ABAP Select data from SAP table KOMZRKES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMZRKES
*  INTO TABLE @DATA(IT_KOMZRKES2).
*--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_KOMZRKES INDEX 1 INTO DATA(WA_KOMZRKES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMZRKES>-WRART = 1.
<KOMZRKES>-WRTYP = 1.
<KOMZRKES>-LFART = 1.
<KOMZRKES>-LFTYP = 1.
<KOMZRKES>-KALSM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMZRKES-KALSMD, sy-vline,
  WA_KOMZRKES-EKORG, sy-vline,
  WA_KOMZRKES-EKGRP, sy-vline,
  WA_KOMZRKES-VKORG, sy-vline,
  WA_KOMZRKES-VTWEG, sy-vline,
  WA_KOMZRKES-SPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMZRKES 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_KOMZRKES 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_KOMZRKES INTO WA_KOMZRKES.


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

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

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

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

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

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

*Conversion exit EXCRT, internal->external for field TXKRS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRKES-TXKRS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKES-TXKRS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field TXKRS_IC
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRKES-TXKRS_IC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKES-TXKRS_IC.
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_KOMZRKES_STR, 
WRART TYPE STRING,
WRTYP TYPE STRING,
LFART TYPE STRING,
LFTYP TYPE STRING,
KALSM TYPE STRING,
KALSMD TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
BUKRS TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
ZTERM TYPE STRING,
ZLSCH TYPE STRING,
ZTERMD TYPE STRING,
ZLSCHD TYPE STRING,
KUNRE TYPE STRING,
KUNRG TYPE STRING,
KIDNO TYPE STRING,
RBRTWR TYPE STRING,
WAERL TYPE STRING,
VALDT TYPE STRING,
VALDTD TYPE STRING,
ESTATUS TYPE STRING,
STCEG TYPE STRING,
STCEGD TYPE STRING,
LANDTX TYPE STRING,
LAND1TX TYPE STRING,
LANDL TYPE STRING,
DATUM TYPE STRING,
LIFNR_FI TYPE STRING,
INCO1 TYPE STRING,
INCOV TYPE STRING,
LFGRU TYPE STRING,
BUKRS_DEB TYPE STRING,
VKONT TYPE STRING,
PERNR TYPE STRING,
SETTL_COMPN_RSN TYPE STRING,
TVTA TYPE STRING,
XBLNR TYPE STRING,
TXKRS TYPE STRING,
TXKRS_IC TYPE STRING,
COMPN_VARIANT TYPE STRING,
HXF_BTT_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMZRKES_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_KOMZRKES_STR-WRART sy-vline 
WA_KOMZRKES_STR-WRTYP sy-vline 
WA_KOMZRKES_STR-LFART sy-vline 
WA_KOMZRKES_STR-LFTYP sy-vline 
WA_KOMZRKES_STR-KALSM sy-vline 
WA_KOMZRKES_STR-KALSMD sy-vline 
WA_KOMZRKES_STR-EKORG sy-vline 
WA_KOMZRKES_STR-EKGRP sy-vline 
WA_KOMZRKES_STR-VKORG sy-vline 
WA_KOMZRKES_STR-VTWEG sy-vline 
WA_KOMZRKES_STR-SPART sy-vline 
WA_KOMZRKES_STR-VKBUR sy-vline 
WA_KOMZRKES_STR-VKGRP sy-vline 
WA_KOMZRKES_STR-BUKRS sy-vline 
WA_KOMZRKES_STR-LIFRE sy-vline 
WA_KOMZRKES_STR-LNRZB sy-vline 
WA_KOMZRKES_STR-ZTERM sy-vline 
WA_KOMZRKES_STR-ZLSCH sy-vline 
WA_KOMZRKES_STR-ZTERMD sy-vline 
WA_KOMZRKES_STR-ZLSCHD sy-vline 
WA_KOMZRKES_STR-KUNRE sy-vline 
WA_KOMZRKES_STR-KUNRG sy-vline 
WA_KOMZRKES_STR-KIDNO sy-vline 
WA_KOMZRKES_STR-RBRTWR sy-vline 
WA_KOMZRKES_STR-WAERL sy-vline 
WA_KOMZRKES_STR-VALDT sy-vline 
WA_KOMZRKES_STR-VALDTD sy-vline 
WA_KOMZRKES_STR-ESTATUS sy-vline 
WA_KOMZRKES_STR-STCEG sy-vline 
WA_KOMZRKES_STR-STCEGD sy-vline 
WA_KOMZRKES_STR-LANDTX sy-vline 
WA_KOMZRKES_STR-LAND1TX sy-vline 
WA_KOMZRKES_STR-LANDL sy-vline 
WA_KOMZRKES_STR-DATUM sy-vline 
WA_KOMZRKES_STR-LIFNR_FI sy-vline 
WA_KOMZRKES_STR-INCO1 sy-vline 
WA_KOMZRKES_STR-INCOV sy-vline 
WA_KOMZRKES_STR-LFGRU sy-vline 
WA_KOMZRKES_STR-BUKRS_DEB sy-vline 
WA_KOMZRKES_STR-VKONT sy-vline 
WA_KOMZRKES_STR-PERNR sy-vline 
WA_KOMZRKES_STR-SETTL_COMPN_RSN sy-vline 
WA_KOMZRKES_STR-TVTA sy-vline 
WA_KOMZRKES_STR-XBLNR sy-vline 
WA_KOMZRKES_STR-TXKRS sy-vline 
WA_KOMZRKES_STR-TXKRS_IC sy-vline 
WA_KOMZRKES_STR-COMPN_VARIANT sy-vline 
WA_KOMZRKES_STR-HXF_BTT_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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