ABAP Select data from SAP table FKKRH_ACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKRH_ACT
*  INTO TABLE @DATA(IT_FKKRH_ACT2).
*--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_FKKRH_ACT INDEX 1 INTO DATA(WA_FKKRH_ACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKRH_ACT>-RLANZ = 1.
<FKKRH_ACT>-BONIT = 1.
<FKKRH_ACT>-TOGRU = 1.
<FKKRH_ACT>-XGEBV = 1.
<FKKRH_ACT>-XGEBS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKRH_ACT-XEZSP, sy-vline,
  WA_FKKRH_ACT-XEZSB, sy-vline,
  WA_FKKRH_ACT-XBVBL, sy-vline,
  WA_FKKRH_ACT-STUNT, sy-vline,
  WA_FKKRH_ACT-STUDT, sy-vline,
  WA_FKKRH_ACT-MSPOP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKRH_ACT 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_FKKRH_ACT 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_FKKRH_ACT INTO WA_FKKRH_ACT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKKRH_ACT_STR, 
RLANZ TYPE STRING,
BONIT TYPE STRING,
TOGRU TYPE STRING,
XGEBV TYPE STRING,
XGEBS TYPE STRING,
XEZSP TYPE STRING,
XEZSB 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,
XDELEZAWE TYPE STRING,
XDELAZAWE TYPE STRING,
MACHG TYPE STRING,
BSNTE TYPE STRING,
BCORR 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,
VERSN TYPE STRING,
INFCON TYPE STRING,
XSTOR_RANF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKRH_ACT_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_FKKRH_ACT_STR-RLANZ sy-vline 
WA_FKKRH_ACT_STR-BONIT sy-vline 
WA_FKKRH_ACT_STR-TOGRU sy-vline 
WA_FKKRH_ACT_STR-XGEBV sy-vline 
WA_FKKRH_ACT_STR-XGEBS sy-vline 
WA_FKKRH_ACT_STR-XEZSP sy-vline 
WA_FKKRH_ACT_STR-XEZSB sy-vline 
WA_FKKRH_ACT_STR-XBVBL sy-vline 
WA_FKKRH_ACT_STR-STUNT sy-vline 
WA_FKKRH_ACT_STR-STUDT sy-vline 
WA_FKKRH_ACT_STR-MSPOP sy-vline 
WA_FKKRH_ACT_STR-MSPOP_DAYS sy-vline 
WA_FKKRH_ACT_STR-PSPOP sy-vline 
WA_FKKRH_ACT_STR-PSPOP_DAYS sy-vline 
WA_FKKRH_ACT_STR-MSPKO sy-vline 
WA_FKKRH_ACT_STR-MSPKO_DAYS sy-vline 
WA_FKKRH_ACT_STR-EZSKO sy-vline 
WA_FKKRH_ACT_STR-EZSKO_DAYS sy-vline 
WA_FKKRH_ACT_STR-AZSKO sy-vline 
WA_FKKRH_ACT_STR-AZSKO_DAYS sy-vline 
WA_FKKRH_ACT_STR-EZAWE sy-vline 
WA_FKKRH_ACT_STR-GEBST sy-vline 
WA_FKKRH_ACT_STR-XDELEZAWE sy-vline 
WA_FKKRH_ACT_STR-XDELAZAWE sy-vline 
WA_FKKRH_ACT_STR-MACHG sy-vline 
WA_FKKRH_ACT_STR-BSNTE sy-vline 
WA_FKKRH_ACT_STR-BCORR sy-vline 
WA_FKKRH_ACT_STR-EZVTG sy-vline 
WA_FKKRH_ACT_STR-EZVTG_DAYS sy-vline 
WA_FKKRH_ACT_STR-AZVTG sy-vline 
WA_FKKRH_ACT_STR-AZVTG_DAYS sy-vline 
WA_FKKRH_ACT_STR-MSVTG sy-vline 
WA_FKKRH_ACT_STR-MSVTG_DAYS sy-vline 
WA_FKKRH_ACT_STR-XDELPZAWE sy-vline 
WA_FKKRH_ACT_STR-XCORPZAWE sy-vline 
WA_FKKRH_ACT_STR-VERSN sy-vline 
WA_FKKRH_ACT_STR-INFCON sy-vline 
WA_FKKRH_ACT_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.