ABAP Select data from SAP table HRV_RHKURS20 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRV_RHKURS20 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 HRV_RHKURS20. 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 HRV_RHKURS20 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_HRV_RHKURS20 TYPE STANDARD TABLE OF HRV_RHKURS20,
      WA_HRV_RHKURS20 TYPE HRV_RHKURS20,
      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: <HRV_RHKURS20> TYPE HRV_RHKURS20.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRV_RHKURS20.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRV_RHKURS20
  INTO TABLE IT_HRV_RHKURS20.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRV_RHKURS20
*  INTO TABLE @DATA(IT_HRV_RHKURS202).
*--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_HRV_RHKURS20 INDEX 1 INTO DATA(WA_HRV_RHKURS202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRV_RHKURS20 ASSIGNING <HRV_RHKURS20>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRV_RHKURS20>-ETTYP = 1.
<HRV_RHKURS20>-ETYID = 1.
<HRV_RHKURS20>-ETSHT = 1.
<HRV_RHKURS20>-ETSTX = 1.
<HRV_RHKURS20>-EVTYP = 1.

ENDLOOP.

LOOP AT IT_HRV_RHKURS20 INTO WA_HRV_RHKURS20.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRV_RHKURS20-EVEID, sy-vline,
  WA_HRV_RHKURS20-EVSHT, sy-vline,
  WA_HRV_RHKURS20-EVSTX, sy-vline,
  WA_HRV_RHKURS20-EVBEG, sy-vline,
  WA_HRV_RHKURS20-EVEND, sy-vline,
  WA_HRV_RHKURS20-EVLNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRV_RHKURS20 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_HRV_RHKURS20 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_HRV_RHKURS20 INTO WA_HRV_RHKURS20.


*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 ISOLA, internal->external for field EVLNG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_HRV_RHKURS20-EVLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_RHKURS20-EVLNG.
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_HRV_RHKURS20_STR, 
ETTYP TYPE STRING,
ETYID TYPE STRING,
ETSHT TYPE STRING,
ETSTX TYPE STRING,
EVTYP TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
EVLNG TYPE STRING,
GMANZL TYPE STRING,
NMANZL TYPE STRING,
WMANZL TYPE STRING,
LOCKM TYPE STRING,
DELET TYPE STRING,
HISTO TYPE STRING,
FLUPX TYPE STRING,
EVFIX TYPE STRING,
EVEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRV_RHKURS20_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_HRV_RHKURS20_STR-ETTYP sy-vline 
WA_HRV_RHKURS20_STR-ETYID sy-vline 
WA_HRV_RHKURS20_STR-ETSHT sy-vline 
WA_HRV_RHKURS20_STR-ETSTX sy-vline 
WA_HRV_RHKURS20_STR-EVTYP sy-vline 
WA_HRV_RHKURS20_STR-EVEID sy-vline 
WA_HRV_RHKURS20_STR-EVSHT sy-vline 
WA_HRV_RHKURS20_STR-EVSTX sy-vline 
WA_HRV_RHKURS20_STR-EVBEG sy-vline 
WA_HRV_RHKURS20_STR-EVEND sy-vline 
WA_HRV_RHKURS20_STR-EVLNG sy-vline 
WA_HRV_RHKURS20_STR-GMANZL sy-vline 
WA_HRV_RHKURS20_STR-NMANZL sy-vline 
WA_HRV_RHKURS20_STR-WMANZL sy-vline 
WA_HRV_RHKURS20_STR-LOCKM sy-vline 
WA_HRV_RHKURS20_STR-DELET sy-vline 
WA_HRV_RHKURS20_STR-HISTO sy-vline 
WA_HRV_RHKURS20_STR-FLUPX sy-vline 
WA_HRV_RHKURS20_STR-EVFIX sy-vline 
WA_HRV_RHKURS20_STR-EVEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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