ABAP Select data from SAP table KOMZRKEX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMZRKEX
*  INTO TABLE @DATA(IT_KOMZRKEX2).
*--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_KOMZRKEX INDEX 1 INTO DATA(WA_KOMZRKEX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMZRKEX>-WBELN = 1.
<KOMZRKEX>-WFDAT = 1.
<KOMZRKEX>-WAERL = 1.
<KOMZRKEX>-BLDAT = 1.
<KOMZRKEX>-XBLNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMZRKEX-ZUONR, sy-vline,
  WA_KOMZRKEX-KIDNO, sy-vline,
  WA_KOMZRKEX-RBRTWR, sy-vline,
  WA_KOMZRKEX-WKURS_DAT, sy-vline,
  WA_KOMZRKEX-WKURS, sy-vline,
  WA_KOMZRKEX-KUFIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMZRKEX 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_KOMZRKEX 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_KOMZRKEX INTO WA_KOMZRKEX.


*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 WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRKEX-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKEX-WBELN.
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_KOMZRKEX_STR, 
WBELN TYPE STRING,
WFDAT TYPE STRING,
WAERL TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
ZUONR TYPE STRING,
KIDNO TYPE STRING,
RBRTWR TYPE STRING,
WKURS_DAT TYPE STRING,
WKURS TYPE STRING,
KUFIX TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2T TYPE STRING,
ZBD2P TYPE STRING,
ZBD3T TYPE STRING,
ZLSCH TYPE STRING,
LFART_RL TYPE STRING,
VALTG TYPE STRING,
VALDT TYPE STRING,
DIEKZ TYPE STRING,
LANDL TYPE STRING,
LZBKZ TYPE STRING,
ZTERMD TYPE STRING,
ZBD1TD TYPE STRING,
ZBD1PD TYPE STRING,
ZBD2TD TYPE STRING,
ZBD2PD TYPE STRING,
ZBD3TD TYPE STRING,
ZLSCHD TYPE STRING,
VALTGD TYPE STRING,
VALDTD TYPE STRING,
WFDAT_RL TYPE STRING,
ESTATUS TYPE STRING,
WRART TYPE STRING,
LFGRU TYPE STRING,
KUNRG TYPE STRING,
LNRZB TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_TYPE TYPE STRING,
POSTING_RULE_K TYPE STRING,
POSTING_RULE_D TYPE STRING,
VKONT TYPE STRING,
RFBSK TYPE STRING,
UPDKZ TYPE STRING,
MONAT TYPE STRING,
TXKRS TYPE STRING,
TXKRS_IC TYPE STRING,
DUMMY_WBRK_INCL_EEW_PS TYPE STRING,
SERVCONF_ID TYPE STRING,
COUNTER TYPE STRING,
COUNTER_UNIT TYPE STRING,
INCOMP_REASON TYPE STRING,
SETTL_BLOCK_V TYPE STRING,
SETTL_BLOCK_C TYPE STRING,
STCEG TYPE STRING,
STCEGD TYPE STRING,
LANDTX TYPE STRING,
LAND1TX TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
LANDTX_BUKRS TYPE STRING,
LANDTX_BUKRS_DEB TYPE STRING,
IV_CHECK_TYPE_H TYPE STRING,
IV_ACCR TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMZRKEX_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_KOMZRKEX_STR-WBELN sy-vline 
