FLG_MABG TYPE STRING,
OMERA TYPE STRING,
OMERS TYPE STRING,
OMERR TYPE STRING,
OMENG TYPE STRING,
DYNPO TYPE STRING,
FAKTU TYPE STRING,
VBKLT TYPE STRING,
VBELN TYPE STRING,
QMNUM TYPE STRING,
TXT_VBELN TYPE STRING,
NETWR TYPE STRING,
WAERK TYPE STRING,
FFPRF TYPE STRING,
FAKTF TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V46R_HEADKOM_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_V46R_HEADKOM_STR-SCHEME sy-vline 
WA_V46R_HEADKOM_STR-MATNR_S sy-vline 
WA_V46R_HEADKOM_STR-BASME_G sy-vline 
WA_V46R_HEADKOM_STR-MATNR_G sy-vline 
WA_V46R_HEADKOM_STR-ARKTX_G sy-vline 
WA_V46R_HEADKOM_STR-MANFO sy-vline 
WA_V46R_HEADKOM_STR-MFAKT sy-vline 
WA_V46R_HEADKOM_STR-MIREP sy-vline 
WA_V46R_HEADKOM_STR-MLIEF sy-vline 
WA_V46R_HEADKOM_STR-MREPA sy-vline 
WA_V46R_HEADKOM_STR-MRLWE sy-vline 
WA_V46R_HEADKOM_STR-MALIF sy-vline 
WA_V46R_HEADKOM_STR-MRLIF sy-vline 
WA_V46R_HEADKOM_STR-MRETO sy-vline 
WA_V46R_HEADKOM_STR-MLEIK sy-vline 
WA_V46R_HEADKOM_STR-MSCHR sy-vline 
WA_V46R_HEADKOM_STR-STATUS_CHECK sy-vline 
WA_V46R_HEADKOM_STR-STATUS_DETER sy-vline 
WA_V46R_HEADKOM_STR-STATUS_REPAI sy-vline 
WA_V46R_HEADKOM_STR-FLG_VE sy-vline 
WA_V46R_HEADKOM_STR-FLG_IREP sy-vline 
WA_V46R_HEADKOM_STR-FLG_TREP sy-vline 
WA_V46R_HEADKOM_STR-FLG_REPA sy-vline 
WA_V46R_HEADKOM_STR-FLG_KZEN sy-vline 
WA_V46R_HEADKOM_STR-FLG_KENT sy-vline 
WA_V46R_HEADKOM_STR-FLG_PAKT sy-vline 
WA_V46R_HEADKOM_STR-FLG_MABG sy-vline 
WA_V46R_HEADKOM_STR-OMERA sy-vline 
WA_V46R_HEADKOM_STR-OMERS sy-vline 
WA_V46R_HEADKOM_STR-OMERR sy-vline 
WA_V46R_HEADKOM_STR-OMENG sy-vline 
WA_V46R_HEADKOM_STR-DYNPO sy-vline 
WA_V46R_HEADKOM_STR-FAKTU sy-vline 
WA_V46R_HEADKOM_STR-VBKLT sy-vline 
WA_V46R_HEADKOM_STR-VBELN sy-vline 
WA_V46R_HEADKOM_STR-QMNUM sy-vline 
WA_V46R_HEADKOM_STR-TXT_VBELN sy-vline 
WA_V46R_HEADKOM_STR-NETWR sy-vline 
WA_V46R_HEADKOM_STR-WAERK sy-vline 
WA_V46R_HEADKOM_STR-FFPRF sy-vline 
WA_V46R_HEADKOM_STR-FAKTF sy-vline 
WA_V46R_HEADKOM_STR-VKORG sy-vline 
WA_V46R_HEADKOM_STR-VTWEG sy-vline      INTO ld_text SEPARATED BY SPACE.

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