ABAP Select data from SAP table KOMZRLE 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 KOMZRLE 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 KOMZRLE. 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 KOMZRLE 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_KOMZRLE TYPE STANDARD TABLE OF KOMZRLE,
      WA_KOMZRLE TYPE KOMZRLE,
      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: <KOMZRLE> TYPE KOMZRLE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMZRLE
*  INTO TABLE @DATA(IT_KOMZRLE2).
*--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_KOMZRLE INDEX 1 INTO DATA(WA_KOMZRLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMZRLE>-OLDNR = 1.
<KOMZRLE>-WBELN = 1.
<KOMZRLE>-WRART = 1.
<KOMZRLE>-WRTYP = 1.
<KOMZRLE>-WBTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMZRLE-LFART, sy-vline,
  WA_KOMZRLE-LFTYP, sy-vline,
  WA_KOMZRLE-WFDAT, sy-vline,
  WA_KOMZRLE-KALSM, sy-vline,
  WA_KOMZRLE-RFBSK, sy-vline,
  WA_KOMZRLE-LIFRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMZRLE 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_KOMZRLE 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_KOMZRLE INTO WA_KOMZRLE.


*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_KOMZRLE-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRLE-WBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field LIFNR_FI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRLE-LIFNR_FI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRLE-LIFNR_FI.
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_KOMZRLE_STR, 
OLDNR TYPE STRING,
WBELN TYPE STRING,
WRART TYPE STRING,
WRTYP TYPE STRING,
WBTYP TYPE STRING,
LFART TYPE STRING,
LFTYP TYPE STRING,
WFDAT TYPE STRING,
KALSM TYPE STRING,
RFBSK TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BUKRS TYPE STRING,
WAERL TYPE STRING,
WAERS_ISO TYPE STRING,
KAPPL 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,
LOGSYS TYPE STRING,
DIEKZ TYPE STRING,
LANDL TYPE STRING,
LZBKZ TYPE STRING,
BOART TYPE STRING,
LFTYPV TYPE STRING,
LFARV TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
WFDAT_RL TYPE STRING,
TESTRUN TYPE STRING,
ESTATUS TYPE STRING,
BAPI_ACTIV TYPE STRING,
ARC_DOC_ID TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
LFGRU TYPE STRING,
POST_PARTY TYPE STRING,
IDOBJ_TYPE_V TYPE STRING,
IDOBJ_VENDOR TYPE STRING,
POSTING_RULE_K TYPE STRING,
ABART TYPE STRING,
STATUS_GROUP TYPE STRING,
MODEL_ADJUSTED TYPE STRING,
PARTNER_MODEL_ADJUSTED TYPE STRING,
TEXT_MODEL_ADJUSTED TYPE STRING,
DUMMY_WBRK_INCL_EEW_PS TYPE STRING,
CID TYPE STRING,
PID TYPE STRING,
LIFNR_FI TYPE STRING,
USE_CASE TYPE STRING,
INCOMP_REASON TYPE STRING,
STCEG TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
