ABAP Select data from SAP table HRASR00_DT_NODE_SPEC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRASR00_DT_NODE_SPEC 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 HRASR00_DT_NODE_SPEC. 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 HRASR00_DT_NODE_SPEC 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_HRASR00_DT_NODE_SPEC TYPE STANDARD TABLE OF HRASR00_DT_NODE_SPEC,
      WA_HRASR00_DT_NODE_SPEC TYPE HRASR00_DT_NODE_SPEC,
      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: <HRASR00_DT_NODE_SPEC> TYPE HRASR00_DT_NODE_SPEC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRASR00_DT_NODE_SPEC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRASR00_DT_NODE_SPEC
  INTO TABLE IT_HRASR00_DT_NODE_SPEC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRASR00_DT_NODE_SPEC
*  INTO TABLE @DATA(IT_HRASR00_DT_NODE_SPEC2).
*--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_HRASR00_DT_NODE_SPEC INDEX 1 INTO DATA(WA_HRASR00_DT_NODE_SPEC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRASR00_DT_NODE_SPEC ASSIGNING <HRASR00_DT_NODE_SPEC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRASR00_DT_NODE_SPEC>-NODE_KEY = 1.
<HRASR00_DT_NODE_SPEC>-PARENT_NODE_KEY = 1.
<HRASR00_DT_NODE_SPEC>-IS_FOLDER = 1.
<HRASR00_DT_NODE_SPEC>-CHILDREN_MIGHT_EXIST = 1.
<HRASR00_DT_NODE_SPEC>-EXPANDED = 1.

ENDLOOP.

LOOP AT IT_HRASR00_DT_NODE_SPEC INTO WA_HRASR00_DT_NODE_SPEC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRASR00_DT_NODE_SPEC-OBJECT_KEY, sy-vline,
  WA_HRASR00_DT_NODE_SPEC-NODE_TYPE_FOR_OBJ_KEY_DETERM, sy-vline,
  WA_HRASR00_DT_NODE_SPEC-NODE_TYPE, sy-vline,
  WA_HRASR00_DT_NODE_SPEC-NODE_ID, sy-vline,
  WA_HRASR00_DT_NODE_SPEC-CARDINALITY, sy-vline,
  WA_HRASR00_DT_NODE_SPEC-EXPAND_NODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRASR00_DT_NODE_SPEC 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_HRASR00_DT_NODE_SPEC 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_HRASR00_DT_NODE_SPEC INTO WA_HRASR00_DT_NODE_SPEC.


*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_HRASR00_DT_NODE_SPEC_STR, 
NODE_KEY TYPE STRING,
PARENT_NODE_KEY TYPE STRING,
IS_FOLDER TYPE STRING,
CHILDREN_MIGHT_EXIST TYPE STRING,
EXPANDED TYPE STRING,
OBJECT_KEY TYPE STRING,
NODE_TYPE_FOR_OBJ_KEY_DETERM TYPE STRING,
NODE_TYPE TYPE STRING,
NODE_ID TYPE STRING,
CARDINALITY TYPE STRING,
EXPAND_NODE TYPE STRING,
PROVIDER_ID TYPE STRING,
COLUMN1_TEXT TYPE STRING,
COLUMN2_TEXT TYPE STRING,
NODE_IMAGE TYPE STRING,
EXPANDED_NODE_IMAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRASR00_DT_NODE_SPEC_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_HRASR00_DT_NODE_SPEC_STR-NODE_KEY sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-PARENT_NODE_KEY sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-IS_FOLDER sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-CHILDREN_MIGHT_EXIST sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-EXPANDED sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-OBJECT_KEY sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-NODE_TYPE_FOR_OBJ_KEY_DETERM sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-NODE_TYPE sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-NODE_ID sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-CARDINALITY sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-EXPAND_NODE sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-PROVIDER_ID sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-COLUMN1_TEXT sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-COLUMN2_TEXT sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-NODE_IMAGE sy-vline 
WA_HRASR00_DT_NODE_SPEC_STR-EXPANDED_NODE_IMAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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