ABAP Select data from SAP table HRDEST_S_ELSTAM_ND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDEST_S_ELSTAM_ND
*  INTO TABLE @DATA(IT_HRDEST_S_ELSTAM_ND2).
*--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_HRDEST_S_ELSTAM_ND INDEX 1 INTO DATA(WA_HRDEST_S_ELSTAM_ND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDEST_S_ELSTAM_ND>-GUELTIGAB = 1.
<HRDEST_S_ELSTAM_ND>-STRKL = 1.
<HRDEST_S_ELSTAM_ND>-KDFBT = 1.
<HRDEST_S_ELSTAM_ND>-FREIJ = 1.
<HRDEST_S_ELSTAM_ND>-FREIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDEST_S_ELSTAM_ND-FREIW, sy-vline,
  WA_HRDEST_S_ELSTAM_ND-FREIT, sy-vline,
  WA_HRDEST_S_ELSTAM_ND-HINZJ, sy-vline,
  WA_HRDEST_S_ELSTAM_ND-HINZM, sy-vline,
  WA_HRDEST_S_ELSTAM_ND-HINZW, sy-vline,
  WA_HRDEST_S_ELSTAM_ND-HINZT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDEST_S_ELSTAM_ND 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_HRDEST_S_ELSTAM_ND 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_HRDEST_S_ELSTAM_ND INTO WA_HRDEST_S_ELSTAM_ND.


*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_HRDEST_S_ELSTAM_ND_STR, 
GUELTIGAB TYPE STRING,
STRKL TYPE STRING,
KDFBT TYPE STRING,
FREIJ TYPE STRING,
FREIM TYPE STRING,
FREIW TYPE STRING,
FREIT TYPE STRING,
HINZJ TYPE STRING,
HINZM TYPE STRING,
HINZW TYPE STRING,
HINZT TYPE STRING,
KISTA TYPE STRING,
KISTE TYPE STRING,
FAKTOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDEST_S_ELSTAM_ND_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_HRDEST_S_ELSTAM_ND_STR-GUELTIGAB sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-STRKL sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-KDFBT sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-FREIJ sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-FREIM sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-FREIW sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-FREIT sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-HINZJ sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-HINZM sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-HINZW sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-HINZT sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-KISTA sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-KISTE sy-vline 
WA_HRDEST_S_ELSTAM_ND_STR-FAKTOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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