ABAP Select data from SAP table UGBW_S_HIERSTRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UGBW_S_HIERSTRUC
*  INTO TABLE @DATA(IT_UGBW_S_HIERSTRUC2).
*--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_UGBW_S_HIERSTRUC INDEX 1 INTO DATA(WA_UGBW_S_HIERSTRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UGBW_S_HIERSTRUC>-HIEID = 1.
<UGBW_S_HIERSTRUC>-OBJVERS = 1.
<UGBW_S_HIERSTRUC>-NODEID = 1.
<UGBW_S_HIERSTRUC>-IOBJNM = 1.
<UGBW_S_HIERSTRUC>-NODENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UGBW_S_HIERSTRUC-TLEVEL, sy-vline,
  WA_UGBW_S_HIERSTRUC-LINK, sy-vline,
  WA_UGBW_S_HIERSTRUC-PARENTID, sy-vline,
  WA_UGBW_S_HIERSTRUC-CHILDID, sy-vline,
  WA_UGBW_S_HIERSTRUC-NEXTID, sy-vline,
  WA_UGBW_S_HIERSTRUC-DATETO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UGBW_S_HIERSTRUC 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_UGBW_S_HIERSTRUC 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_UGBW_S_HIERSTRUC INTO WA_UGBW_S_HIERSTRUC.


*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_UGBW_S_HIERSTRUC_STR, 
HIEID TYPE STRING,
OBJVERS TYPE STRING,
NODEID TYPE STRING,
IOBJNM TYPE STRING,
NODENAME TYPE STRING,
TLEVEL TYPE STRING,
LINK TYPE STRING,
PARENTID TYPE STRING,
CHILDID TYPE STRING,
NEXTID TYPE STRING,
DATETO TYPE STRING,
DATEFROM TYPE STRING,
INTERVL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UGBW_S_HIERSTRUC_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_UGBW_S_HIERSTRUC_STR-HIEID sy-vline 
WA_UGBW_S_HIERSTRUC_STR-OBJVERS sy-vline 
WA_UGBW_S_HIERSTRUC_STR-NODEID sy-vline 
WA_UGBW_S_HIERSTRUC_STR-IOBJNM sy-vline 
WA_UGBW_S_HIERSTRUC_STR-NODENAME sy-vline 
WA_UGBW_S_HIERSTRUC_STR-TLEVEL sy-vline 
WA_UGBW_S_HIERSTRUC_STR-LINK sy-vline 
WA_UGBW_S_HIERSTRUC_STR-PARENTID sy-vline 
WA_UGBW_S_HIERSTRUC_STR-CHILDID sy-vline 
WA_UGBW_S_HIERSTRUC_STR-NEXTID sy-vline 
WA_UGBW_S_HIERSTRUC_STR-DATETO sy-vline 
WA_UGBW_S_HIERSTRUC_STR-DATEFROM sy-vline 
WA_UGBW_S_HIERSTRUC_STR-INTERVL sy-vline      INTO ld_text SEPARATED BY SPACE.

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