ABAP Select data from SAP table RNWCH_SDRG_MED_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWCH_SDRG_MED_DATA
*  INTO TABLE @DATA(IT_RNWCH_SDRG_MED_DATA2).
*--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_RNWCH_SDRG_MED_DATA INDEX 1 INTO DATA(WA_RNWCH_SDRG_MED_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWCH_SDRG_MED_DATA>-MANDT = 1.
<RNWCH_SDRG_MED_DATA>-EINRI = 1.
<RNWCH_SDRG_MED_DATA>-FALNR = 1.
<RNWCH_SDRG_MED_DATA>-BETNUM = 1.
<RNWCH_SDRG_MED_DATA>-NOGACODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWCH_SDRG_MED_DATA-KANTON, sy-vline,
  WA_RNWCH_SDRG_MED_DATA-KENNZ, sy-vline,
  WA_RNWCH_SDRG_MED_DATA-NEUGEDAT, sy-vline,
  WA_RNWCH_SDRG_MED_DATA-PSYDAT, sy-vline,
  WA_RNWCH_SDRG_MED_DATA-FALKOSTDAT, sy-vline,
  WA_RNWCH_SDRG_MED_DATA-KANTONDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWCH_SDRG_MED_DATA 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_RNWCH_SDRG_MED_DATA 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_RNWCH_SDRG_MED_DATA INTO WA_RNWCH_SDRG_MED_DATA.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANZLBGEB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_SDRG_MED_DATA-ANZLBGEB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_SDRG_MED_DATA-ANZLBGEB.
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_RNWCH_SDRG_MED_DATA_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
BETNUM TYPE STRING,
NOGACODE TYPE STRING,
KANTON TYPE STRING,
KENNZ TYPE STRING,
NEUGEDAT TYPE STRING,
PSYDAT TYPE STRING,
FALKOSTDAT TYPE STRING,
KANTONDAT TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
GSCHL TYPE STRING,
GBDAT TYPE STRING,
ALTEINTR TYPE STRING,
PSTLZ TYPE STRING,
NATIO TYPE STRING,
BEHANDART TYPE STRING,
BEHANDKLAS TYPE STRING,
HAUPTKOST TYPE STRING,
KOSTTRAG TYPE STRING,
GEBNR TYPE STRING,
MEHRL TYPE STRING,
GEBRANG TYPE STRING,
LAENG TYPE STRING,
GREIN TYPE STRING,
GEBDATM TYPE STRING,
STALT1 TYPE STRING,
STALT2 TYPE STRING,
ANZSW TYPE STRING,
ANZLBGEB TYPE STRING,
ANZTDGEB TYPE STRING,
ANZABBR TYPE STRING,
FAMST TYPE STRING,
AUFVOREINTR TYPE STRING,
TLERW TYPE STRING,
VOERW TYPE STRING,
NIERW TYPE STRING,
HAUSH TYPE STRING,
AUSBI TYPE STRING,
REHAB TYPE STRING,
RENTE TYPE STRING,
SCHUZ TYPE STRING,
UNERW TYPE STRING,
SCHUL TYPE STRING,
INSTEIN TYPE STRING,
FREIW TYPE STRING,
FREIH TYPE STRING,
ANZTAGE TYPE STRING,
BHAND TYPE STRING,
NEURO TYPE STRING,
DEPOT TYPE STRING,
ADEPR TYPE STRING,
TRNQU TYPE STRING,
HYPNO TYPE STRING,
AEPIL TYPE STRING,
LITHM TYPE STRING,
SUBST TYPE STRING,
AVERS TYPE STRING,
APARK TYPE STRING,
APHRM TYPE STRING,
MEDKL TYPE STRING,
ENTAUSTR TYPE STRING,
AUFNACHAUSTR TYPE STRING,
AUFNACHAUSTR_PR TYPE STRING,
BEHANDAUSTR TYPE STRING,
BEHANDAUSTR_PR TYPE STRING,
AUFNGEW TYPE STRING,
KOPFGEB TYPE STRING,
DRGSTAT TYPE STRING,
LOKSPITAL TYPE STRING,
RVNUM_PR TYPE STRING,
KRVERS_PR TYPE STRING,
T_MEDIC_PR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWCH_SDRG_MED_DATA_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_RNWCH_SDRG_MED_DATA_STR-MANDT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-EINRI sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-FALNR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BETNUM sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NOGACODE sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KANTON sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KENNZ sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NEUGEDAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-PSYDAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-FALKOSTDAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KANTONDAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NNAME sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-VNAME sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GSCHL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GBDAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ALTEINTR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-PSTLZ sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NATIO sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BEHANDART sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BEHANDKLAS sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-HAUPTKOST sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KOSTTRAG sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GEBNR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-MEHRL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GEBRANG sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-LAENG sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GREIN sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-GEBDATM sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-STALT1 sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-STALT2 sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ANZSW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ANZLBGEB sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ANZTDGEB sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ANZABBR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-FAMST sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AUFVOREINTR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-TLERW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-VOERW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NIERW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-HAUSH sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AUSBI sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-REHAB sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-RENTE sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-SCHUZ sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-UNERW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-SCHUL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-INSTEIN sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-FREIW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-FREIH sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ANZTAGE sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BHAND sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-NEURO sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-DEPOT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ADEPR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-TRNQU sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-HYPNO sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AEPIL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-LITHM sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-SUBST sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AVERS sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-APARK sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-APHRM sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-MEDKL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-ENTAUSTR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AUFNACHAUSTR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AUFNACHAUSTR_PR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BEHANDAUSTR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-BEHANDAUSTR_PR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-AUFNGEW sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KOPFGEB sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-DRGSTAT sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-LOKSPITAL sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-RVNUM_PR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-KRVERS_PR sy-vline 
WA_RNWCH_SDRG_MED_DATA_STR-T_MEDIC_PR sy-vline      INTO ld_text SEPARATED BY SPACE.

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