ABAP Select data from SAP table RFKKCJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKKCJ
*  INTO TABLE @DATA(IT_RFKKCJ2).
*--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_RFKKCJ INDEX 1 INTO DATA(WA_RFKKCJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKKCJ>-MANDT = 1.
<RFKKCJ>-APPLK = 1.
<RFKKCJ>-OFFIC = 1.
<RFKKCJ>-CHDSK = 1.
<RFKKCJ>-SEQNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKKCJ-WAERS, sy-vline,
  WA_RFKKCJ-PAYTP, sy-vline,
  WA_RFKKCJ-PRCTP, sy-vline,
  WA_RFKKCJ-PRKEY, sy-vline,
  WA_RFKKCJ-ERNAM, sy-vline,
  WA_RFKKCJ-CPUDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKKCJ 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_RFKKCJ 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_RFKKCJ INTO WA_RFKKCJ.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VKOCH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKKCJ-VKOCH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKKCJ-VKOCH.
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_RFKKCJ_STR, 
MANDT TYPE STRING,
APPLK TYPE STRING,
OFFIC TYPE STRING,
CHDSK TYPE STRING,
SEQNO TYPE STRING,
WAERS TYPE STRING,
PAYTP TYPE STRING,
PRCTP TYPE STRING,
PRKEY TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
CDVKO TYPE STRING,
HKONT TYPE STRING,
OFTXT TYPE STRING,
CHTXT TYPE STRING,
BETRW TYPE STRING,
EINKO TYPE STRING,
ENTKO TYPE STRING,
BUKRS TYPE STRING,
NAMEW TYPE STRING,
GIVNM TYPE STRING,
AMPEL TYPE STRING,
KEYZ1 TYPE STRING,
BVRKO TYPE STRING,
TKNGS TYPE STRING,
FSZT TYPE STRING,
STORB TYPE STRING,
CCINS TYPE STRING,
XRDPST TYPE STRING,
OPBEL TYPE STRING,
VKOCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKKCJ_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_RFKKCJ_STR-MANDT sy-vline 
WA_RFKKCJ_STR-APPLK sy-vline 
WA_RFKKCJ_STR-OFFIC sy-vline 
WA_RFKKCJ_STR-CHDSK sy-vline 
WA_RFKKCJ_STR-SEQNO sy-vline 
WA_RFKKCJ_STR-WAERS sy-vline 
WA_RFKKCJ_STR-PAYTP sy-vline 
WA_RFKKCJ_STR-PRCTP sy-vline 
WA_RFKKCJ_STR-PRKEY sy-vline 
WA_RFKKCJ_STR-ERNAM sy-vline 
WA_RFKKCJ_STR-CPUDT sy-vline 
WA_RFKKCJ_STR-CPUTM sy-vline 
WA_RFKKCJ_STR-CDVKO sy-vline 
WA_RFKKCJ_STR-HKONT sy-vline 
WA_RFKKCJ_STR-OFTXT sy-vline 
WA_RFKKCJ_STR-CHTXT sy-vline 
WA_RFKKCJ_STR-BETRW sy-vline 
WA_RFKKCJ_STR-EINKO sy-vline 
WA_RFKKCJ_STR-ENTKO sy-vline 
WA_RFKKCJ_STR-BUKRS sy-vline 
WA_RFKKCJ_STR-NAMEW sy-vline 
WA_RFKKCJ_STR-GIVNM sy-vline 
WA_RFKKCJ_STR-AMPEL sy-vline 
WA_RFKKCJ_STR-KEYZ1 sy-vline 
WA_RFKKCJ_STR-BVRKO sy-vline 
WA_RFKKCJ_STR-TKNGS sy-vline 
WA_RFKKCJ_STR-FSZT sy-vline 
WA_RFKKCJ_STR-STORB sy-vline 
WA_RFKKCJ_STR-CCINS sy-vline 
WA_RFKKCJ_STR-XRDPST sy-vline 
WA_RFKKCJ_STR-OPBEL sy-vline 
WA_RFKKCJ_STR-VKOCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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