ABAP Select data from SAP table WDY_VC_CO_NODE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDY_VC_CO_NODE
*  INTO TABLE @DATA(IT_WDY_VC_CO_NODE2).
*--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_WDY_VC_CO_NODE INDEX 1 INTO DATA(WA_WDY_VC_CO_NODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDY_VC_CO_NODE>-TREE_NODEKEY = 1.
<WDY_VC_CO_NODE>-TREE_RELATKEY = 1.
<WDY_VC_CO_NODE>-VIZUALIZED = 1.
<WDY_VC_CO_NODE>-REF_API_CONTEXT_ELEMENT = 1.
<WDY_VC_CO_NODE>-PARENT_NODE_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDY_VC_CO_NODE-DISPLAY_NAME, sy-vline,
  WA_WDY_VC_CO_NODE-LABEL, sy-vline,
  WA_WDY_VC_CO_NODE-NODE_NAME, sy-vline,
  WA_WDY_VC_CO_NODE-NODE_TYPE, sy-vline,
  WA_WDY_VC_CO_NODE-NODE_POSITION, sy-vline,
  WA_WDY_VC_CO_NODE-IS_INTF_IMPLEMENTATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDY_VC_CO_NODE 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_WDY_VC_CO_NODE 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_WDY_VC_CO_NODE INTO WA_WDY_VC_CO_NODE.


*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_WDY_VC_CO_NODE_STR, 
TREE_NODEKEY TYPE STRING,
TREE_RELATKEY TYPE STRING,
VIZUALIZED TYPE STRING,
REF_API_CONTEXT_ELEMENT TYPE STRING,
PARENT_NODE_NAME TYPE STRING,
DISPLAY_NAME TYPE STRING,
LABEL TYPE STRING,
NODE_NAME TYPE STRING,
NODE_TYPE TYPE STRING,
NODE_POSITION TYPE STRING,
IS_INTF_IMPLEMENTATION TYPE STRING,
IS_INTF_ITEM TYPE STRING,
IS_INPUT_ELEMENT TYPE STRING,
ENHNAME TYPE STRING,
DDIC_STRUCTURE TYPE STRING,
SUPPLY_FUNCTION TYPE STRING,
SUPPLY_FUNC_NAME TYPE STRING,
COLLECTION_TYPE TYPE STRING,
CARDINALITY TYPE STRING,
SELECTION TYPE STRING,
SINGLETON TYPE STRING,
SINGLETON_ORIGIN TYPE STRING,
INIT_LEAD_SELECT TYPE STRING,
ATTRIBUTE_NAME TYPE STRING,
ATTRIBUTE_TYPE TYPE STRING,
ATTRIB_POSITION TYPE STRING,
READ_ONLY TYPE STRING,
DEFAULT_VALUE TYPE STRING,
ABAP_TYPE TYPE STRING,
ABAP_TYPING TYPE STRING,
HAS_VALUE_HELP TYPE STRING,
VALUE_HELP_ID TYPE STRING,
VALUE_HELP_TYPE TYPE STRING,
VALUE_HELP_MODE TYPE STRING,
PRIMARY TYPE STRING,
NULLABLE TYPE STRING,
ATTRIBUTE_FORMAT_PROP TYPE STRING,
NULL_AS_BLANK TYPE STRING,
SIGN_POS TYPE STRING,
CONDENSE TYPE STRING,
DATE_FORMAT TYPE STRING,
SHORT_TIME TYPE STRING,
MAPPING TYPE STRING,
MAPPING_TYPE_NODE TYPE STRING,
MAPPING_TYPE_ATTR TYPE STRING,
MAPPING_PATH TYPE STRING,
REPEATED_NODE_REF TYPE STRING,
