ABAP Select data from SAP table KONVD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KONVD 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 KONVD. 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 KONVD 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_KONVD TYPE STANDARD TABLE OF KONVD,
      WA_KONVD TYPE KONVD,
      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: <KONVD> TYPE KONVD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KONVD
*  INTO TABLE @DATA(IT_KONVD2).
*--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_KONVD INDEX 1 INTO DATA(WA_KONVD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KONVD>-PRSCH = 1.
<KONVD>-KOFRM = 1.
<KONVD>-STFKZ = 1.
<KONVD>-KSTBM = 1.
<KONVD>-KSTBM_NEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KONVD-IX_KOMT1, sy-vline,
  WA_KONVD-IX_GKOMV, sy-vline,
  WA_KONVD-ZAEHK_IND, sy-vline,
  WA_KONVD-DRUKZ, sy-vline,
  WA_KONVD-STUNB, sy-vline,
  WA_KONVD-STUN2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KONVD 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_KONVD 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_KONVD INTO WA_KONVD.


*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 KNUMA_BO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KONVD-KNUMA_BO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KONVD-KNUMA_BO.
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_KONVD_STR, 
PRSCH TYPE STRING,
KOFRM TYPE STRING,
STFKZ TYPE STRING,
KSTBM TYPE STRING,
KSTBM_NEXT TYPE STRING,
IX_KOMT1 TYPE STRING,
IX_GKOMV TYPE STRING,
ZAEHK_IND TYPE STRING,
DRUKZ TYPE STRING,
STUNB TYPE STRING,
STUN2 TYPE STRING,
KZWIW TYPE STRING,
KOFRA TYPE STRING,
KOFRS TYPE STRING,
KMANU TYPE STRING,
TXPRF TYPE STRING,
KNEGA TYPE STRING,
GANZZ TYPE STRING,
KOBLI TYPE STRING,
KAEND_BTR TYPE STRING,
KAEND_WRT TYPE STRING,
KAEND_UFK TYPE STRING,
KAEND_RCH TYPE STRING,
KAEND_LOE TYPE STRING,
KAEND_MEH TYPE STRING,
KZTERM TYPE STRING,
FXMSG TYPE STRING,
UPDKZ TYPE STRING,
SELKZ TYPE STRING,
BOSTA TYPE STRING,
KSPAE TYPE STRING,
LOEVM_KO TYPE STRING,
KNUMA_BO TYPE STRING,
BERGL TYPE STRING,
VHART TYPE STRING,
RDIFA TYPE STRING,
KMENG TYPE STRING,
KBUFF TYPE STRING,
BOSTA_CR TYPE STRING,
IS_CPF_ENABLED TYPE STRING,
IS_QTYCNVFCT_ENABLED TYPE STRING,
QTYCNVFCT_APPLIED TYPE STRING,
SBZRR TYPE STRING,
PURP TYPE STRING,
CCS_USAGE TYPE STRING,
AMOUNT_PER_SALES_UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KONVD_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_KONVD_STR-PRSCH sy-vline 
WA_KONVD_STR-KOFRM sy-vline 
WA_KONVD_STR-STFKZ sy-vline 
WA_KONVD_STR-KSTBM sy-vline 
WA_KONVD_STR-KSTBM_NEXT sy-vline 
WA_KONVD_STR-IX_KOMT1 sy-vline 
WA_KONVD_STR-IX_GKOMV sy-vline 
WA_KONVD_STR-ZAEHK_IND sy-vline 
WA_KONVD_STR-DRUKZ sy-vline 
WA_KONVD_STR-STUNB sy-vline 
WA_KONVD_STR-STUN2 sy-vline 
WA_KONVD_STR-KZWIW sy-vline 
WA_KONVD_STR-KOFRA sy-vline 
WA_KONVD_STR-KOFRS sy-vline 
WA_KONVD_STR-KMANU sy-vline 
WA_KONVD_STR-TXPRF sy-vline 
WA_KONVD_STR-KNEGA sy-vline 
WA_KONVD_STR-GANZZ sy-vline 
WA_KONVD_STR-KOBLI sy-vline 
WA_KONVD_STR-KAEND_BTR sy-vline 
WA_KONVD_STR-KAEND_WRT sy-vline 
WA_KONVD_STR-KAEND_UFK sy-vline 
WA_KONVD_STR-KAEND_RCH sy-vline 
WA_KONVD_STR-KAEND_LOE sy-vline 
WA_KONVD_STR-KAEND_MEH sy-vline 
WA_KONVD_STR-KZTERM sy-vline 
WA_KONVD_STR-FXMSG sy-vline 
WA_KONVD_STR-UPDKZ sy-vline 
WA_KONVD_STR-SELKZ sy-vline 
WA_KONVD_STR-BOSTA sy-vline 
WA_KONVD_STR-KSPAE sy-vline 
WA_KONVD_STR-LOEVM_KO sy-vline 
WA_KONVD_STR-KNUMA_BO sy-vline 
WA_KONVD_STR-BERGL sy-vline 
WA_KONVD_STR-VHART sy-vline 
WA_KONVD_STR-RDIFA sy-vline 
WA_KONVD_STR-KMENG sy-vline 
WA_KONVD_STR-KBUFF sy-vline 
WA_KONVD_STR-BOSTA_CR sy-vline 
WA_KONVD_STR-IS_CPF_ENABLED sy-vline 
WA_KONVD_STR-IS_QTYCNVFCT_ENABLED sy-vline 
WA_KONVD_STR-QTYCNVFCT_APPLIED sy-vline 
WA_KONVD_STR-SBZRR sy-vline 
WA_KONVD_STR-PURP sy-vline 
WA_KONVD_STR-CCS_USAGE sy-vline 
WA_KONVD_STR-AMOUNT_PER_SALES_UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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