ABAP Select data from SAP table HRDATASET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDATASET
*  INTO TABLE @DATA(IT_HRDATASET2).
*--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_HRDATASET INDEX 1 INTO DATA(WA_HRDATASET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDATASET>-PERNR = 1.
<HRDATASET>-BEGDA = 1.
<HRDATASET>-WERKS = 1.
<HRDATASET>-PERSG = 1.
<HRDATASET>-PERSK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDATASET-ANREX, sy-vline,
  WA_HRDATASET-NACHN, sy-vline,
  WA_HRDATASET-VORNA, sy-vline,
  WA_HRDATASET-GBDAT, sy-vline,
  WA_HRDATASET-NATIO, sy-vline,
  WA_HRDATASET-FATXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDATASET 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_HRDATASET 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_HRDATASET INTO WA_HRDATASET.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_HRDATASET-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRDATASET-GBDAT.
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_HRDATASET_STR, 
PERNR TYPE STRING,
BEGDA TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ANREX TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
GBDAT TYPE STRING,
NATIO TYPE STRING,
FATXT TYPE STRING,
KITXT TYPE STRING,
STRAS TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
SCHKZ TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDATASET_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_HRDATASET_STR-PERNR sy-vline 
WA_HRDATASET_STR-BEGDA sy-vline 
WA_HRDATASET_STR-WERKS sy-vline 
WA_HRDATASET_STR-PERSG sy-vline 
WA_HRDATASET_STR-PERSK sy-vline 
WA_HRDATASET_STR-ANREX sy-vline 
WA_HRDATASET_STR-NACHN sy-vline 
WA_HRDATASET_STR-VORNA sy-vline 
WA_HRDATASET_STR-GBDAT sy-vline 
WA_HRDATASET_STR-NATIO sy-vline 
WA_HRDATASET_STR-FATXT sy-vline 
WA_HRDATASET_STR-KITXT sy-vline 
WA_HRDATASET_STR-STRAS sy-vline 
WA_HRDATASET_STR-PSTLZ sy-vline 
WA_HRDATASET_STR-ORT01 sy-vline 
WA_HRDATASET_STR-LAND1 sy-vline 
WA_HRDATASET_STR-SCHKZ sy-vline 
WA_HRDATASET_STR-TRFGR sy-vline 
WA_HRDATASET_STR-TRFST sy-vline      INTO ld_text SEPARATED BY SPACE.

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