ABAP Select data from SAP table RK23D_REPOST_DETAILS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK23D_REPOST_DETAILS 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 RK23D_REPOST_DETAILS. 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 RK23D_REPOST_DETAILS 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_RK23D_REPOST_DETAILS TYPE STANDARD TABLE OF RK23D_REPOST_DETAILS,
      WA_RK23D_REPOST_DETAILS TYPE RK23D_REPOST_DETAILS,
      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: <RK23D_REPOST_DETAILS> TYPE RK23D_REPOST_DETAILS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK23D_REPOST_DETAILS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK23D_REPOST_DETAILS
  INTO TABLE IT_RK23D_REPOST_DETAILS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK23D_REPOST_DETAILS
*  INTO TABLE @DATA(IT_RK23D_REPOST_DETAILS2).
*--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_RK23D_REPOST_DETAILS INDEX 1 INTO DATA(WA_RK23D_REPOST_DETAILS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK23D_REPOST_DETAILS ASSIGNING <RK23D_REPOST_DETAILS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK23D_REPOST_DETAILS>-COUNTER = 1.
<RK23D_REPOST_DETAILS>-WTGBTR = 1.
<RK23D_REPOST_DETAILS>-TWAER = 1.
<RK23D_REPOST_DETAILS>-LSTBTR = 1.
<RK23D_REPOST_DETAILS>-MEINB = 1.

ENDLOOP.

LOOP AT IT_RK23D_REPOST_DETAILS INTO WA_RK23D_REPOST_DETAILS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK23D_REPOST_DETAILS-SGTXT, sy-vline,
  WA_RK23D_REPOST_DETAILS-KSTAR, sy-vline,
  WA_RK23D_REPOST_DETAILS-KOSTL, sy-vline,
  WA_RK23D_REPOST_DETAILS-LSTAR, sy-vline,
  WA_RK23D_REPOST_DETAILS-AUFNR, sy-vline,
  WA_RK23D_REPOST_DETAILS-AFPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK23D_REPOST_DETAILS 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_RK23D_REPOST_DETAILS 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_RK23D_REPOST_DETAILS INTO WA_RK23D_REPOST_DETAILS.


*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 AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-MEINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-MEINB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-SERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-SERVICE_DOC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23D_REPOST_DETAILS-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23D_REPOST_DETAILS-GRANT_NBR.
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_RK23D_REPOST_DETAILS_STR, 
COUNTER TYPE STRING,
WTGBTR TYPE STRING,
TWAER TYPE STRING,
LSTBTR TYPE STRING,
MEINB TYPE STRING,
SGTXT TYPE STRING,
KSTAR TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
AUFNR TYPE STRING,
AFPOS TYPE STRING,
PS_PSP_PNR TYPE STRING,
KSTRG TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
IMKEY TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PAOBJNR TYPE STRING,
PRZNR TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
FKBER TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
RECID TYPE STRING,
BEMOT TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK23D_REPOST_DETAILS_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_RK23D_REPOST_DETAILS_STR-COUNTER sy-vline 
WA_RK23D_REPOST_DETAILS_STR-WTGBTR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-TWAER sy-vline 
WA_RK23D_REPOST_DETAILS_STR-LSTBTR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-MEINB sy-vline 
WA_RK23D_REPOST_DETAILS_STR-SGTXT sy-vline 
WA_RK23D_REPOST_DETAILS_STR-KSTAR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-KOSTL sy-vline 
WA_RK23D_REPOST_DETAILS_STR-LSTAR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-AUFNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-AFPOS sy-vline 
WA_RK23D_REPOST_DETAILS_STR-PS_PSP_PNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-KSTRG sy-vline 
WA_RK23D_REPOST_DETAILS_STR-NPLNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-VORNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-IMKEY sy-vline 
WA_RK23D_REPOST_DETAILS_STR-KDAUF sy-vline 
WA_RK23D_REPOST_DETAILS_STR-KDPOS sy-vline 
WA_RK23D_REPOST_DETAILS_STR-PAOBJNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-PRZNR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-SERVICE_DOC_TYPE sy-vline 
WA_RK23D_REPOST_DETAILS_STR-SERVICE_DOC_ID sy-vline 
WA_RK23D_REPOST_DETAILS_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_RK23D_REPOST_DETAILS_STR-FKBER sy-vline 
WA_RK23D_REPOST_DETAILS_STR-GEBER sy-vline 
WA_RK23D_REPOST_DETAILS_STR-GRANT_NBR sy-vline 
WA_RK23D_REPOST_DETAILS_STR-RECID sy-vline 
WA_RK23D_REPOST_DETAILS_STR-BEMOT sy-vline 
WA_RK23D_REPOST_DETAILS_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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