ABAP Select data from SAP table KOMV_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMV_UI
*  INTO TABLE @DATA(IT_KOMV_UI2).
*--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_KOMV_UI INDEX 1 INTO DATA(WA_KOMV_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMV_UI>-KNUMV = 1.
<KOMV_UI>-KPOSN = 1.
<KOMV_UI>-STUNR = 1.
<KOMV_UI>-ZAEHK = 1.
<KOMV_UI>-KAPPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMV_UI-KSCHL, sy-vline,
  WA_KOMV_UI-KDATU, sy-vline,
  WA_KOMV_UI-KRECH, sy-vline,
  WA_KOMV_UI-KAWRT, sy-vline,
  WA_KOMV_UI-AWEI1, sy-vline,
  WA_KOMV_UI-KBETR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMV_UI 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_KOMV_UI 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_KOMV_UI INTO WA_KOMV_UI.


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

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-SAKN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-SAKN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-SAKN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-SAKN2.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-KONMS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEI1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMV_UI-KMEI1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMV_UI-KMEI1.
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_KOMV_UI_STR, 
KNUMV TYPE STRING,
KPOSN TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
KDATU TYPE STRING,
KRECH TYPE STRING,
KAWRT TYPE STRING,
AWEI1 TYPE STRING,
KBETR TYPE STRING,
KOEI1 TYPE STRING,
WAERS TYPE STRING,
KKURS TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
KNTYP TYPE STRING,
KSTAT TYPE STRING,
KNPRS TYPE STRING,
KRUEK TYPE STRING,
KRELI TYPE STRING,
KHERK TYPE STRING,
KGRPE TYPE STRING,
KOUPD TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
KVSL1 TYPE STRING,
SAKN1 TYPE STRING,
MWSK1 TYPE STRING,
KVSL2 TYPE STRING,
SAKN2 TYPE STRING,
MWSK2 TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
KDIFF TYPE STRING,
KWERT TYPE STRING,
KWERT_WAERK TYPE STRING,
KSTEU TYPE STRING,
KINAK TYPE STRING,
KOAID TYPE STRING,
KMXAW TYPE STRING,
KMXWR TYPE STRING,
KFAKTOR TYPE STRING,
KDUPL TYPE STRING,
KFAKTOR1 TYPE STRING,
KZBZG TYPE STRING,
KSTBS TYPE STRING,
STEIN TYPE STRING,
STEI1 TYPE STRING,
KONMS TYPE STRING,
KONWS TYPE STRING,
KAWRT_K TYPE STRING,
KWAEH TYPE STRING,
KWERT_K TYPE STRING,
KFKIV TYPE STRING,
KVARC TYPE STRING,
KMPRS TYPE STRING,
PRSQU TYPE STRING,
VARCOND TYPE STRING,
STUFE TYPE STRING,
WEGXX TYPE STRING,
KTREL TYPE STRING,
MDFLG TYPE STRING,
TXJLV TYPE STRING,
KBFLAG TYPE STRING,
KOFRM TYPE STRING,
STFKZ TYPE STRING,
KSTBM TYPE STRING,
KSTBM_NEXT TYPE STRING,
KZWIW TYPE STRING,
KOFRA TYPE STRING,
KOFRS TYPE STRING,
BOSTA TYPE STRING,
KSPAE TYPE STRING,
LOEVM_KO TYPE STRING,
KNUMA_BO TYPE STRING,
BERGL TYPE STRING,
BOSTA_CR TYPE STRING,
AWEIN TYPE STRING,
KOEIN TYPE STRING,
TXKRECH TYPE STRING,
TXKZBZG TYPE STRING,
TXKSTEU TYPE STRING,
TXKHERK TYPE STRING,
TXKNTYP TYPE STRING,
TXKINAK TYPE STRING,
TXKDUPL TYPE STRING,
MAKTX TYPE STRING,
LED_KINAK TYPE STRING,
VTEXT TYPE STRING,
KOA_TEXT TYPE STRING,
KIN_TEXT TYPE STRING,
BOSTA_TEXT TYPE STRING,
BOSTA_CR_TEXT TYPE STRING,
MEINS TYPE STRING,
RVKFAKTOR TYPE STRING,
RVKFAKTOR1 TYPE STRING,
KBETR_FLG TYPE STRING,
