ABAP Select data from SAP table HRVRES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRVRES
*  INTO TABLE @DATA(IT_HRVRES2).
*--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_HRVRES INDEX 1 INTO DATA(WA_HRVRES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRVRES>-PLVAR = 1.
<HRVRES>-EVTYP = 1.
<HRVRES>-EVEID = 1.
<HRVRES>-ISTAT = 1.
<HRVRES>-EXTERN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRVRES-BEGDA, sy-vline,
  WA_HRVRES-ENDDA, sy-vline,
  WA_HRVRES-SHORT, sy-vline,
  WA_HRVRES-STEXT, sy-vline,
  WA_HRVRES-RETYP, sy-vline,
  WA_HRVRES-RESID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRVRES 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_HRVRES 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_HRVRES INTO WA_HRVRES.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRVRES_STR, 
PLVAR TYPE STRING,
EVTYP TYPE STRING,
EVEID TYPE STRING,
ISTAT TYPE STRING,
EXTERN TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
RETYP TYPE STRING,
RESID TYPE STRING,
REBEG TYPE STRING,
REEND TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
RESHT TYPE STRING,
RETXT TYPE STRING,
TYPOT TYPE STRING,
TYPID TYPE STRING,
TYPSH TYPE STRING,
REART TYPE STRING,
KNAPP TYPE STRING,
PRIOY TYPE STRING,
DISPO TYPE STRING,
MANZL TYPE STRING,
PUNIT TYPE STRING,
XTYPE TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
SCLAS TYPE STRING,
ORTAB TYPE STRING,
RAUMX TYPE STRING,
INSTX TYPE STRING,
MATRX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRVRES_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_HRVRES_STR-PLVAR sy-vline 
WA_HRVRES_STR-EVTYP sy-vline 
WA_HRVRES_STR-EVEID sy-vline 
WA_HRVRES_STR-ISTAT sy-vline 
WA_HRVRES_STR-EXTERN sy-vline 
WA_HRVRES_STR-BEGDA sy-vline 
WA_HRVRES_STR-ENDDA sy-vline 
WA_HRVRES_STR-SHORT sy-vline 
WA_HRVRES_STR-STEXT sy-vline 
WA_HRVRES_STR-RETYP sy-vline 
WA_HRVRES_STR-RESID sy-vline 
WA_HRVRES_STR-REBEG sy-vline 
WA_HRVRES_STR-REEND sy-vline 
WA_HRVRES_STR-BEGUZ sy-vline 
WA_HRVRES_STR-ENDUZ sy-vline 
WA_HRVRES_STR-RESHT sy-vline 
WA_HRVRES_STR-RETXT sy-vline 
WA_HRVRES_STR-TYPOT sy-vline 
WA_HRVRES_STR-TYPID sy-vline 
WA_HRVRES_STR-TYPSH sy-vline 
WA_HRVRES_STR-REART sy-vline 
WA_HRVRES_STR-KNAPP sy-vline 
WA_HRVRES_STR-PRIOY sy-vline 
WA_HRVRES_STR-DISPO sy-vline 
WA_HRVRES_STR-MANZL sy-vline 
WA_HRVRES_STR-PUNIT sy-vline 
WA_HRVRES_STR-XTYPE sy-vline 
WA_HRVRES_STR-RSIGN sy-vline 
WA_HRVRES_STR-RELAT sy-vline 
WA_HRVRES_STR-SCLAS sy-vline 
WA_HRVRES_STR-ORTAB sy-vline 
WA_HRVRES_STR-RAUMX sy-vline 
WA_HRVRES_STR-INSTX sy-vline 
WA_HRVRES_STR-MATRX sy-vline      INTO ld_text SEPARATED BY SPACE.

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