ABAP Select data from SAP table CSUBCTRGNODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSUBCTRGNODE
*  INTO TABLE @DATA(IT_CSUBCTRGNODE2).
*--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_CSUBCTRGNODE INDEX 1 INTO DATA(WA_CSUBCTRGNODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSUBCTRGNODE>-MANDT = 1.
<CSUBCTRGNODE>-SUPLRMATLPLNT = 1.
<CSUBCTRGNODE>-PRODPLNTSUPPLIERCONCATENATEDID = 1.
<CSUBCTRGNODE>-MATERIALCOMPONENT = 1.
<CSUBCTRGNODE>-PLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSUBCTRGNODE-SUBCONTRACTOR, sy-vline,
  WA_CSUBCTRGNODE-PARENTNODE, sy-vline,
  WA_CSUBCTRGNODE-HIERARCHYNODELEVEL, sy-vline,
  WA_CSUBCTRGNODE-PURCHASEORDER, sy-vline,
  WA_CSUBCTRGNODE-PURCHASEORDERITEM, sy-vline,
  WA_CSUBCTRGNODE-FORMATTEDPURCHASEORDERITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSUBCTRGNODE 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_CSUBCTRGNODE 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_CSUBCTRGNODE INTO WA_CSUBCTRGNODE.


*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.

*Conversion exit MATN1, internal->external for field MATERIALCOMPONENT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSUBCTRGNODE-MATERIALCOMPONENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUBCTRGNODE-MATERIALCOMPONENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUBCONTRACTOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSUBCTRGNODE-SUBCONTRACTOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUBCTRGNODE-SUBCONTRACTOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ASSEMBLY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSUBCTRGNODE-ASSEMBLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUBCTRGNODE-ASSEMBLY.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CSUBCTRGNODE_STR, 
MANDT TYPE STRING,
SUPLRMATLPLNT TYPE STRING,
PRODPLNTSUPPLIERCONCATENATEDID TYPE STRING,
MATERIALCOMPONENT TYPE STRING,
PLANT TYPE STRING,
SUBCONTRACTOR TYPE STRING,
PARENTNODE TYPE STRING,
HIERARCHYNODELEVEL TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
FORMATTEDPURCHASEORDERITEM TYPE STRING,
SHIPMENTCOMPLETIONDATE TYPE STRING,
SHIPPINGSTATUS TYPE STRING,
ASSEMBLY TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
BATCH TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
MATERIALGROUP TYPE STRING,
STORAGELOCATION TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSUBCTRGNODE_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_CSUBCTRGNODE_STR-MANDT sy-vline 
WA_CSUBCTRGNODE_STR-SUPLRMATLPLNT sy-vline 
WA_CSUBCTRGNODE_STR-PRODPLNTSUPPLIERCONCATENATEDID sy-vline 
WA_CSUBCTRGNODE_STR-MATERIALCOMPONENT sy-vline 
WA_CSUBCTRGNODE_STR-PLANT sy-vline 
WA_CSUBCTRGNODE_STR-SUBCONTRACTOR sy-vline 
WA_CSUBCTRGNODE_STR-PARENTNODE sy-vline 
WA_CSUBCTRGNODE_STR-HIERARCHYNODELEVEL sy-vline 
WA_CSUBCTRGNODE_STR-PURCHASEORDER sy-vline 
WA_CSUBCTRGNODE_STR-PURCHASEORDERITEM sy-vline 
WA_CSUBCTRGNODE_STR-FORMATTEDPURCHASEORDERITEM sy-vline 
WA_CSUBCTRGNODE_STR-SHIPMENTCOMPLETIONDATE sy-vline 
WA_CSUBCTRGNODE_STR-SHIPPINGSTATUS sy-vline 
WA_CSUBCTRGNODE_STR-ASSEMBLY sy-vline 
WA_CSUBCTRGNODE_STR-PURCHASINGGROUP sy-vline 
WA_CSUBCTRGNODE_STR-PURCHASINGORGANIZATION sy-vline 
WA_CSUBCTRGNODE_STR-BATCH sy-vline 
WA_CSUBCTRGNODE_STR-SUPPLYINGPLANT sy-vline 
WA_CSUBCTRGNODE_STR-MATERIALGROUP sy-vline 
WA_CSUBCTRGNODE_STR-STORAGELOCATION sy-vline 
WA_CSUBCTRGNODE_STR-PURCHASINGDOCUMENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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