KMEI1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMV_UI_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_KOMV_UI_STR-KNUMV sy-vline 
WA_KOMV_UI_STR-KPOSN sy-vline 
WA_KOMV_UI_STR-STUNR sy-vline 
WA_KOMV_UI_STR-ZAEHK sy-vline 
WA_KOMV_UI_STR-KAPPL sy-vline 
WA_KOMV_UI_STR-KSCHL sy-vline 
WA_KOMV_UI_STR-KDATU sy-vline 
WA_KOMV_UI_STR-KRECH sy-vline 
WA_KOMV_UI_STR-KAWRT sy-vline 
WA_KOMV_UI_STR-AWEI1 sy-vline 
WA_KOMV_UI_STR-KBETR sy-vline 
WA_KOMV_UI_STR-KOEI1 sy-vline 
WA_KOMV_UI_STR-WAERS sy-vline 
WA_KOMV_UI_STR-KKURS sy-vline 
WA_KOMV_UI_STR-KPEIN sy-vline 
WA_KOMV_UI_STR-KMEIN sy-vline 
WA_KOMV_UI_STR-KUMZA sy-vline 
WA_KOMV_UI_STR-KUMNE sy-vline 
WA_KOMV_UI_STR-KNTYP sy-vline 
WA_KOMV_UI_STR-KSTAT sy-vline 
WA_KOMV_UI_STR-KNPRS sy-vline 
WA_KOMV_UI_STR-KRUEK sy-vline 
WA_KOMV_UI_STR-KRELI sy-vline 
WA_KOMV_UI_STR-KHERK sy-vline 
WA_KOMV_UI_STR-KGRPE sy-vline 
WA_KOMV_UI_STR-KOUPD sy-vline 
WA_KOMV_UI_STR-KNUMH sy-vline 
WA_KOMV_UI_STR-KOPOS sy-vline 
WA_KOMV_UI_STR-KVSL1 sy-vline 
WA_KOMV_UI_STR-SAKN1 sy-vline 
WA_KOMV_UI_STR-MWSK1 sy-vline 
WA_KOMV_UI_STR-KVSL2 sy-vline 
WA_KOMV_UI_STR-SAKN2 sy-vline 
WA_KOMV_UI_STR-MWSK2 sy-vline 
WA_KOMV_UI_STR-LIFNR sy-vline 
WA_KOMV_UI_STR-KUNNR sy-vline 
WA_KOMV_UI_STR-KDIFF sy-vline 
WA_KOMV_UI_STR-KWERT sy-vline 
WA_KOMV_UI_STR-KWERT_WAERK sy-vline 
WA_KOMV_UI_STR-KSTEU sy-vline 
WA_KOMV_UI_STR-KINAK sy-vline 
WA_KOMV_UI_STR-KOAID sy-vline 
WA_KOMV_UI_STR-KMXAW sy-vline 
WA_KOMV_UI_STR-KMXWR sy-vline 
WA_KOMV_UI_STR-KFAKTOR sy-vline 
WA_KOMV_UI_STR-KDUPL sy-vline 
WA_KOMV_UI_STR-KFAKTOR1 sy-vline 
WA_KOMV_UI_STR-KZBZG sy-vline 
WA_KOMV_UI_STR-KSTBS sy-vline 
WA_KOMV_UI_STR-STEIN sy-vline 
WA_KOMV_UI_STR-STEI1 sy-vline 
WA_KOMV_UI_STR-KONMS sy-vline 
WA_KOMV_UI_STR-KONWS sy-vline 
WA_KOMV_UI_STR-KAWRT_K sy-vline 
WA_KOMV_UI_STR-KWAEH sy-vline 
WA_KOMV_UI_STR-KWERT_K sy-vline 
WA_KOMV_UI_STR-KFKIV sy-vline 
WA_KOMV_UI_STR-KVARC sy-vline 
WA_KOMV_UI_STR-KMPRS sy-vline 
WA_KOMV_UI_STR-PRSQU sy-vline 
WA_KOMV_UI_STR-VARCOND sy-vline 
WA_KOMV_UI_STR-STUFE sy-vline 
WA_KOMV_UI_STR-WEGXX sy-vline 
WA_KOMV_UI_STR-KTREL sy-vline 
WA_KOMV_UI_STR-MDFLG sy-vline 
WA_KOMV_UI_STR-TXJLV sy-vline 
WA_KOMV_UI_STR-KBFLAG sy-vline 
WA_KOMV_UI_STR-KOFRM sy-vline 
WA_KOMV_UI_STR-STFKZ sy-vline 
WA_KOMV_UI_STR-KSTBM sy-vline 
WA_KOMV_UI_STR-KSTBM_NEXT sy-vline 
WA_KOMV_UI_STR-KZWIW sy-vline 
WA_KOMV_UI_STR-KOFRA sy-vline 
WA_KOMV_UI_STR-KOFRS sy-vline 
WA_KOMV_UI_STR-BOSTA sy-vline 
WA_KOMV_UI_STR-KSPAE sy-vline 
WA_KOMV_UI_STR-LOEVM_KO sy-vline 
WA_KOMV_UI_STR-KNUMA_BO sy-vline 
WA_KOMV_UI_STR-BERGL sy-vline 
WA_KOMV_UI_STR-BOSTA_CR sy-vline 
WA_KOMV_UI_STR-AWEIN sy-vline 
WA_KOMV_UI_STR-KOEIN sy-vline 
WA_KOMV_UI_STR-TXKRECH sy-vline 
WA_KOMV_UI_STR-TXKZBZG sy-vline 
WA_KOMV_UI_STR-TXKSTEU sy-vline 
WA_KOMV_UI_STR-TXKHERK sy-vline 
WA_KOMV_UI_STR-TXKNTYP sy-vline 
WA_KOMV_UI_STR-TXKINAK sy-vline 
WA_KOMV_UI_STR-TXKDUPL sy-vline 
WA_KOMV_UI_STR-MAKTX sy-vline 
WA_KOMV_UI_STR-LED_KINAK sy-vline 
WA_KOMV_UI_STR-VTEXT sy-vline 
WA_KOMV_UI_STR-KOA_TEXT sy-vline 
WA_KOMV_UI_STR-KIN_TEXT sy-vline 
WA_KOMV_UI_STR-BOSTA_TEXT sy-vline 
WA_KOMV_UI_STR-BOSTA_CR_TEXT sy-vline 
WA_KOMV_UI_STR-MEINS sy-vline 
WA_KOMV_UI_STR-RVKFAKTOR sy-vline 
WA_KOMV_UI_STR-RVKFAKTOR1 sy-vline 
WA_KOMV_UI_STR-KBETR_FLG sy-vline 
WA_KOMV_UI_STR-KMEI1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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