REPEATED_NODE_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDY_VC_CO_NODE_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_WDY_VC_CO_NODE_STR-TREE_NODEKEY sy-vline 
WA_WDY_VC_CO_NODE_STR-TREE_RELATKEY sy-vline 
WA_WDY_VC_CO_NODE_STR-VIZUALIZED sy-vline 
WA_WDY_VC_CO_NODE_STR-REF_API_CONTEXT_ELEMENT sy-vline 
WA_WDY_VC_CO_NODE_STR-PARENT_NODE_NAME sy-vline 
WA_WDY_VC_CO_NODE_STR-DISPLAY_NAME sy-vline 
WA_WDY_VC_CO_NODE_STR-LABEL sy-vline 
WA_WDY_VC_CO_NODE_STR-NODE_NAME sy-vline 
WA_WDY_VC_CO_NODE_STR-NODE_TYPE sy-vline 
WA_WDY_VC_CO_NODE_STR-NODE_POSITION sy-vline 
WA_WDY_VC_CO_NODE_STR-IS_INTF_IMPLEMENTATION sy-vline 
WA_WDY_VC_CO_NODE_STR-IS_INTF_ITEM sy-vline 
WA_WDY_VC_CO_NODE_STR-IS_INPUT_ELEMENT sy-vline 
WA_WDY_VC_CO_NODE_STR-ENHNAME sy-vline 
WA_WDY_VC_CO_NODE_STR-DDIC_STRUCTURE sy-vline 
WA_WDY_VC_CO_NODE_STR-SUPPLY_FUNCTION sy-vline 
WA_WDY_VC_CO_NODE_STR-SUPPLY_FUNC_NAME sy-vline 
WA_WDY_VC_CO_NODE_STR-COLLECTION_TYPE sy-vline 
WA_WDY_VC_CO_NODE_STR-CARDINALITY sy-vline 
WA_WDY_VC_CO_NODE_STR-SELECTION sy-vline 
WA_WDY_VC_CO_NODE_STR-SINGLETON sy-vline 
WA_WDY_VC_CO_NODE_STR-SINGLETON_ORIGIN sy-vline 
WA_WDY_VC_CO_NODE_STR-INIT_LEAD_SELECT sy-vline 
WA_WDY_VC_CO_NODE_STR-ATTRIBUTE_NAME sy-vline 
WA_WDY_VC_CO_NODE_STR-ATTRIBUTE_TYPE sy-vline 
WA_WDY_VC_CO_NODE_STR-ATTRIB_POSITION sy-vline 
WA_WDY_VC_CO_NODE_STR-READ_ONLY sy-vline 
WA_WDY_VC_CO_NODE_STR-DEFAULT_VALUE sy-vline 
WA_WDY_VC_CO_NODE_STR-ABAP_TYPE sy-vline 
WA_WDY_VC_CO_NODE_STR-ABAP_TYPING sy-vline 
WA_WDY_VC_CO_NODE_STR-HAS_VALUE_HELP sy-vline 
WA_WDY_VC_CO_NODE_STR-VALUE_HELP_ID sy-vline 
WA_WDY_VC_CO_NODE_STR-VALUE_HELP_TYPE sy-vline 
WA_WDY_VC_CO_NODE_STR-VALUE_HELP_MODE sy-vline 
WA_WDY_VC_CO_NODE_STR-PRIMARY sy-vline 
WA_WDY_VC_CO_NODE_STR-NULLABLE sy-vline 
WA_WDY_VC_CO_NODE_STR-ATTRIBUTE_FORMAT_PROP sy-vline 
WA_WDY_VC_CO_NODE_STR-NULL_AS_BLANK sy-vline 
WA_WDY_VC_CO_NODE_STR-SIGN_POS sy-vline 
WA_WDY_VC_CO_NODE_STR-CONDENSE sy-vline 
WA_WDY_VC_CO_NODE_STR-DATE_FORMAT sy-vline 
WA_WDY_VC_CO_NODE_STR-SHORT_TIME sy-vline 
WA_WDY_VC_CO_NODE_STR-MAPPING sy-vline 
WA_WDY_VC_CO_NODE_STR-MAPPING_TYPE_NODE sy-vline 
WA_WDY_VC_CO_NODE_STR-MAPPING_TYPE_ATTR sy-vline 
WA_WDY_VC_CO_NODE_STR-MAPPING_PATH sy-vline 
WA_WDY_VC_CO_NODE_STR-REPEATED_NODE_REF sy-vline 
WA_WDY_VC_CO_NODE_STR-REPEATED_NODE_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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