ABAP Select data from SAP table HRV_RHTEILN0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRV_RHTEILN0 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_RHTEILN0. 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_RHTEILN0 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_RHTEILN0 TYPE STANDARD TABLE OF HRV_RHTEILN0,
      WA_HRV_RHTEILN0 TYPE HRV_RHTEILN0,
      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_RHTEILN0> TYPE HRV_RHTEILN0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRV_RHTEILN0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRV_RHTEILN0
  INTO TABLE IT_HRV_RHTEILN0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRV_RHTEILN0
*  INTO TABLE @DATA(IT_HRV_RHTEILN02).
*--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_RHTEILN0 INDEX 1 INTO DATA(WA_HRV_RHTEILN02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRV_RHTEILN0 ASSIGNING <HRV_RHTEILN0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRV_RHTEILN0>-PICK = 1.
<HRV_RHTEILN0>-EVETY = 1.
<HRV_RHTEILN0>-EVEID = 1.
<HRV_RHTEILN0>-EVSHT = 1.
<HRV_RHTEILN0>-EVSTX = 1.

ENDLOOP.

LOOP AT IT_HRV_RHTEILN0 INTO WA_HRV_RHTEILN0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRV_RHTEILN0-EVBEG, sy-vline,
  WA_HRV_RHTEILN0-EVEND, sy-vline,
  WA_HRV_RHTEILN0-BCONT, sy-vline,
  WA_HRV_RHTEILN0-WCONT, sy-vline,
  WA_HRV_RHTEILN0-ISTAT, sy-vline,
  WA_HRV_RHTEILN0-EVEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRV_RHTEILN0 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_RHTEILN0 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_RHTEILN0 INTO WA_HRV_RHTEILN0.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRV_RHTEILN0-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_RHTEILN0-KOSTL.
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_RHTEILN0_STR, 
PICK TYPE STRING,
EVETY TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
BCONT TYPE STRING,
WCONT TYPE STRING,
ISTAT TYPE STRING,
EVEXT TYPE STRING,
PATYP TYPE STRING,
PARID TYPE STRING,
PARSH TYPE STRING,
PARTX TYPE STRING,
MANZL TYPE STRING,
PRIOX TYPE STRING,
BUDAT TYPE STRING,
ORGTY TYPE STRING,
ORGID TYPE STRING,
ORGSH TYPE STRING,
ORGTX TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
KOSTX TYPE STRING,
KOSHT TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
NOTE TYPE STRING,
1001_POINTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRV_RHTEILN0_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_RHTEILN0_STR-PICK sy-vline 
WA_HRV_RHTEILN0_STR-EVETY sy-vline 
WA_HRV_RHTEILN0_STR-EVEID sy-vline 
WA_HRV_RHTEILN0_STR-EVSHT sy-vline 
WA_HRV_RHTEILN0_STR-EVSTX sy-vline 
WA_HRV_RHTEILN0_STR-EVBEG sy-vline 
WA_HRV_RHTEILN0_STR-EVEND sy-vline 
WA_HRV_RHTEILN0_STR-BCONT sy-vline 
WA_HRV_RHTEILN0_STR-WCONT sy-vline 
WA_HRV_RHTEILN0_STR-ISTAT sy-vline 
WA_HRV_RHTEILN0_STR-EVEXT sy-vline 
WA_HRV_RHTEILN0_STR-PATYP sy-vline 
WA_HRV_RHTEILN0_STR-PARID sy-vline 
WA_HRV_RHTEILN0_STR-PARSH sy-vline 
WA_HRV_RHTEILN0_STR-PARTX sy-vline 
WA_HRV_RHTEILN0_STR-MANZL sy-vline 
WA_HRV_RHTEILN0_STR-PRIOX sy-vline 
WA_HRV_RHTEILN0_STR-BUDAT sy-vline 
WA_HRV_RHTEILN0_STR-ORGTY sy-vline 
WA_HRV_RHTEILN0_STR-ORGID sy-vline 
WA_HRV_RHTEILN0_STR-ORGSH sy-vline 
WA_HRV_RHTEILN0_STR-ORGTX sy-vline 
WA_HRV_RHTEILN0_STR-KOKRS sy-vline 
WA_HRV_RHTEILN0_STR-KOSTL sy-vline 
WA_HRV_RHTEILN0_STR-KOSTX sy-vline 
WA_HRV_RHTEILN0_STR-KOSHT sy-vline 
WA_HRV_RHTEILN0_STR-KKOST sy-vline 
WA_HRV_RHTEILN0_STR-KWAER sy-vline 
WA_HRV_RHTEILN0_STR-NOTE sy-vline 
WA_HRV_RHTEILN0_STR-1001_POINTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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