ABAP Select data from SAP table FKKCMK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKCMK
*  INTO TABLE @DATA(IT_FKKCMK2).
*--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_FKKCMK INDEX 1 INTO DATA(WA_FKKCMK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKCMK>-MANDT = 1.
<FKKCMK>-KEYS1 = 1.
<FKKCMK>-KEYS2 = 1.
<FKKCMK>-BUKRS = 1.
<FKKCMK>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKCMK-HERKF, sy-vline,
  WA_FKKCMK-HBKID, sy-vline,
  WA_FKKCMK-HKTID, sy-vline,
  WA_FKKCMK-PYMET, sy-vline,
  WA_FKKCMK-BVRKO, sy-vline,
  WA_FKKCMK-VALUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKCMK 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_FKKCMK 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_FKKCMK INTO WA_FKKCMK.


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

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

*Conversion exit ALPHA, internal->external for field CHKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCMK-CHKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCMK-CHKTO.
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_FKKCMK_STR, 
MANDT TYPE STRING,
KEYS1 TYPE STRING,
KEYS2 TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
HERKF TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
PYMET TYPE STRING,
BVRKO TYPE STRING,
VALUT TYPE STRING,
APPLK TYPE STRING,
BLART TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
WAERS TYPE STRING,
FIKEY TYPE STRING,
STASS TYPE STRING,
ANZPO TYPE STRING,
SUMMH TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
CHKFR TYPE STRING,
CHKTO TYPE STRING,
INFOF TYPE STRING,
KTSUH TYPE STRING,
KSUMP TYPE STRING,
XEXFG TYPE STRING,
XEXBG TYPE STRING,
STRDT TYPE STRING,
STRZT TYPE STRING,
XSTRF TYPE STRING,
BHOST TYPE STRING,
JNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKCMK_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_FKKCMK_STR-MANDT sy-vline 
WA_FKKCMK_STR-KEYS1 sy-vline 
WA_FKKCMK_STR-KEYS2 sy-vline 
WA_FKKCMK_STR-BUKRS sy-vline 
WA_FKKCMK_STR-GSBER sy-vline 
WA_FKKCMK_STR-HERKF sy-vline 
WA_FKKCMK_STR-HBKID sy-vline 
WA_FKKCMK_STR-HKTID sy-vline 
WA_FKKCMK_STR-PYMET sy-vline 
WA_FKKCMK_STR-BVRKO sy-vline 
WA_FKKCMK_STR-VALUT sy-vline 
WA_FKKCMK_STR-APPLK sy-vline 
WA_FKKCMK_STR-BLART sy-vline 
WA_FKKCMK_STR-BUDAT sy-vline 
WA_FKKCMK_STR-BLDAT sy-vline 
WA_FKKCMK_STR-WAERS sy-vline 
WA_FKKCMK_STR-FIKEY sy-vline 
WA_FKKCMK_STR-STASS sy-vline 
WA_FKKCMK_STR-ANZPO sy-vline 
WA_FKKCMK_STR-SUMMH sy-vline 
WA_FKKCMK_STR-ERNAM sy-vline 
WA_FKKCMK_STR-ERDAT sy-vline 
WA_FKKCMK_STR-ERTIM sy-vline 
WA_FKKCMK_STR-AENAM sy-vline 
WA_FKKCMK_STR-AEDAT sy-vline 
WA_FKKCMK_STR-AETIM sy-vline 
WA_FKKCMK_STR-CHKFR sy-vline 
WA_FKKCMK_STR-CHKTO sy-vline 
WA_FKKCMK_STR-INFOF sy-vline 
WA_FKKCMK_STR-KTSUH sy-vline 
WA_FKKCMK_STR-KSUMP sy-vline 
WA_FKKCMK_STR-XEXFG sy-vline 
WA_FKKCMK_STR-XEXBG sy-vline 
WA_FKKCMK_STR-STRDT sy-vline 
WA_FKKCMK_STR-STRZT sy-vline 
WA_FKKCMK_STR-XSTRF sy-vline 
WA_FKKCMK_STR-BHOST sy-vline 
WA_FKKCMK_STR-JNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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