ABAP Select data from SAP table RK23F into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK23F 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 RK23F. 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 RK23F 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_RK23F TYPE STANDARD TABLE OF RK23F,
      WA_RK23F TYPE RK23F,
      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: <RK23F> TYPE RK23F.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK23F.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK23F
  INTO TABLE IT_RK23F.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK23F
*  INTO TABLE @DATA(IT_RK23F2).
*--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_RK23F INDEX 1 INTO DATA(WA_RK23F2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK23F ASSIGNING <RK23F>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK23F>-ZLENR = 1.
<RK23F>-SKOSTL = 1.
<RK23F>-SLSTAR = 1.
<RK23F>-SAUFNR = 1.
<RK23F>-SBEMOT = 1.

ENDLOOP.

LOOP AT IT_RK23F INTO WA_RK23F.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK23F-SPRZNR, sy-vline,
  WA_RK23F-SPSPNR, sy-vline,
  WA_RK23F-SKDAUF, sy-vline,
  WA_RK23F-SKDPOS, sy-vline,
  WA_RK23F-SKSTRG, sy-vline,
  WA_RK23F-SNPLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK23F 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_RK23F 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_RK23F INTO WA_RK23F.


*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 SKOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SKOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SAUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SAUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SPRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SPRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field SPSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SPSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SPSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SKDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SKDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SNPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SNPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SNPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field SVORGN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SVORGN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SVORGN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SRECIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SRECIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SRECIND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field SIMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SIMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SIMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SGRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SGRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SGRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field SVORNR_AUF
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SVORNR_AUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SVORNR_AUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SSERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-SSERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-SSERVICE_DOC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-MEINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-MEINB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC112, internal->external for field TARIF
CALL FUNCTION 'CONVERSION_EXIT_AC112_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-TARIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-TARIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUBEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-AUBEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-AUBEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-WTFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-WTFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-WKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EKOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EKOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EAUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EAUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EAUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EPRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EPRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EPRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field EPSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EPSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EPSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EKDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EKDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EKDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-ENPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-ENPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field