ABAP Select data from SAP table HIER_S0100 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HIER_S0100 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 HIER_S0100. 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 HIER_S0100 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_HIER_S0100 TYPE STANDARD TABLE OF HIER_S0100,
      WA_HIER_S0100 TYPE HIER_S0100,
      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: <HIER_S0100> TYPE HIER_S0100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HIER_S0100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HIER_S0100
  INTO TABLE IT_HIER_S0100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HIER_S0100
*  INTO TABLE @DATA(IT_HIER_S01002).
*--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_HIER_S0100 INDEX 1 INTO DATA(WA_HIER_S01002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HIER_S0100 ASSIGNING <HIER_S0100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HIER_S0100>-NODE_TYPE = 1.
<HIER_S0100>-DESCRIPT = 1.
<HIER_S0100>-ACTIVE = 1.
<HIER_S0100>-ACTIVE_TXT = 1.
<HIER_S0100>-RADIOB = 1.

ENDLOOP.

LOOP AT IT_HIER_S0100 INTO WA_HIER_S0100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HIER_S0100-ELEMENT, sy-vline,
  WA_HIER_S0100-ELEMENT_TX, sy-vline,
  WA_HIER_S0100-ICON, sy-vline,
  WA_HIER_S0100-ICON_ID, sy-vline,
  WA_HIER_S0100-HOTSPOT, sy-vline,
  WA_HIER_S0100-FIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HIER_S0100 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_HIER_S0100 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_HIER_S0100 INTO WA_HIER_S0100.


*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_HIER_S0100_STR, 
NODE_TYPE TYPE STRING,
DESCRIPT TYPE STRING,
ACTIVE TYPE STRING,
ACTIVE_TXT TYPE STRING,
RADIOB TYPE STRING,
ELEMENT TYPE STRING,
ELEMENT_TX TYPE STRING,
ICON TYPE STRING,
ICON_ID TYPE STRING,
HOTSPOT TYPE STRING,
FIX TYPE STRING,
REF_EXISTS TYPE STRING,
SHORTTEXT TYPE STRING,
STEXTTYPE TYPE STRING,
LONGTEXT TYPE STRING,
LTEXTTYPE TYPE STRING,
ATR_COU TYPE STRING,
ATR_BRA TYPE STRING,
ATR_ROLE TYPE STRING,
ATR_SUBJ TYPE STRING,
ATR_ROAD TYPE STRING,
FUSER TYPE STRING,
FDATE TYPE STRING,
FTIME TYPE STRING,
FRELEASE TYPE STRING,
LUSER TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
LRELEASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HIER_S0100_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_HIER_S0100_STR-NODE_TYPE sy-vline 
WA_HIER_S0100_STR-DESCRIPT sy-vline 
WA_HIER_S0100_STR-ACTIVE sy-vline 
WA_HIER_S0100_STR-ACTIVE_TXT sy-vline 
WA_HIER_S0100_STR-RADIOB sy-vline 
WA_HIER_S0100_STR-ELEMENT sy-vline 
WA_HIER_S0100_STR-ELEMENT_TX sy-vline 
WA_HIER_S0100_STR-ICON sy-vline 
WA_HIER_S0100_STR-ICON_ID sy-vline 
WA_HIER_S0100_STR-HOTSPOT sy-vline 
WA_HIER_S0100_STR-FIX sy-vline 
WA_HIER_S0100_STR-REF_EXISTS sy-vline 
WA_HIER_S0100_STR-SHORTTEXT sy-vline 
WA_HIER_S0100_STR-STEXTTYPE sy-vline 
WA_HIER_S0100_STR-LONGTEXT sy-vline 
WA_HIER_S0100_STR-LTEXTTYPE sy-vline 
WA_HIER_S0100_STR-ATR_COU sy-vline 
WA_HIER_S0100_STR-ATR_BRA sy-vline 
WA_HIER_S0100_STR-ATR_ROLE sy-vline 
WA_HIER_S0100_STR-ATR_SUBJ sy-vline 
WA_HIER_S0100_STR-ATR_ROAD sy-vline 
WA_HIER_S0100_STR-FUSER sy-vline 
WA_HIER_S0100_STR-FDATE sy-vline 
WA_HIER_S0100_STR-FTIME sy-vline 
WA_HIER_S0100_STR-FRELEASE sy-vline 
WA_HIER_S0100_STR-LUSER sy-vline 
WA_HIER_S0100_STR-LDATE sy-vline 
WA_HIER_S0100_STR-LTIME sy-vline 
WA_HIER_S0100_STR-LRELEASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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