ABAP Select data from SAP table RNSDO_STD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNSDO_STD
*  INTO TABLE @DATA(IT_RNSDO_STD2).
*--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_RNSDO_STD INDEX 1 INTO DATA(WA_RNSDO_STD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNSDO_STD>-INSTNR = 1.
<RNSDO_STD>-ESTABCODE = 1.
<RNSDO_STD>-SDOID = 1.
<RNSDO_STD>-NNAME = 1.
<RNSDO_STD>-VNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNSDO_STD-GSCHL, sy-vline,
  WA_RNSDO_STD-GSCHLE, sy-vline,
  WA_RNSDO_STD-GBDAT, sy-vline,
  WA_RNSDO_STD-ISTATBPL, sy-vline,
  WA_RNSDO_STD-FAMST, sy-vline,
  WA_RNSDO_STD-FAMSTTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNSDO_STD 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_RNSDO_STD 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_RNSDO_STD INTO WA_RNSDO_STD.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ORGPF_TRF1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-ORGPF_TRF1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-ORGPF_TRF1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF_TRF2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-ORGPF_TRF2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-ORGPF_TRF2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF_TRF3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-ORGPF_TRF3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-ORGPF_TRF3.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SEC_ICPML1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-SEC_ICPML1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-SEC_ICPML1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEC_ICPML2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-SEC_ICPML2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-SEC_ICPML2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEC_ICPML3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-SEC_ICPML3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-SEC_ICPML3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEC_ICPML4
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-SEC_ICPML4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-SEC_ICPML4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEC_ICPML5
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-SEC_ICPML5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-SEC_ICPML5.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field WLPRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNSDO_STD-WLPRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNSDO_STD-WLPRI.
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_RNSDO_STD_STR, 
INSTNR TYPE STRING,
ESTABCODE TYPE STRING,
SDOID TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
GSCHL TYPE STRING,
GSCHLE TYPE STRING,
GBDAT TYPE STRING,
ISTATBPL TYPE STRING,
FAMST TYPE STRING,
FAMSTTXT TYPE STRING,
ISTAT_RES TYPE STRING,
NATIO TYPE STRING,
HEALTHID TYPE STRING,
ITREG TYPE STRING,
ITREGTXT TYPE STRING,
KKSNR TYPE STRING,
HOSP_TYPE TYPE STRING,
CASE_TYPETXT TYPE STRING,
BWIDT_ADM TYPE STRING,
ORGPF_ADM TYPE STRING,
EXTTY TYPE STRING,
RFSCRC TYPE STRING,
ADM_TYPE TYPE STRING,
UNFKZ TYPE STRING,
UNFTX TYPE STRING,
BWIDT_TRF1 TYPE STRING,
BWIDT_TRF2 TYPE STRING,
BWIDT_TRF3 TYPE STRING,
ORGPF_TRF1 TYPE STRING,
ORGPF_TRF2 TYPE STRING,
ORGPF_TRF3 TYPE STRING,
ORGPF_DCHG TYPE STRING,
BWIDT_DCHG TYPE STRING,
BWART_DCHG TYPE STRING,
AUT_IND TYPE STRING,
ADM_REASON TYPE STRING,