WA_KOMZRKEX_STR-WFDAT sy-vline 
WA_KOMZRKEX_STR-WAERL sy-vline 
WA_KOMZRKEX_STR-BLDAT sy-vline 
WA_KOMZRKEX_STR-XBLNR sy-vline 
WA_KOMZRKEX_STR-ZUONR sy-vline 
WA_KOMZRKEX_STR-KIDNO sy-vline 
WA_KOMZRKEX_STR-RBRTWR sy-vline 
WA_KOMZRKEX_STR-WKURS_DAT sy-vline 
WA_KOMZRKEX_STR-WKURS sy-vline 
WA_KOMZRKEX_STR-KUFIX sy-vline 
WA_KOMZRKEX_STR-ZTERM sy-vline 
WA_KOMZRKEX_STR-ZBD1T sy-vline 
WA_KOMZRKEX_STR-ZBD1P sy-vline 
WA_KOMZRKEX_STR-ZBD2T sy-vline 
WA_KOMZRKEX_STR-ZBD2P sy-vline 
WA_KOMZRKEX_STR-ZBD3T sy-vline 
WA_KOMZRKEX_STR-ZLSCH sy-vline 
WA_KOMZRKEX_STR-LFART_RL sy-vline 
WA_KOMZRKEX_STR-VALTG sy-vline 
WA_KOMZRKEX_STR-VALDT sy-vline 
WA_KOMZRKEX_STR-DIEKZ sy-vline 
WA_KOMZRKEX_STR-LANDL sy-vline 
WA_KOMZRKEX_STR-LZBKZ sy-vline 
WA_KOMZRKEX_STR-ZTERMD sy-vline 
WA_KOMZRKEX_STR-ZBD1TD sy-vline 
WA_KOMZRKEX_STR-ZBD1PD sy-vline 
WA_KOMZRKEX_STR-ZBD2TD sy-vline 
WA_KOMZRKEX_STR-ZBD2PD sy-vline 
WA_KOMZRKEX_STR-ZBD3TD sy-vline 
WA_KOMZRKEX_STR-ZLSCHD sy-vline 
WA_KOMZRKEX_STR-VALTGD sy-vline 
WA_KOMZRKEX_STR-VALDTD sy-vline 
WA_KOMZRKEX_STR-WFDAT_RL sy-vline 
WA_KOMZRKEX_STR-ESTATUS sy-vline 
WA_KOMZRKEX_STR-WRART sy-vline 
WA_KOMZRKEX_STR-LFGRU sy-vline 
WA_KOMZRKEX_STR-KUNRG sy-vline 
WA_KOMZRKEX_STR-LNRZB sy-vline 
WA_KOMZRKEX_STR-CONTRACT sy-vline 
WA_KOMZRKEX_STR-CONTRACT_TYPE sy-vline 
WA_KOMZRKEX_STR-POSTING_RULE_K sy-vline 
WA_KOMZRKEX_STR-POSTING_RULE_D sy-vline 
WA_KOMZRKEX_STR-VKONT sy-vline 
WA_KOMZRKEX_STR-RFBSK sy-vline 
WA_KOMZRKEX_STR-UPDKZ sy-vline 
WA_KOMZRKEX_STR-MONAT sy-vline 
WA_KOMZRKEX_STR-TXKRS sy-vline 
WA_KOMZRKEX_STR-TXKRS_IC sy-vline 
WA_KOMZRKEX_STR-DUMMY_WBRK_INCL_EEW_PS sy-vline 
WA_KOMZRKEX_STR-SERVCONF_ID sy-vline 
WA_KOMZRKEX_STR-COUNTER sy-vline 
WA_KOMZRKEX_STR-COUNTER_UNIT sy-vline 
WA_KOMZRKEX_STR-INCOMP_REASON sy-vline 
WA_KOMZRKEX_STR-SETTL_BLOCK_V sy-vline 
WA_KOMZRKEX_STR-SETTL_BLOCK_C sy-vline 
WA_KOMZRKEX_STR-STCEG sy-vline 
WA_KOMZRKEX_STR-STCEGD sy-vline 
WA_KOMZRKEX_STR-LANDTX sy-vline 
WA_KOMZRKEX_STR-LAND1TX sy-vline 
WA_KOMZRKEX_STR-INCO1 sy-vline 
WA_KOMZRKEX_STR-INCO2 sy-vline 
WA_KOMZRKEX_STR-INCOV sy-vline 
WA_KOMZRKEX_STR-INCO2_L sy-vline 
WA_KOMZRKEX_STR-INCO3_L sy-vline 
WA_KOMZRKEX_STR-LANDTX_BUKRS sy-vline 
WA_KOMZRKEX_STR-LANDTX_BUKRS_DEB sy-vline 
WA_KOMZRKEX_STR-IV_CHECK_TYPE_H sy-vline 
WA_KOMZRKEX_STR-IV_ACCR sy-vline 
WA_KOMZRKEX_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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