ABAP Select data from SAP table EHFNDS_MWB_MAP_BOM_NODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHFNDS_MWB_MAP_BOM_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 EHFNDS_MWB_MAP_BOM_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 EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_NODE TYPE STANDARD TABLE OF EHFNDS_MWB_MAP_BOM_NODE,
      WA_EHFNDS_MWB_MAP_BOM_NODE TYPE EHFNDS_MWB_MAP_BOM_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: <EHFNDS_MWB_MAP_BOM_NODE> TYPE EHFNDS_MWB_MAP_BOM_NODE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_MWB_MAP_BOM_NODE
*  INTO TABLE @DATA(IT_EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_NODE INDEX 1 INTO DATA(WA_EHFNDS_MWB_MAP_BOM_NODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_MWB_MAP_BOM_NODE>-KEY = 1.
<EHFNDS_MWB_MAP_BOM_NODE>-PARENT_KEY = 1.
<EHFNDS_MWB_MAP_BOM_NODE>-ROOT_KEY = 1.
<EHFNDS_MWB_MAP_BOM_NODE>-NAME = 1.
<EHFNDS_MWB_MAP_BOM_NODE>-NODE_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_MWB_MAP_BOM_NODE-PARENT_NODE_KEY, sy-vline,
  WA_EHFNDS_MWB_MAP_BOM_NODE-BO_NAME, sy-vline,
  WA_EHFNDS_MWB_MAP_BOM_NODE-IS_LEAF, sy-vline,
  WA_EHFNDS_MWB_MAP_BOM_NODE-IS_EXPANDED, sy-vline,
  WA_EHFNDS_MWB_MAP_BOM_NODE-ICON, sy-vline,
  WA_EHFNDS_MWB_MAP_BOM_NODE-DESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_NODE INTO WA_EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_NODE_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
NAME TYPE STRING,
NODE_KEY TYPE STRING,
PARENT_NODE_KEY TYPE STRING,
BO_NAME TYPE STRING,
IS_LEAF TYPE STRING,
IS_EXPANDED TYPE STRING,
ICON TYPE STRING,
DESCRIPTION TYPE STRING,
DATATYPE TYPE STRING,
PATH TYPE STRING,
PATH_TABLE TYPE STRING,
REF_BO_KEY TYPE STRING,
REF_NODE_KEY TYPE STRING,
ORIGIN_NODE_KEY TYPE STRING,
CELL_DESIGN TYPE STRING,
ORIGIN_BO_KEY TYPE STRING,
ASSOC_PARENT_TO_NODE TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
ORIGIN_BO_KEY TYPE STRING,
ASSOC_TYPE TYPE STRING,
ASSOC_CAT TYPE STRING,
ASSOC_NAME TYPE STRING,
ASSOC_ESR_NAME TYPE STRING,
ASSOC_GENIL_NAME TYPE STRING,
ASSOC_CLASS TYPE STRING,
SP_MAPPER_CLASS TYPE STRING,
SOURCE_NODE_KEY TYPE STRING,
TARGET_NODE_KEY TYPE STRING,
ATTR_NAME_SOURCE TYPE STRING,
CARDINALITY TYPE STRING,
PARAM_DATA_TYPE TYPE STRING,
ESR_PARAM_DATA_T TYPE STRING,
ASSOC_RESOLVE TYPE STRING,
ASSOC_MODELED TYPE STRING,
USE_PROXY_TYPE TYPE STRING,
QUERY_KEY TYPE STRING,
SECKEYNAME TYPE STRING,
CHANGE_RESOLVE TYPE STRING,
ALIAS_RETRIEVE TYPE STRING,
ALIAS_RETRIEVE_S TYPE STRING,
ALIAS_DELETE TYPE STRING,
ALIAS_DELETE_S TYPE STRING,
TD_CONTAINER TYPE STRING,
TD_CONTAINER_VAR TYPE STRING,
DESCRIPTION TYPE STRING,
ASSOC_KEY_PARENT_TO_NODE TYPE STRING,
ASSOC_NAME_PARENT_TO_NODE TYPE STRING,
ASSOC_PATH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_MWB_MAP_BOM_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_EHFNDS_MWB_MAP_BOM_NODE_STR-KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PARENT_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ROOT_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-NAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PARENT_NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-BO_NAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-IS_LEAF sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-IS_EXPANDED sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ICON sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-DESCRIPTION sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-DATATYPE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PATH sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PATH_TABLE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-REF_BO_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-REF_NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ORIGIN_NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-CELL_DESIGN sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ORIGIN_BO_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_PARENT_TO_NODE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PARENT_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ROOT_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ORIGIN_BO_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_TYPE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_CAT sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_NAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_ESR_NAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_GENIL_NAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_CLASS sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-SP_MAPPER_CLASS sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-SOURCE_NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-TARGET_NODE_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ATTR_NAME_SOURCE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-CARDINALITY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-PARAM_DATA_TYPE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ESR_PARAM_DATA_T sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_RESOLVE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_MODELED sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-USE_PROXY_TYPE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-QUERY_KEY sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-SECKEYNAME sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-CHANGE_RESOLVE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ALIAS_RETRIEVE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ALIAS_RETRIEVE_S sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ALIAS_DELETE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ALIAS_DELETE_S sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-TD_CONTAINER sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-TD_CONTAINER_VAR sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-DESCRIPTION sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_KEY_PARENT_TO_NODE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_NAME_PARENT_TO_NODE sy-vline 
WA_EHFNDS_MWB_MAP_BOM_NODE_STR-ASSOC_PATH sy-vline      INTO ld_text SEPARATED BY SPACE.

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