ABAP Select data from SAP table KOMLFPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLFPD
*  INTO TABLE @DATA(IT_KOMLFPD2).
*--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_KOMLFPD INDEX 1 INTO DATA(WA_KOMLFPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLFPD>-REF_NUMBER = 1.
<KOMLFPD>-REF_NUMBER_2 = 1.
<KOMLFPD>-WFKM1 = 1.
<KOMLFPD>-FPRM1 = 1.
<KOMLFPD>-MWSKZ_PR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLFPD-PNETWR, sy-vline,
  WA_KOMLFPD-PBRTWR, sy-vline,
  WA_KOMLFPD-PMWSBP, sy-vline,
  WA_KOMLFPD-DMWSBP, sy-vline,
  WA_KOMLFPD-KSTEU, sy-vline,
  WA_KOMLFPD-PRSOK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLFPD 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_KOMLFPD 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_KOMLFPD INTO WA_KOMLFPD.


*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 CUNIT, internal->external for field WFKM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPD-WFKM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPD-WFKM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FPRM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPD-FPRM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPD-FPRM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPD-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPD-EAN11.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPD-REF_SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPD-REF_SAKTO.
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_KOMLFPD_STR, 
REF_NUMBER TYPE STRING,
REF_NUMBER_2 TYPE STRING,
WFKM1 TYPE STRING,
FPRM1 TYPE STRING,
MWSKZ_PR TYPE STRING,
PNETWR TYPE STRING,
PBRTWR TYPE STRING,
PMWSBP TYPE STRING,
DMWSBP TYPE STRING,
KSTEU TYPE STRING,
PRSOK TYPE STRING,
UVPRSD TYPE STRING,
FXMSGD TYPE STRING,
NETZU TYPE STRING,
UVPRS TYPE STRING,
FXMSG TYPE STRING,
WARENWERT TYPE STRING,
TAX TYPE STRING,
VWERT TYPE STRING,
VWERR TYPE STRING,
VWALT TYPE STRING,
BKLAS TYPE STRING,
KOL_NAME1 TYPE STRING,
BEZEI_KOLIF TYPE STRING,
KZBTR TYPE STRING,
VOLUM_LF TYPE STRING,
NTGEW_LF TYPE STRING,
BRGEW_LF TYPE STRING,
COND_PARTY TYPE STRING,
WAART TYPE STRING,
TAX_BASE_MM TYPE STRING,
TAX_BASE_SD TYPE STRING,
TAX_FROM_COND_MM TYPE STRING,
TAX_FROM_COND_SD TYPE STRING,
EAN11 TYPE STRING,
DMBTR_IM TYPE STRING,
DMBTR_PR TYPE STRING,
DMBTR_UM TYPE STRING,
WAERL TYPE STRING,
HWAER TYPE STRING,
DMBTR_IM_UM TYPE STRING,
WERKS_NAME TYPE STRING,
CONF_UPD TYPE STRING,
ADOPT_PRICING_K TYPE STRING,
ADOPT_PRICING_D TYPE STRING,
CM_STATUS_RESET_SBIV TYPE STRING,
CM_STATUS_RESET_SBIC TYPE STRING,
NO_INCOTERM_DETERMINATION TYPE STRING,
PRED_NUMBER TYPE STRING,
PRED_ITEM_NUMBER TYPE STRING,
