ABAP Select data from SAP table KOMLRK_LI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLRK_LI
*  INTO TABLE @DATA(IT_KOMLRK_LI2).
*--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_KOMLRK_LI INDEX 1 INTO DATA(WA_KOMLRK_LI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLRK_LI>-WBELN = 1.
<KOMLRK_LI>-WBELN_RL = 1.
<KOMLRK_LI>-LFART = 1.
<KOMLRK_LI>-LFART_TXT = 1.
<KOMLRK_LI>-WRART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLRK_LI-WRART_TXT, sy-vline,
  WA_KOMLRK_LI-WFDAT, sy-vline,
  WA_KOMLRK_LI-WFDAT_RL, sy-vline,
  WA_KOMLRK_LI-BLDAT, sy-vline,
  WA_KOMLRK_LI-EKORG, sy-vline,
  WA_KOMLRK_LI-EKGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLRK_LI 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_KOMLRK_LI 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_KOMLRK_LI INTO WA_KOMLRK_LI.


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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLRK_LI-CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLRK_LI-CONTRACT.
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_KOMLRK_LI_STR, 
WBELN TYPE STRING,
WBELN_RL TYPE STRING,
LFART TYPE STRING,
LFART_TXT TYPE STRING,
WRART TYPE STRING,
WRART_TXT TYPE STRING,
WFDAT TYPE STRING,
WFDAT_RL TYPE STRING,
BLDAT TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
BUKRS TYPE STRING,
SPART TYPE STRING,
WAERL TYPE STRING,
NETWR TYPE STRING,
MWSBK TYPE STRING,
BRTWR TYPE STRING,
NETWRD TYPE STRING,
MWSBKD TYPE STRING,
BRTWRD TYPE STRING,
LIFRE TYPE STRING,
LIF_NAME1 TYPE STRING,
LNRZB TYPE STRING,
LZB_NAME1 TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2T TYPE STRING,
ZBD2P TYPE STRING,
ZBD3T TYPE STRING,
ZLSCH TYPE STRING,
KUNRE TYPE STRING,
KND_NAME1 TYPE STRING,
KUNRG TYPE STRING,
KRG_NAME1 TYPE STRING,
ZTERMD TYPE STRING,
ZBD1TD TYPE STRING,
ZBD1PD TYPE STRING,
ZBD2TD TYPE STRING,
ZBD2PD TYPE STRING,
ZBD3TD TYPE STRING,
ZLSCHD TYPE STRING,
RFBSK TYPE STRING,
RFBSK_TXT TYPE STRING,
ZUONR TYPE STRING,
XBLNR TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
LFTYP TYPE STRING,
VTEXT TYPE STRING,
WRTYP TYPE STRING,
ARCHIV TYPE STRING,
SELKZ TYPE STRING,
FKSTO TYPE STRING,
LFAKS TYPE STRING,
ESTATUS TYPE STRING,
ADRNR_RE TYPE STRING,
ADDR_TYPE_RE TYPE STRING,
ADRNP_RE TYPE STRING,
ADRNR_RS TYPE STRING,
ADRNR_RG TYPE STRING,
ADRNR_AZ TYPE STRING,
LIFNR_FI TYPE STRING,
LIFNR_FI_NAME1 TYPE STRING,
CONTRACT TYPE STRING,
SETTLEMENT_DATE TYPE STRING,
WDTYP TYPE STRING,
CONTR_TYPE TYPE STRING,
PROCESS_VARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLRK_LI_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_KOMLRK_LI_STR-WBELN sy-vline 