PROCESS_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMZRLE_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_KOMZRLE_STR-OLDNR sy-vline 
WA_KOMZRLE_STR-WBELN sy-vline 
WA_KOMZRLE_STR-WRART sy-vline 
WA_KOMZRLE_STR-WRTYP sy-vline 
WA_KOMZRLE_STR-WBTYP sy-vline 
WA_KOMZRLE_STR-LFART sy-vline 
WA_KOMZRLE_STR-LFTYP sy-vline 
WA_KOMZRLE_STR-WFDAT sy-vline 
WA_KOMZRLE_STR-KALSM sy-vline 
WA_KOMZRLE_STR-RFBSK sy-vline 
WA_KOMZRLE_STR-LIFRE sy-vline 
WA_KOMZRLE_STR-LNRZB sy-vline 
WA_KOMZRLE_STR-EKORG sy-vline 
WA_KOMZRLE_STR-EKGRP sy-vline 
WA_KOMZRLE_STR-BUKRS sy-vline 
WA_KOMZRLE_STR-WAERL sy-vline 
WA_KOMZRLE_STR-WAERS_ISO sy-vline 
WA_KOMZRLE_STR-KAPPL sy-vline 
WA_KOMZRLE_STR-BLDAT sy-vline 
WA_KOMZRLE_STR-XBLNR sy-vline 
WA_KOMZRLE_STR-ZUONR sy-vline 
WA_KOMZRLE_STR-KIDNO sy-vline 
WA_KOMZRLE_STR-RBRTWR sy-vline 
WA_KOMZRLE_STR-WKURS_DAT sy-vline 
WA_KOMZRLE_STR-WKURS sy-vline 
WA_KOMZRLE_STR-KUFIX sy-vline 
WA_KOMZRLE_STR-ZTERM sy-vline 
WA_KOMZRLE_STR-ZBD1T sy-vline 
WA_KOMZRLE_STR-ZBD1P sy-vline 
WA_KOMZRLE_STR-ZBD2T sy-vline 
WA_KOMZRLE_STR-ZBD2P sy-vline 
WA_KOMZRLE_STR-ZBD3T sy-vline 
WA_KOMZRLE_STR-ZLSCH sy-vline 
WA_KOMZRLE_STR-LFART_RL sy-vline 
WA_KOMZRLE_STR-VALTG sy-vline 
WA_KOMZRLE_STR-VALDT sy-vline 
WA_KOMZRLE_STR-LOGSYS sy-vline 
WA_KOMZRLE_STR-DIEKZ sy-vline 
WA_KOMZRLE_STR-LANDL sy-vline 
WA_KOMZRLE_STR-LZBKZ sy-vline 
WA_KOMZRLE_STR-BOART sy-vline 
WA_KOMZRLE_STR-LFTYPV sy-vline 
WA_KOMZRLE_STR-LFARV sy-vline 
WA_KOMZRLE_STR-VKORG sy-vline 
WA_KOMZRLE_STR-VTWEG sy-vline 
WA_KOMZRLE_STR-SPART sy-vline 
WA_KOMZRLE_STR-WFDAT_RL sy-vline 
WA_KOMZRLE_STR-TESTRUN sy-vline 
WA_KOMZRLE_STR-ESTATUS sy-vline 
WA_KOMZRLE_STR-BAPI_ACTIV sy-vline 
WA_KOMZRLE_STR-ARC_DOC_ID sy-vline 
WA_KOMZRLE_STR-VKBUR sy-vline 
WA_KOMZRLE_STR-VKGRP sy-vline 
WA_KOMZRLE_STR-LFGRU sy-vline 
WA_KOMZRLE_STR-POST_PARTY sy-vline 
WA_KOMZRLE_STR-IDOBJ_TYPE_V sy-vline 
WA_KOMZRLE_STR-IDOBJ_VENDOR sy-vline 
WA_KOMZRLE_STR-POSTING_RULE_K sy-vline 
WA_KOMZRLE_STR-ABART sy-vline 
WA_KOMZRLE_STR-STATUS_GROUP sy-vline 
WA_KOMZRLE_STR-MODEL_ADJUSTED sy-vline 
WA_KOMZRLE_STR-PARTNER_MODEL_ADJUSTED sy-vline 
WA_KOMZRLE_STR-TEXT_MODEL_ADJUSTED sy-vline 
WA_KOMZRLE_STR-DUMMY_WBRK_INCL_EEW_PS sy-vline 
WA_KOMZRLE_STR-CID sy-vline 
WA_KOMZRLE_STR-PID sy-vline 
WA_KOMZRLE_STR-LIFNR_FI sy-vline 
WA_KOMZRLE_STR-USE_CASE sy-vline 
WA_KOMZRLE_STR-INCOMP_REASON sy-vline 
WA_KOMZRLE_STR-STCEG sy-vline 
WA_KOMZRLE_STR-INCO1 sy-vline 
WA_KOMZRLE_STR-INCO2 sy-vline 
WA_KOMZRLE_STR-INCOV sy-vline 
WA_KOMZRLE_STR-INCO2_L sy-vline 
WA_KOMZRLE_STR-INCO3_L sy-vline 
WA_KOMZRLE_STR-PROCESS_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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