ABAP Select data from SAP table CNPB_H_OBJECTS_IN_HIERARCHY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNPB_H_OBJECTS_IN_HIERARCHY
*  INTO TABLE @DATA(IT_CNPB_H_OBJECTS_IN_HIERARCHY2).
*--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_CNPB_H_OBJECTS_IN_HIERARCHY INDEX 1 INTO DATA(WA_CNPB_H_OBJECTS_IN_HIERARCHY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNPB_H_OBJECTS_IN_HIERARCHY>-PROJ = 1.
<CNPB_H_OBJECTS_IN_HIERARCHY>-VBAP = 1.
<CNPB_H_OBJECTS_IN_HIERARCHY>-PRPS = 1.
<CNPB_H_OBJECTS_IN_HIERARCHY>-RESB = 1.
<CNPB_H_OBJECTS_IN_HIERARCHY>-AUFK_PS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNPB_H_OBJECTS_IN_HIERARCHY-AUFK_PM, sy-vline,
  WA_CNPB_H_OBJECTS_IN_HIERARCHY-AUFK_PP, sy-vline,
  WA_CNPB_H_OBJECTS_IN_HIERARCHY-AUFK_CO, sy-vline,
  WA_CNPB_H_OBJECTS_IN_HIERARCHY-AFVG_PS, sy-vline,
  WA_CNPB_H_OBJECTS_IN_HIERARCHY-AFVG_PM, sy-vline,
  WA_CNPB_H_OBJECTS_IN_HIERARCHY-AFVG_PP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNPB_H_OBJECTS_IN_HIERARCHY 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_CNPB_H_OBJECTS_IN_HIERARCHY 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_CNPB_H_OBJECTS_IN_HIERARCHY INTO WA_CNPB_H_OBJECTS_IN_HIERARCHY.


*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_CNPB_H_OBJECTS_IN_HIERARCHY_STR, 
PROJ TYPE STRING,
VBAP TYPE STRING,
PRPS TYPE STRING,
RESB TYPE STRING,
AUFK_PS TYPE STRING,
AUFK_PM TYPE STRING,
AUFK_PP TYPE STRING,
AUFK_CO TYPE STRING,
AFVG_PS TYPE STRING,
AFVG_PM TYPE STRING,
AFVG_PP TYPE STRING,
AFAB TYPE STRING,
MLST TYPE STRING,
PSTX TYPE STRING,
KBED TYPE STRING,
AFRU TYPE STRING,
AFFH TYPE STRING,
PLAF TYPE STRING,
DRAD TYPE STRING,
VALLC TYPE STRING,
AFVG_PS_UVO TYPE STRING,
AFVG_PM_UVO TYPE STRING,
AFVG_PP_UVO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNPB_H_OBJECTS_IN_HIERARCHY_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_CNPB_H_OBJECTS_IN_HIERARCHY_STR-PROJ sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-VBAP sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-PRPS sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-RESB sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AUFK_PS sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AUFK_PM sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AUFK_PP sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AUFK_CO sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PS sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PM sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PP sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFAB sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-MLST sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-PSTX sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-KBED sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFRU sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFFH sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-PLAF sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-DRAD sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-VALLC sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PS_UVO sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PM_UVO sy-vline 
WA_CNPB_H_OBJECTS_IN_HIERARCHY_STR-AFVG_PP_UVO sy-vline      INTO ld_text SEPARATED BY SPACE.

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