NO_DAYHOSP TYPE STRING,
GBGEW TYPE STRING,
GWEIN TYPE STRING,
MAIN_DKEY TYPE STRING,
SEC_DKEY1 TYPE STRING,
SEC_DKEY2 TYPE STRING,
SEC_DKEY3 TYPE STRING,
SEC_DKEY4 TYPE STRING,
SEC_DKEY5 TYPE STRING,
MAIN_BGDOP TYPE STRING,
MAIN_ICPML TYPE STRING,
SEC_BGDOP1 TYPE STRING,
SEC_BGDOP2 TYPE STRING,
SEC_BGDOP3 TYPE STRING,
SEC_BGDOP4 TYPE STRING,
SEC_BGDOP5 TYPE STRING,
SEC_ICPML1 TYPE STRING,
SEC_ICPML2 TYPE STRING,
SEC_ICPML3 TYPE STRING,
SEC_ICPML4 TYPE STRING,
SEC_ICPML5 TYPE STRING,
DRG_CODE TYPE STRING,
WLADT TYPE STRING,
WLPRI TYPE STRING,
TEAMSTCODE TYPE STRING,
TEAMNNAME TYPE STRING,
TEAMVNAME TYPE STRING,
TEAMPERSID TYPE STRING,
TEAMINSTNR TYPE STRING,
TEAMACNYM TYPE STRING,
TEAMCARDNR TYPE STRING,
TEAMEXPDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNSDO_STD_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_RNSDO_STD_STR-INSTNR sy-vline 
WA_RNSDO_STD_STR-ESTABCODE sy-vline 
WA_RNSDO_STD_STR-SDOID sy-vline 
WA_RNSDO_STD_STR-NNAME sy-vline 
WA_RNSDO_STD_STR-VNAME sy-vline 
WA_RNSDO_STD_STR-GSCHL sy-vline 
WA_RNSDO_STD_STR-GSCHLE sy-vline 
WA_RNSDO_STD_STR-GBDAT sy-vline 
WA_RNSDO_STD_STR-ISTATBPL sy-vline 
WA_RNSDO_STD_STR-FAMST sy-vline 
WA_RNSDO_STD_STR-FAMSTTXT sy-vline 
WA_RNSDO_STD_STR-ISTAT_RES sy-vline 
WA_RNSDO_STD_STR-NATIO sy-vline 
WA_RNSDO_STD_STR-HEALTHID sy-vline 
WA_RNSDO_STD_STR-ITREG sy-vline 
WA_RNSDO_STD_STR-ITREGTXT sy-vline 
WA_RNSDO_STD_STR-KKSNR sy-vline 
WA_RNSDO_STD_STR-HOSP_TYPE sy-vline 
WA_RNSDO_STD_STR-CASE_TYPETXT sy-vline 
WA_RNSDO_STD_STR-BWIDT_ADM sy-vline 
WA_RNSDO_STD_STR-ORGPF_ADM sy-vline 
WA_RNSDO_STD_STR-EXTTY sy-vline 
WA_RNSDO_STD_STR-RFSCRC sy-vline 
WA_RNSDO_STD_STR-ADM_TYPE sy-vline 
WA_RNSDO_STD_STR-UNFKZ sy-vline 
WA_RNSDO_STD_STR-UNFTX sy-vline 
WA_RNSDO_STD_STR-BWIDT_TRF1 sy-vline 
WA_RNSDO_STD_STR-BWIDT_TRF2 sy-vline 
WA_RNSDO_STD_STR-BWIDT_TRF3 sy-vline 
WA_RNSDO_STD_STR-ORGPF_TRF1 sy-vline 
WA_RNSDO_STD_STR-ORGPF_TRF2 sy-vline 
WA_RNSDO_STD_STR-ORGPF_TRF3 sy-vline 
WA_RNSDO_STD_STR-ORGPF_DCHG sy-vline 
WA_RNSDO_STD_STR-BWIDT_DCHG sy-vline 
WA_RNSDO_STD_STR-BWART_DCHG sy-vline 
WA_RNSDO_STD_STR-AUT_IND sy-vline 
WA_RNSDO_STD_STR-ADM_REASON sy-vline 
WA_RNSDO_STD_STR-NO_DAYHOSP sy-vline 
WA_RNSDO_STD_STR-GBGEW sy-vline 
WA_RNSDO_STD_STR-GWEIN sy-vline 
WA_RNSDO_STD_STR-MAIN_DKEY sy-vline 
WA_RNSDO_STD_STR-SEC_DKEY1 sy-vline 
WA_RNSDO_STD_STR-SEC_DKEY2 sy-vline 
WA_RNSDO_STD_STR-SEC_DKEY3 sy-vline 
WA_RNSDO_STD_STR-SEC_DKEY4 sy-vline 
WA_RNSDO_STD_STR-SEC_DKEY5 sy-vline 
WA_RNSDO_STD_STR-MAIN_BGDOP sy-vline 
WA_RNSDO_STD_STR-MAIN_ICPML sy-vline 
WA_RNSDO_STD_STR-SEC_BGDOP1 sy-vline 
WA_RNSDO_STD_STR-SEC_BGDOP2 sy-vline 
WA_RNSDO_STD_STR-SEC_BGDOP3 sy-vline 
WA_RNSDO_STD_STR-SEC_BGDOP4 sy-vline 
WA_RNSDO_STD_STR-SEC_BGDOP5 sy-vline 
WA_RNSDO_STD_STR-SEC_ICPML1 sy-vline 
WA_RNSDO_STD_STR-SEC_ICPML2 sy-vline 
WA_RNSDO_STD_STR-SEC_ICPML3 sy-vline 
WA_RNSDO_STD_STR-SEC_ICPML4 sy-vline 
WA_RNSDO_STD_STR-SEC_ICPML5 sy-vline 
WA_RNSDO_STD_STR-DRG_CODE sy-vline 
WA_RNSDO_STD_STR-WLADT sy-vline 
WA_RNSDO_STD_STR-WLPRI sy-vline 
WA_RNSDO_STD_STR-TEAMSTCODE sy-vline 
WA_RNSDO_STD_STR-TEAMNNAME sy-vline 
WA_RNSDO_STD_STR-TEAMVNAME sy-vline 
WA_RNSDO_STD_STR-TEAMPERSID sy-vline 
WA_RNSDO_STD_STR-TEAMINSTNR sy-vline 
WA_RNSDO_STD_STR-TEAMACNYM sy-vline 
WA_RNSDO_STD_STR-TEAMCARDNR sy-vline 
WA_RNSDO_STD_STR-TEAMEXPDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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