ABAP Select data from SAP table RNWP_MEDCONTROL_LIST_GVD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWP_MEDCONTROL_LIST_GVD
*  INTO TABLE @DATA(IT_RNWP_MEDCONTROL_LIST_GVD2).
*--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_RNWP_MEDCONTROL_LIST_GVD INDEX 1 INTO DATA(WA_RNWP_MEDCONTROL_LIST_GVD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWP_MEDCONTROL_LIST_GVD>-TARIF = 1.
<RNWP_MEDCONTROL_LIST_GVD>-TARLS = 1.
<RNWP_MEDCONTROL_LIST_GVD>-KTXTCONC = 1.
<RNWP_MEDCONTROL_LIST_GVD>-CASE_VWD = 1.
<RNWP_MEDCONTROL_LIST_GVD>-MGVD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWP_MEDCONTROL_LIST_GVD-OGVD, sy-vline,
  WA_RNWP_MEDCONTROL_LIST_GVD-UGVD, sy-vline,
  WA_RNWP_MEDCONTROL_LIST_GVD-DAYS_OGVD, sy-vline,
  WA_RNWP_MEDCONTROL_LIST_GVD-DAYS_OGVD_ICON, sy-vline,
  WA_RNWP_MEDCONTROL_LIST_GVD-DAYS_UGVD, sy-vline,
  WA_RNWP_MEDCONTROL_LIST_GVD-DAYS_UGVD_ICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWP_MEDCONTROL_LIST_GVD 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_RNWP_MEDCONTROL_LIST_GVD 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_RNWP_MEDCONTROL_LIST_GVD INTO WA_RNWP_MEDCONTROL_LIST_GVD.


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

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

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

*Conversion exit ALPHA, internal->external for field UNIRETCASE_FALNR_LEAD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWP_MEDCONTROL_LIST_GVD-UNIRETCASE_FALNR_LEAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWP_MEDCONTROL_LIST_GVD-UNIRETCASE_FALNR_LEAD.
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_RNWP_MEDCONTROL_LIST_GVD_STR, 
TARIF TYPE STRING,
TARLS TYPE STRING,
KTXTCONC TYPE STRING,
CASE_VWD TYPE STRING,
MGVD TYPE STRING,
OGVD TYPE STRING,
UGVD TYPE STRING,
DAYS_OGVD TYPE STRING,
DAYS_OGVD_ICON TYPE STRING,
DAYS_UGVD TYPE STRING,
DAYS_UGVD_ICON TYPE STRING,
DAYS_MGVD TYPE STRING,
DAYS_MGVD_ICON TYPE STRING,
REL_OGVD TYPE STRING,
REL_UGVD TYPE STRING,
REL_MGVD TYPE STRING,
DAYS_TO_OGVD TYPE STRING,
OGVD_DAT TYPE STRING,
UGVD_DAT TYPE STRING,
MVWD_DAT TYPE STRING,
VWD_H TYPE STRING,
MINDEST_VWD TYPE STRING,
BWREL TYPE STRING,
WAERS TYPE STRING,
ENZKY TYPE STRING,
ENZKY_TXT TYPE STRING,
EFFBWR TYPE STRING,
GRUNDPREIS TYPE STRING,
DRG_ENTGELT TYPE STRING,
ZUABSCHL_KZ TYPE STRING,
ZUABSCHL_KZ_TXT TYPE STRING,
ZUABSCHL_RELAT_KAT TYPE STRING,
ZUABSCHL_TAGE TYPE STRING,
ZUABSCHL_RELAT TYPE STRING,
ZUABSCHL_BETRAG_KAT TYPE STRING,
ZUABSCHL_BETRAG TYPE STRING,
BPFLV_FALL TYPE STRING,
WIEDERKEHRER_FALL TYPE STRING,
VORGAENGER_FALL TYPE STRING,
WIEDERKEHRER_FALNR TYPE STRING,
UNIRETCASE_STATUS TYPE STRING,
UNIRETCASE_STATUS_ICON TYPE STRING,
UNIRETCASE_FALNR_LEAD TYPE STRING,
PEPP_FALL TYPE STRING,
PEPP_BWREL TYPE STRING,
PEPP_STEP TYPE STRING,
PEPP_VWDFROM TYPE STRING,
PEPP_VWDTO TYPE STRING,
PEPP_VWDREL TYPE STRING,
PEPP_BASENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWP_MEDCONTROL_LIST_GVD_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_RNWP_MEDCONTROL_LIST_GVD_STR-TARIF sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-TARLS sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-KTXTCONC sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-CASE_VWD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-MGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-OGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-UGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_OGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_OGVD_ICON sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_UGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_UGVD_ICON sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_MGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_MGVD_ICON sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-REL_OGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-REL_UGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-REL_MGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DAYS_TO_OGVD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-OGVD_DAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-UGVD_DAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-MVWD_DAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-VWD_H sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-MINDEST_VWD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-BWREL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-WAERS sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ENZKY sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ENZKY_TXT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-EFFBWR sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-GRUNDPREIS sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-DRG_ENTGELT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_KZ sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_KZ_TXT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_RELAT_KAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_TAGE sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_RELAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_BETRAG_KAT sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-ZUABSCHL_BETRAG sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-BPFLV_FALL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-WIEDERKEHRER_FALL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-VORGAENGER_FALL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-WIEDERKEHRER_FALNR sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-UNIRETCASE_STATUS sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-UNIRETCASE_STATUS_ICON sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-UNIRETCASE_FALNR_LEAD sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_FALL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_BWREL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_STEP sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_VWDFROM sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_VWDTO sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_VWDREL sy-vline 
WA_RNWP_MEDCONTROL_LIST_GVD_STR-PEPP_BASENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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