ABAP Select data from SAP table RHRRPATTRNOD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RHRRPATTRNOD
*  INTO TABLE @DATA(IT_RHRRPATTRNOD2).
*--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_RHRRPATTRNOD INDEX 1 INTO DATA(WA_RHRRPATTRNOD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RHRRPATTRNOD>-MANDT = 1.
<RHRRPATTRNOD>-HIERARCHYID = 1.
<RHRRPATTRNOD>-HIERARCHYVERSION = 1.
<RHRRPATTRNOD>-VALIDITYENDDATE = 1.
<RHRRPATTRNOD>-HIERARCHYNODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RHRRPATTRNOD-HIERARCHYNODECLASS, sy-vline,
  WA_RHRRPATTRNOD-PARENTNODE, sy-vline,
  WA_RHRRPATTRNOD-HIERARCHYNODEATTRIBUTENAME, sy-vline,
  WA_RHRRPATTRNOD-HIERNODEATTRIBUTERANGEFROMVAL, sy-vline,
  WA_RHRRPATTRNOD-HIERNODEATTRIBUTERANGETOVAL, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_RHRRPATTRNOD 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_RHRRPATTRNOD 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_RHRRPATTRNOD INTO WA_RHRRPATTRNOD.


*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_RHRRPATTRNOD_STR, 
MANDT TYPE STRING,
HIERARCHYID TYPE STRING,
HIERARCHYVERSION TYPE STRING,
VALIDITYENDDATE TYPE STRING,
HIERARCHYNODE TYPE STRING,
HIERARCHYNODECLASS TYPE STRING,
PARENTNODE TYPE STRING,
HIERARCHYNODEATTRIBUTENAME TYPE STRING,
HIERNODEATTRIBUTERANGEFROMVAL TYPE STRING,
HIERNODEATTRIBUTERANGETOVAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RHRRPATTRNOD_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_RHRRPATTRNOD_STR-MANDT sy-vline 
WA_RHRRPATTRNOD_STR-HIERARCHYID sy-vline 
WA_RHRRPATTRNOD_STR-HIERARCHYVERSION sy-vline 
WA_RHRRPATTRNOD_STR-VALIDITYENDDATE sy-vline 
WA_RHRRPATTRNOD_STR-HIERARCHYNODE sy-vline 
WA_RHRRPATTRNOD_STR-HIERARCHYNODECLASS sy-vline 
WA_RHRRPATTRNOD_STR-PARENTNODE sy-vline 
WA_RHRRPATTRNOD_STR-HIERARCHYNODEATTRIBUTENAME sy-vline 
WA_RHRRPATTRNOD_STR-HIERNODEATTRIBUTERANGEFROMVAL sy-vline 
WA_RHRRPATTRNOD_STR-HIERNODEATTRIBUTERANGETOVAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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