PRED_DOC_TYPE TYPE STRING,
LFTYPV_STD TYPE STRING,
REFTYP_SOA TYPE STRING,
ITEM_ACC_RELEVANCE_IND TYPE STRING,
ITEM_RETURNS_IND TYPE STRING,
DEFERRED_IND TYPE STRING,
TAX_CATEGORY_CODE TYPE STRING,
REPLACEMENT_ACTIVE_PARTNER TYPE STRING,
REF_PAOBJNR TYPE STRING,
REF_SAKTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLFPD_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_KOMLFPD_STR-REF_NUMBER sy-vline 
WA_KOMLFPD_STR-REF_NUMBER_2 sy-vline 
WA_KOMLFPD_STR-WFKM1 sy-vline 
WA_KOMLFPD_STR-FPRM1 sy-vline 
WA_KOMLFPD_STR-MWSKZ_PR sy-vline 
WA_KOMLFPD_STR-PNETWR sy-vline 
WA_KOMLFPD_STR-PBRTWR sy-vline 
WA_KOMLFPD_STR-PMWSBP sy-vline 
WA_KOMLFPD_STR-DMWSBP sy-vline 
WA_KOMLFPD_STR-KSTEU sy-vline 
WA_KOMLFPD_STR-PRSOK sy-vline 
WA_KOMLFPD_STR-UVPRSD sy-vline 
WA_KOMLFPD_STR-FXMSGD sy-vline 
WA_KOMLFPD_STR-NETZU sy-vline 
WA_KOMLFPD_STR-UVPRS sy-vline 
WA_KOMLFPD_STR-FXMSG sy-vline 
WA_KOMLFPD_STR-WARENWERT sy-vline 
WA_KOMLFPD_STR-TAX sy-vline 
WA_KOMLFPD_STR-VWERT sy-vline 
WA_KOMLFPD_STR-VWERR sy-vline 
WA_KOMLFPD_STR-VWALT sy-vline 
WA_KOMLFPD_STR-BKLAS sy-vline 
WA_KOMLFPD_STR-KOL_NAME1 sy-vline 
WA_KOMLFPD_STR-BEZEI_KOLIF sy-vline 
WA_KOMLFPD_STR-KZBTR sy-vline 
WA_KOMLFPD_STR-VOLUM_LF sy-vline 
WA_KOMLFPD_STR-NTGEW_LF sy-vline 
WA_KOMLFPD_STR-BRGEW_LF sy-vline 
WA_KOMLFPD_STR-COND_PARTY sy-vline 
WA_KOMLFPD_STR-WAART sy-vline 
WA_KOMLFPD_STR-TAX_BASE_MM sy-vline 
WA_KOMLFPD_STR-TAX_BASE_SD sy-vline 
WA_KOMLFPD_STR-TAX_FROM_COND_MM sy-vline 
WA_KOMLFPD_STR-TAX_FROM_COND_SD sy-vline 
WA_KOMLFPD_STR-EAN11 sy-vline 
WA_KOMLFPD_STR-DMBTR_IM sy-vline 
WA_KOMLFPD_STR-DMBTR_PR sy-vline 
WA_KOMLFPD_STR-DMBTR_UM sy-vline 
WA_KOMLFPD_STR-WAERL sy-vline 
WA_KOMLFPD_STR-HWAER sy-vline 
WA_KOMLFPD_STR-DMBTR_IM_UM sy-vline 
WA_KOMLFPD_STR-WERKS_NAME sy-vline 
WA_KOMLFPD_STR-CONF_UPD sy-vline 
WA_KOMLFPD_STR-ADOPT_PRICING_K sy-vline 
WA_KOMLFPD_STR-ADOPT_PRICING_D sy-vline 
WA_KOMLFPD_STR-CM_STATUS_RESET_SBIV sy-vline 
WA_KOMLFPD_STR-CM_STATUS_RESET_SBIC sy-vline 
WA_KOMLFPD_STR-NO_INCOTERM_DETERMINATION sy-vline 
WA_KOMLFPD_STR-PRED_NUMBER sy-vline 
WA_KOMLFPD_STR-PRED_ITEM_NUMBER sy-vline 
WA_KOMLFPD_STR-PRED_DOC_TYPE sy-vline 
WA_KOMLFPD_STR-LFTYPV_STD sy-vline 
WA_KOMLFPD_STR-REFTYP_SOA sy-vline 
WA_KOMLFPD_STR-ITEM_ACC_RELEVANCE_IND sy-vline 
WA_KOMLFPD_STR-ITEM_RETURNS_IND sy-vline 
WA_KOMLFPD_STR-DEFERRED_IND sy-vline 
WA_KOMLFPD_STR-TAX_CATEGORY_CODE sy-vline 
WA_KOMLFPD_STR-REPLACEMENT_ACTIVE_PARTNER sy-vline 
WA_KOMLFPD_STR-REF_PAOBJNR sy-vline 
WA_KOMLFPD_STR-REF_SAKTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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