ABAP Select data from SAP table VKKKCUSTOD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKKKCUSTOD
*  INTO TABLE @DATA(IT_VKKKCUSTOD2).
*--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_VKKKCUSTOD INDEX 1 INTO DATA(WA_VKKKCUSTOD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKKKCUSTOD>-BETRW = 1.
<VKKKCUSTOD>-BUGRD = 1.
<VKKKCUSTOD>-FOKNZ = 1.
<VKKKCUSTOD>-BUKRS = 1.
<VKKKCUSTOD>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKKKCUSTOD-LNDSL, sy-vline,
  WA_VKKKCUSTOD-PRGRP, sy-vline,
  WA_VKKKCUSTOD-VKONT, sy-vline,
  WA_VKKKCUSTOD-GPART, sy-vline,
  WA_VKKKCUSTOD-EMGPA, sy-vline,
  WA_VKKKCUSTOD-EMADE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKKKCUSTOD 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_VKKKCUSTOD 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_VKKKCUSTOD INTO WA_VKKKCUSTOD.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKKKCUSTOD-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKKKCUSTOD-PRCTR.
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_VKKKCUSTOD_STR, 
BETRW TYPE STRING,
BUGRD TYPE STRING,
FOKNZ TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
LNDSL TYPE STRING,
PRGRP TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
EMGPA TYPE STRING,
EMADE TYPE STRING,
EMBVT TYPE STRING,
PYMET TYPE STRING,
INDYN TYPE STRING,
INFAK TYPE STRING,
RBART TYPE STRING,
RBZNR TYPE STRING,
ABWRA TYPE STRING,
ABWRN TYPE STRING,
ERGRA TYPE STRING,
ERGRN TYPE STRING,
STPRZ TYPE STRING,
BEWAR TYPE STRING,
VSARL_VX TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
DUMMY_FKKOP_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKKKCUSTOD_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_VKKKCUSTOD_STR-BETRW sy-vline 
WA_VKKKCUSTOD_STR-BUGRD sy-vline 
WA_VKKKCUSTOD_STR-FOKNZ sy-vline 
WA_VKKKCUSTOD_STR-BUKRS sy-vline 
WA_VKKKCUSTOD_STR-GSBER sy-vline 
WA_VKKKCUSTOD_STR-LNDSL sy-vline 
WA_VKKKCUSTOD_STR-PRGRP sy-vline 
WA_VKKKCUSTOD_STR-VKONT sy-vline 
WA_VKKKCUSTOD_STR-GPART sy-vline 
WA_VKKKCUSTOD_STR-EMGPA sy-vline 
WA_VKKKCUSTOD_STR-EMADE sy-vline 
WA_VKKKCUSTOD_STR-EMBVT sy-vline 
WA_VKKKCUSTOD_STR-PYMET sy-vline 
WA_VKKKCUSTOD_STR-INDYN sy-vline 
WA_VKKKCUSTOD_STR-INFAK sy-vline 
WA_VKKKCUSTOD_STR-RBART sy-vline 
WA_VKKKCUSTOD_STR-RBZNR sy-vline 
WA_VKKKCUSTOD_STR-ABWRA sy-vline 
WA_VKKKCUSTOD_STR-ABWRN sy-vline 
WA_VKKKCUSTOD_STR-ERGRA sy-vline 
WA_VKKKCUSTOD_STR-ERGRN sy-vline 
WA_VKKKCUSTOD_STR-STPRZ sy-vline 
WA_VKKKCUSTOD_STR-BEWAR sy-vline 
WA_VKKKCUSTOD_STR-VSARL_VX sy-vline 
WA_VKKKCUSTOD_STR-KOSTL sy-vline 
WA_VKKKCUSTOD_STR-PRCTR sy-vline 
WA_VKKKCUSTOD_STR-DUMMY_FKKOP_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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