WA_KOMLRK_LI_STR-WBELN_RL sy-vline 
WA_KOMLRK_LI_STR-LFART sy-vline 
WA_KOMLRK_LI_STR-LFART_TXT sy-vline 
WA_KOMLRK_LI_STR-WRART sy-vline 
WA_KOMLRK_LI_STR-WRART_TXT sy-vline 
WA_KOMLRK_LI_STR-WFDAT sy-vline 
WA_KOMLRK_LI_STR-WFDAT_RL sy-vline 
WA_KOMLRK_LI_STR-BLDAT sy-vline 
WA_KOMLRK_LI_STR-EKORG sy-vline 
WA_KOMLRK_LI_STR-EKGRP sy-vline 
WA_KOMLRK_LI_STR-VKORG sy-vline 
WA_KOMLRK_LI_STR-VTWEG sy-vline 
WA_KOMLRK_LI_STR-BUKRS sy-vline 
WA_KOMLRK_LI_STR-SPART sy-vline 
WA_KOMLRK_LI_STR-WAERL sy-vline 
WA_KOMLRK_LI_STR-NETWR sy-vline 
WA_KOMLRK_LI_STR-MWSBK sy-vline 
WA_KOMLRK_LI_STR-BRTWR sy-vline 
WA_KOMLRK_LI_STR-NETWRD sy-vline 
WA_KOMLRK_LI_STR-MWSBKD sy-vline 
WA_KOMLRK_LI_STR-BRTWRD sy-vline 
WA_KOMLRK_LI_STR-LIFRE sy-vline 
WA_KOMLRK_LI_STR-LIF_NAME1 sy-vline 
WA_KOMLRK_LI_STR-LNRZB sy-vline 
WA_KOMLRK_LI_STR-LZB_NAME1 sy-vline 
WA_KOMLRK_LI_STR-ZTERM sy-vline 
WA_KOMLRK_LI_STR-ZBD1T sy-vline 
WA_KOMLRK_LI_STR-ZBD1P sy-vline 
WA_KOMLRK_LI_STR-ZBD2T sy-vline 
WA_KOMLRK_LI_STR-ZBD2P sy-vline 
WA_KOMLRK_LI_STR-ZBD3T sy-vline 
WA_KOMLRK_LI_STR-ZLSCH sy-vline 
WA_KOMLRK_LI_STR-KUNRE sy-vline 
WA_KOMLRK_LI_STR-KND_NAME1 sy-vline 
WA_KOMLRK_LI_STR-KUNRG sy-vline 
WA_KOMLRK_LI_STR-KRG_NAME1 sy-vline 
WA_KOMLRK_LI_STR-ZTERMD sy-vline 
WA_KOMLRK_LI_STR-ZBD1TD sy-vline 
WA_KOMLRK_LI_STR-ZBD1PD sy-vline 
WA_KOMLRK_LI_STR-ZBD2TD sy-vline 
WA_KOMLRK_LI_STR-ZBD2PD sy-vline 
WA_KOMLRK_LI_STR-ZBD3TD sy-vline 
WA_KOMLRK_LI_STR-ZLSCHD sy-vline 
WA_KOMLRK_LI_STR-RFBSK sy-vline 
WA_KOMLRK_LI_STR-RFBSK_TXT sy-vline 
WA_KOMLRK_LI_STR-ZUONR sy-vline 
WA_KOMLRK_LI_STR-XBLNR sy-vline 
WA_KOMLRK_LI_STR-ERDAT sy-vline 
WA_KOMLRK_LI_STR-ERNAM sy-vline 
WA_KOMLRK_LI_STR-LFTYP sy-vline 
WA_KOMLRK_LI_STR-VTEXT sy-vline 
WA_KOMLRK_LI_STR-WRTYP sy-vline 
WA_KOMLRK_LI_STR-ARCHIV sy-vline 
WA_KOMLRK_LI_STR-SELKZ sy-vline 
WA_KOMLRK_LI_STR-FKSTO sy-vline 
WA_KOMLRK_LI_STR-LFAKS sy-vline 
WA_KOMLRK_LI_STR-ESTATUS sy-vline 
WA_KOMLRK_LI_STR-ADRNR_RE sy-vline 
WA_KOMLRK_LI_STR-ADDR_TYPE_RE sy-vline 
WA_KOMLRK_LI_STR-ADRNP_RE sy-vline 
WA_KOMLRK_LI_STR-ADRNR_RS sy-vline 
WA_KOMLRK_LI_STR-ADRNR_RG sy-vline 
WA_KOMLRK_LI_STR-ADRNR_AZ sy-vline 
WA_KOMLRK_LI_STR-LIFNR_FI sy-vline 
WA_KOMLRK_LI_STR-LIFNR_FI_NAME1 sy-vline 
WA_KOMLRK_LI_STR-CONTRACT sy-vline 
WA_KOMLRK_LI_STR-SETTLEMENT_DATE sy-vline 
WA_KOMLRK_LI_STR-WDTYP sy-vline 
WA_KOMLRK_LI_STR-CONTR_TYPE sy-vline 
WA_KOMLRK_LI_STR-PROCESS_VARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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