ABAP Select data from SAP table /PICM/S_BID_HIERARCHY_TREE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PICM/S_BID_HIERARCHY_TREE 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 /PICM/S_BID_HIERARCHY_TREE. 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 /PICM/S_BID_HIERARCHY_TREE 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_/PICM/S_BID_HIERARCHY_TREE TYPE STANDARD TABLE OF /PICM/S_BID_HIERARCHY_TREE,
      WA_/PICM/S_BID_HIERARCHY_TREE TYPE /PICM/S_BID_HIERARCHY_TREE,
      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: </PICM/S_BID_HIERARCHY_TREE> TYPE /PICM/S_BID_HIERARCHY_TREE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PICM/S_BID_HIERARCHY_TREE
  INTO TABLE IT_/PICM/S_BID_HIERARCHY_TREE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PICM/S_BID_HIERARCHY_TREE
*  INTO TABLE @DATA(IT_/PICM/S_BID_HIERARCHY_TREE2).
*--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_/PICM/S_BID_HIERARCHY_TREE INDEX 1 INTO DATA(WA_/PICM/S_BID_HIERARCHY_TREE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PICM/S_BID_HIERARCHY_TREE ASSIGNING </PICM/S_BID_HIERARCHY_TREE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PICM/S_BID_HIERARCHY_TREE>-PARENT_KEY = 1.
</PICM/S_BID_HIERARCHY_TREE>-ROW_KEY = 1.
</PICM/S_BID_HIERARCHY_TREE>-EXPANDED = 1.
</PICM/S_BID_HIERARCHY_TREE>-IS_LEAF = 1.
</PICM/S_BID_HIERARCHY_TREE>-TEXT = 1.

ENDLOOP.

LOOP AT IT_/PICM/S_BID_HIERARCHY_TREE INTO WA_/PICM/S_BID_HIERARCHY_TREE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PICM/S_BID_HIERARCHY_TREE-CHILDREN_LOADED, sy-vline,
  WA_/PICM/S_BID_HIERARCHY_TREE-IMAGE_SRC, sy-vline,
  WA_/PICM/S_BID_HIERARCHY_TREE-MP_KEY, sy-vline,
  WA_/PICM/S_BID_HIERARCHY_TREE-MP_ID, sy-vline,
  WA_/PICM/S_BID_HIERARCHY_TREE-PLAN_ID, sy-vline,
  WA_/PICM/S_BID_HIERARCHY_TREE-EXTERNAL_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PICM/S_BID_HIERARCHY_TREE 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_/PICM/S_BID_HIERARCHY_TREE 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_/PICM/S_BID_HIERARCHY_TREE INTO WA_/PICM/S_BID_HIERARCHY_TREE.


*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 ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PICM/S_BID_HIERARCHY_TREE-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PICM/S_BID_HIERARCHY_TREE-LOGSYS.
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_/PICM/S_BID_HIERARCHY_TREE_STR, 
PARENT_KEY TYPE STRING,
ROW_KEY TYPE STRING,
EXPANDED TYPE STRING,
IS_LEAF TYPE STRING,
TEXT TYPE STRING,
CHILDREN_LOADED TYPE STRING,
IMAGE_SRC TYPE STRING,
MP_KEY TYPE STRING,
MP_ID TYPE STRING,
PLAN_ID TYPE STRING,
EXTERNAL_ID TYPE STRING,
PLAN_VERSION TYPE STRING,
PLAN_DESC TYPE STRING,
OBJECT_ID TYPE STRING,
OBJECT_ID1 TYPE STRING,
OBJECT_NAME TYPE STRING,
OBJECT_LEVEL TYPE STRING,
OBJECT_TYPE TYPE STRING,
IS_LEAF_NODE TYPE STRING,
ICON TYPE STRING,
PARENT_OBJECT_ID TYPE STRING,
CATEGORY TYPE STRING,
LOGSYS TYPE STRING,
INTERNAL_KEY TYPE STRING,
INTERNAL_PARENT_KEY TYPE STRING,
INTERNAL_ROOT_KEY TYPE STRING,
MAPPED_ITEM_ID TYPE STRING,
MAPPED_ITEM_DISPLAY_ID TYPE STRING,
MAPPED_ITEM_TEXT TYPE STRING,
REFERENCE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PICM/S_BID_HIERARCHY_TREE_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_/PICM/S_BID_HIERARCHY_TREE_STR-PARENT_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-ROW_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-EXPANDED sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-IS_LEAF sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-TEXT sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-CHILDREN_LOADED sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-IMAGE_SRC sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-MP_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-MP_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-PLAN_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-EXTERNAL_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-PLAN_VERSION sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-PLAN_DESC sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-OBJECT_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-OBJECT_ID1 sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-OBJECT_NAME sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-OBJECT_LEVEL sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-OBJECT_TYPE sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-IS_LEAF_NODE sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-ICON sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-PARENT_OBJECT_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-CATEGORY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-LOGSYS sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-INTERNAL_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-INTERNAL_PARENT_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-INTERNAL_ROOT_KEY sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-MAPPED_ITEM_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-MAPPED_ITEM_DISPLAY_ID sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-MAPPED_ITEM_TEXT sy-vline 
WA_/PICM/S_BID_HIERARCHY_TREE_STR-REFERENCE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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