EVORGN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EVORGN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EVORGN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EMATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERECIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-ERECIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-ERECIND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field EIMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EIMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EIMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EGRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EGRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EGRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field EVORNR_AUF
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-EVORNR_AUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-EVORNR_AUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ESERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK23F-ESERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK23F-ESERVICE_DOC_ID.
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_RK23F_STR, 
ZLENR TYPE STRING,
SKOSTL TYPE STRING,
SLSTAR TYPE STRING,
SAUFNR TYPE STRING,
SBEMOT TYPE STRING,
SPRZNR TYPE STRING,
SPSPNR TYPE STRING,
SKDAUF TYPE STRING,
SKDPOS TYPE STRING,
SKSTRG TYPE STRING,
SNPLNR TYPE STRING,
SVORGN TYPE STRING,
SRECIND TYPE STRING,
SPAOBJ TYPE STRING,
SIMKEY TYPE STRING,
SIMDABRBEZ TYPE STRING,
SGEBER TYPE STRING,
SFKBER TYPE STRING,
SGRANT_NBR TYPE STRING,
SBUDGET_PD TYPE STRING,
SVORNR_AUF TYPE STRING,
SSERVICE_DOC_TYPE TYPE STRING,
SSERVICE_DOC_ID TYPE STRING,
SSERVICE_DOC_ITEM_ID TYPE STRING,
KSTAR TYPE STRING,
STAGR TYPE STRING,
MBGBTR TYPE STRING,
MEINB TYPE STRING,
TARIF TYPE STRING,
WAERS TYPE STRING,
AUSBR TYPE STRING,
AUBEH TYPE STRING,
PERNR TYPE STRING,
SGTXT TYPE STRING,
WTGBTR TYPE STRING,
WTFBTR TYPE STRING,
WKGBTR TYPE STRING,
WKFBTR TYPE STRING,
EKOSTL TYPE STRING,
ELSTAR TYPE STRING,
EAUFNR TYPE STRING,
EBEMOT TYPE STRING,
EPRZNR TYPE STRING,
EPSPNR TYPE STRING,
EKDAUF TYPE STRING,
EKDPOS TYPE STRING,
EKSTRG TYPE STRING,
ENPLNR TYPE STRING,
EVORGN TYPE STRING,
EPROCNR TYPE STRING,
EMATNR TYPE STRING,
EWERKS TYPE STRING,
EVERID TYPE STRING,
ERECIND TYPE STRING,
EPAOBJ TYPE STRING,
EIMKEY TYPE STRING,
EIMDABRBEZ TYPE STRING,
EGEBER TYPE STRING,
EFKBER TYPE STRING,
EGRANT_NBR TYPE STRING,
EBUDGET_PD TYPE STRING,
CKML_ALPROC_TEXT TYPE STRING,
EVORNR_AUF TYPE STRING,
WORK_ITEM_ID TYPE STRING,
ESERVICE_DOC_TYPE TYPE STRING,
ESERVICE_DOC_ID TYPE STRING,
ESERVICE_DOC_ITEM_ID TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK23F_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_RK23F_STR-ZLENR sy-vline 
WA_RK23F_STR-SKOSTL sy-vline 
WA_RK23F_STR-SLSTAR sy-vline 
WA_RK23F_STR-SAUFNR sy-vline 
WA_RK23F_STR-SBEMOT sy-vline 
WA_RK23F_STR-SPRZNR sy-vline 
WA_RK23F_STR-SPSPNR sy-vline 
WA_RK23F_STR-SKDAUF sy-vline 
WA_RK23F_STR-SKDPOS sy-vline 
WA_RK23F_STR-SKSTRG sy-vline 
WA_RK23F_STR-SNPLNR sy-vline 
WA_RK23F_STR-SVORGN sy-vline 
WA_RK23F_STR-SRECIND sy-vline 
WA_RK23F_STR-SPAOBJ sy-vline 
WA_RK23F_STR-SIMKEY sy-vline 
WA_RK23F_STR-SIMDABRBEZ sy-vline 
WA_RK23F_STR-SGEBER sy-vline 
WA_RK23F_STR-SFKBER sy-vline 
WA_RK23F_STR-SGRANT_NBR sy-vline 
WA_RK23F_STR-SBUDGET_PD sy-vline 
WA_RK23F_STR-SVORNR_AUF sy-vline 
WA_RK23F_STR-SSERVICE_DOC_TYPE sy-vline 
WA_RK23F_STR-SSERVICE_DOC_ID sy-vline 
WA_RK23F_STR-SSERVICE_DOC_ITEM_ID sy-vline 
WA_RK23F_STR-KSTAR sy-vline 
WA_RK23F_STR-STAGR sy-vline 
WA_RK23F_STR-MBGBTR sy-vline 
WA_RK23F_STR-MEINB sy-vline 
WA_RK23F_STR-TARIF sy-vline 
WA_RK23F_STR-WAERS sy-vline 
WA_RK23F_STR-AUSBR sy-vline 
WA_RK23F_STR-AUBEH sy-vline 
WA_RK23F_STR-PERNR sy-vline 
WA_RK23F_STR-SGTXT sy-vline 
WA_RK23F_STR-WTGBTR sy-vline 
WA_RK23F_STR-WTFBTR sy-vline 
WA_RK23F_STR-WKGBTR sy-vline 
WA_RK23F_STR-WKFBTR sy-vline 
WA_RK23F_STR-EKOSTL sy-vline 
WA_RK23F_STR-ELSTAR sy-vline 
WA_RK23F_STR-EAUFNR sy-vline 
WA_RK23F_STR-EBEMOT sy-vline 
WA_RK23F_STR-EPRZNR sy-vline 
WA_RK23F_STR-EPSPNR sy-vline 
WA_RK23F_STR-EKDAUF sy-vline 
WA_RK23F_STR-EKDPOS sy-vline 
WA_RK23F_STR-EKSTRG sy-vline 
WA_RK23F_STR-ENPLNR sy-vline 
WA_RK23F_STR-EVORGN sy-vline 
WA_RK23F_STR-EPROCNR sy-vline 
WA_RK23F_STR-EMATNR sy-vline 
WA_RK23F_STR-EWERKS sy-vline 
WA_RK23F_STR-EVERID sy-vline 
WA_RK23F_STR-ERECIND sy-vline 
WA_RK23F_STR-EPAOBJ sy-vline 
WA_RK23F_STR-EIMKEY sy-vline 
WA_RK23F_STR-EIMDABRBEZ sy-vline 
WA_RK23F_STR-EGEBER sy-vline 
WA_RK23F_STR-EFKBER sy-vline 
WA_RK23F_STR-EGRANT_NBR sy-vline 
WA_RK23F_STR-EBUDGET_PD sy-vline 
WA_RK23F_STR-CKML_ALPROC_TEXT sy-vline 
WA_RK23F_STR-EVORNR_AUF sy-vline 
WA_RK23F_STR-WORK_ITEM_ID sy-vline 
WA_RK23F_STR-ESERVICE_DOC_TYPE sy-vline 
WA_RK23F_STR-ESERVICE_DOC_ID sy-vline 
WA_RK23F_STR-ESERVICE_DOC_ITEM_ID sy-vline 
WA_RK23F_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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