ABAP Select data from SAP table FKKRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKRACT
*  INTO TABLE @DATA(IT_FKKRACT2).
*--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_FKKRACT INDEX 1 INTO DATA(WA_FKKRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKRACT>-VALID = 1.
<FKKRACT>-GPART = 1.
<FKKRACT>-VKONT = 1.
<FKKRACT>-OPBUK = 1.
<FKKRACT>-RLGRD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKRACT-RLANZ, sy-vline,
  WA_FKKRACT-BONIT, sy-vline,
  WA_FKKRACT-TOGRU, sy-vline,
  WA_FKKRACT-XGEBV, sy-vline,
  WA_FKKRACT-XGEBS, sy-vline,
  WA_FKKRACT-XBVBL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKRACT 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_FKKRACT 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_FKKRACT INTO WA_FKKRACT.


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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKRACT-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKRACT-VKONT.
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_FKKRACT_STR, 
VALID TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
OPBUK TYPE STRING,
RLGRD TYPE STRING,
RLANZ TYPE STRING,
BONIT TYPE STRING,
TOGRU TYPE STRING,
XGEBV TYPE STRING,
XGEBS TYPE STRING,
XBVBL TYPE STRING,
STUNT TYPE STRING,
STUDT TYPE STRING,
MSPOP TYPE STRING,
MSPOP_DAYS TYPE STRING,
PSPOP TYPE STRING,
PSPOP_DAYS TYPE STRING,
MSPKO TYPE STRING,
MSPKO_DAYS TYPE STRING,
EZSKO TYPE STRING,
EZSKO_DAYS TYPE STRING,
AZSKO TYPE STRING,
AZSKO_DAYS TYPE STRING,
EZAWE TYPE STRING,
GEBST TYPE STRING,
MACHG TYPE STRING,
BSNTE TYPE STRING,
BCORR TYPE STRING,
XDELEZAWE TYPE STRING,
XDELAZAWE TYPE STRING,
EZVTG TYPE STRING,
EZVTG_DAYS TYPE STRING,
AZVTG TYPE STRING,
AZVTG_DAYS TYPE STRING,
MSVTG TYPE STRING,
MSVTG_DAYS TYPE STRING,
XDELPZAWE TYPE STRING,
XCORPZAWE TYPE STRING,
XNEWBV TYPE STRING,
XRLGRD TYPE STRING,
INFCON TYPE STRING,
XPPRV TYPE STRING,
XCHPP TYPE STRING,
DELMANDUSE TYPE STRING,
NEWMANDSTAT TYPE STRING,
LOCKIBAN_DAYS TYPE STRING,
XSTOR_RANF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKRACT_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_FKKRACT_STR-VALID sy-vline 
WA_FKKRACT_STR-GPART sy-vline 
WA_FKKRACT_STR-VKONT sy-vline 
WA_FKKRACT_STR-OPBUK sy-vline 
WA_FKKRACT_STR-RLGRD sy-vline 
WA_FKKRACT_STR-RLANZ sy-vline 
WA_FKKRACT_STR-BONIT sy-vline 
WA_FKKRACT_STR-TOGRU sy-vline 
WA_FKKRACT_STR-XGEBV sy-vline 
WA_FKKRACT_STR-XGEBS sy-vline 
WA_FKKRACT_STR-XBVBL sy-vline 
WA_FKKRACT_STR-STUNT sy-vline 
WA_FKKRACT_STR-STUDT sy-vline 
WA_FKKRACT_STR-MSPOP sy-vline 
WA_FKKRACT_STR-MSPOP_DAYS sy-vline 
WA_FKKRACT_STR-PSPOP sy-vline 
WA_FKKRACT_STR-PSPOP_DAYS sy-vline 
WA_FKKRACT_STR-MSPKO sy-vline 
WA_FKKRACT_STR-MSPKO_DAYS sy-vline 
WA_FKKRACT_STR-EZSKO sy-vline 
WA_FKKRACT_STR-EZSKO_DAYS sy-vline 
WA_FKKRACT_STR-AZSKO sy-vline 
WA_FKKRACT_STR-AZSKO_DAYS sy-vline 
WA_FKKRACT_STR-EZAWE sy-vline 
WA_FKKRACT_STR-GEBST sy-vline 
WA_FKKRACT_STR-MACHG sy-vline 
WA_FKKRACT_STR-BSNTE sy-vline 
WA_FKKRACT_STR-BCORR sy-vline 
WA_FKKRACT_STR-XDELEZAWE sy-vline 
WA_FKKRACT_STR-XDELAZAWE sy-vline 
WA_FKKRACT_STR-EZVTG sy-vline 
WA_FKKRACT_STR-EZVTG_DAYS sy-vline 
WA_FKKRACT_STR-AZVTG sy-vline 
WA_FKKRACT_STR-AZVTG_DAYS sy-vline 
WA_FKKRACT_STR-MSVTG sy-vline 
WA_FKKRACT_STR-MSVTG_DAYS sy-vline 
WA_FKKRACT_STR-XDELPZAWE sy-vline 
WA_FKKRACT_STR-XCORPZAWE sy-vline 
WA_FKKRACT_STR-XNEWBV sy-vline 
WA_FKKRACT_STR-XRLGRD sy-vline 
WA_FKKRACT_STR-INFCON sy-vline 
WA_FKKRACT_STR-XPPRV sy-vline 
WA_FKKRACT_STR-XCHPP sy-vline 
WA_FKKRACT_STR-DELMANDUSE sy-vline 
WA_FKKRACT_STR-NEWMANDSTAT sy-vline 
WA_FKKRACT_STR-LOCKIBAN_DAYS sy-vline 
WA_FKKRACT_STR-XSTOR_RANF sy-vline      INTO ld_text SEPARATED BY SPACE.

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