ABAP Select data from SAP table KOMFKZM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMFKZM
*  INTO TABLE @DATA(IT_KOMFKZM2).
*--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_KOMFKZM INDEX 1 INTO DATA(WA_KOMFKZM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMFKZM>-MANDT = 1.
<KOMFKZM>-TYPZM = 1.
<KOMFKZM>-CCINS = 1.
<KOMFKZM>-CCNUM = 1.
<KOMFKZM>-CCFOL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMFKZM-DATAB, sy-vline,
  WA_KOMFKZM-DATBI, sy-vline,
  WA_KOMFKZM-CCNAME, sy-vline,
  WA_KOMFKZM-AUTWR, sy-vline,
  WA_KOMFKZM-CCWAE, sy-vline,
  WA_KOMFKZM-AUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMFKZM 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_KOMFKZM 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_KOMFKZM INTO WA_KOMFKZM.


*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 CCACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMFKZM-CCACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMFKZM-CCACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMFKZM-VGBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMFKZM-VGBEL.
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_KOMFKZM_STR, 
MANDT TYPE STRING,
TYPZM TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCFOL TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
CCNAME TYPE STRING,
AUTWR TYPE STRING,
CCWAE TYPE STRING,
AUDAT TYPE STRING,
AUTIM TYPE STRING,
MERCH TYPE STRING,
TRMID TYPE STRING,
FAKWR TYPE STRING,
CCBEG TYPE STRING,
AUNUM TYPE STRING,
FKSAF TYPE STRING,
CSOUR TYPE STRING,
SETTL TYPE STRING,
AUTRA TYPE STRING,
LOCID TYPE STRING,
REACT TYPE STRING,
FLGAU TYPE STRING,
FPLNR_AK TYPE STRING,
FPLTR_AK TYPE STRING,
AUTWV TYPE STRING,
CCACT TYPE STRING,
CCALL TYPE STRING,
CCPRE TYPE STRING,
CCVAL TYPE STRING,
CVVAL TYPE STRING,
CVVCT TYPE STRING,
CVVST TYPE STRING,
CCAUA TYPE STRING,
RCAVR TYPE STRING,
RCAVA TYPE STRING,
RCAVZ TYPE STRING,
RCRSP TYPE STRING,
RTEXT TYPE STRING,
VGBEL TYPE STRING,
DUMMY TYPE STRING,
UPDKZ TYPE STRING,
VCARD TYPE STRING,
RFCAUT TYPE STRING,
FNAUT_SETINIT TYPE STRING,
FNAUT_SETINFO TYPE STRING,
DP_TOKEN TYPE STRING,
DP_PSP TYPE STRING,
DP_PAYID TYPE STRING,
DP_PSP_TRANSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMFKZM_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_KOMFKZM_STR-MANDT sy-vline 
WA_KOMFKZM_STR-TYPZM sy-vline 
WA_KOMFKZM_STR-CCINS sy-vline 
WA_KOMFKZM_STR-CCNUM sy-vline 
WA_KOMFKZM_STR-CCFOL sy-vline 
WA_KOMFKZM_STR-DATAB sy-vline 
WA_KOMFKZM_STR-DATBI sy-vline 
WA_KOMFKZM_STR-CCNAME sy-vline 
WA_KOMFKZM_STR-AUTWR sy-vline 
WA_KOMFKZM_STR-CCWAE sy-vline 
WA_KOMFKZM_STR-AUDAT sy-vline 
WA_KOMFKZM_STR-AUTIM sy-vline 
WA_KOMFKZM_STR-MERCH sy-vline 
WA_KOMFKZM_STR-TRMID sy-vline 
WA_KOMFKZM_STR-FAKWR sy-vline 
WA_KOMFKZM_STR-CCBEG sy-vline 
WA_KOMFKZM_STR-AUNUM sy-vline 
WA_KOMFKZM_STR-FKSAF sy-vline 
WA_KOMFKZM_STR-CSOUR sy-vline 
WA_KOMFKZM_STR-SETTL sy-vline 
WA_KOMFKZM_STR-AUTRA sy-vline 
WA_KOMFKZM_STR-LOCID sy-vline 
WA_KOMFKZM_STR-REACT sy-vline 
WA_KOMFKZM_STR-FLGAU sy-vline 
WA_KOMFKZM_STR-FPLNR_AK sy-vline 
WA_KOMFKZM_STR-FPLTR_AK sy-vline 
WA_KOMFKZM_STR-AUTWV sy-vline 
WA_KOMFKZM_STR-CCACT sy-vline 
WA_KOMFKZM_STR-CCALL sy-vline 
WA_KOMFKZM_STR-CCPRE sy-vline 
WA_KOMFKZM_STR-CCVAL sy-vline 
WA_KOMFKZM_STR-CVVAL sy-vline 
WA_KOMFKZM_STR-CVVCT sy-vline 
WA_KOMFKZM_STR-CVVST sy-vline 
WA_KOMFKZM_STR-CCAUA sy-vline 
WA_KOMFKZM_STR-RCAVR sy-vline 
WA_KOMFKZM_STR-RCAVA sy-vline 
WA_KOMFKZM_STR-RCAVZ sy-vline 
WA_KOMFKZM_STR-RCRSP sy-vline 
WA_KOMFKZM_STR-RTEXT sy-vline 
WA_KOMFKZM_STR-VGBEL sy-vline 
WA_KOMFKZM_STR-DUMMY sy-vline 
WA_KOMFKZM_STR-UPDKZ sy-vline 
WA_KOMFKZM_STR-VCARD sy-vline 
WA_KOMFKZM_STR-RFCAUT sy-vline 
WA_KOMFKZM_STR-FNAUT_SETINIT sy-vline 
WA_KOMFKZM_STR-FNAUT_SETINFO sy-vline 
WA_KOMFKZM_STR-DP_TOKEN sy-vline 
WA_KOMFKZM_STR-DP_PSP sy-vline 
WA_KOMFKZM_STR-DP_PAYID sy-vline 
WA_KOMFKZM_STR-DP_PSP_TRANSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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