ABAP Select data from SAP table FIEHTREESNODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIEHTREESNODE
*  INTO TABLE @DATA(IT_FIEHTREESNODE2).
*--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_FIEHTREESNODE INDEX 1 INTO DATA(WA_FIEHTREESNODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIEHTREESNODE>-NODE_KEY = 1.
<FIEHTREESNODE>-RELATKEY = 1.
<FIEHTREESNODE>-RELATSHIP = 1.
<FIEHTREESNODE>-HIDDEN = 1.
<FIEHTREESNODE>-DISABLED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIEHTREESNODE-ISFOLDER, sy-vline,
  WA_FIEHTREESNODE-N_IMAGE, sy-vline,
  WA_FIEHTREESNODE-EXP_IMAGE, sy-vline,
  WA_FIEHTREESNODE-STYLE, sy-vline,
  WA_FIEHTREESNODE-LAST_HITEM, sy-vline,
  WA_FIEHTREESNODE-NO_BRANCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIEHTREESNODE 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_FIEHTREESNODE 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_FIEHTREESNODE INTO WA_FIEHTREESNODE.


*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 OBJECTID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIEHTREESNODE-OBJECTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIEHTREESNODE-OBJECTID.
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_FIEHTREESNODE_STR, 
NODE_KEY TYPE STRING,
RELATKEY TYPE STRING,
RELATSHIP TYPE STRING,
HIDDEN TYPE STRING,
DISABLED TYPE STRING,
ISFOLDER TYPE STRING,
N_IMAGE TYPE STRING,
EXP_IMAGE TYPE STRING,
STYLE TYPE STRING,
LAST_HITEM TYPE STRING,
NO_BRANCH TYPE STRING,
EXPANDER TYPE STRING,
DRAGDROPID TYPE STRING,
COMPONENT TYPE STRING,
OBJECTID TYPE STRING,
ITEMNO TYPE STRING,
EVENT TYPE STRING,
BUKRS TYPE STRING,
OBJID TYPE STRING,
SUBID TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNR TYPE STRING,
OBJTXT TYPE STRING,
LOGHANDLE TYPE STRING,
STATUS TYPE STRING,
NODETYPE TYPE STRING,
METHOD TYPE STRING,
RESTART TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIEHTREESNODE_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_FIEHTREESNODE_STR-NODE_KEY sy-vline 
WA_FIEHTREESNODE_STR-RELATKEY sy-vline 
WA_FIEHTREESNODE_STR-RELATSHIP sy-vline 
WA_FIEHTREESNODE_STR-HIDDEN sy-vline 
WA_FIEHTREESNODE_STR-DISABLED sy-vline 
WA_FIEHTREESNODE_STR-ISFOLDER sy-vline 
WA_FIEHTREESNODE_STR-N_IMAGE sy-vline 
WA_FIEHTREESNODE_STR-EXP_IMAGE sy-vline 
WA_FIEHTREESNODE_STR-STYLE sy-vline 
WA_FIEHTREESNODE_STR-LAST_HITEM sy-vline 
WA_FIEHTREESNODE_STR-NO_BRANCH sy-vline 
WA_FIEHTREESNODE_STR-EXPANDER sy-vline 
WA_FIEHTREESNODE_STR-DRAGDROPID sy-vline 
WA_FIEHTREESNODE_STR-COMPONENT sy-vline 
WA_FIEHTREESNODE_STR-OBJECTID sy-vline 
WA_FIEHTREESNODE_STR-ITEMNO sy-vline 
WA_FIEHTREESNODE_STR-EVENT sy-vline 
WA_FIEHTREESNODE_STR-BUKRS sy-vline 
WA_FIEHTREESNODE_STR-OBJID sy-vline 
WA_FIEHTREESNODE_STR-SUBID sy-vline 
WA_FIEHTREESNODE_STR-MSGID sy-vline 
WA_FIEHTREESNODE_STR-MSGTY sy-vline 
WA_FIEHTREESNODE_STR-MSGNR sy-vline 
WA_FIEHTREESNODE_STR-OBJTXT sy-vline 
WA_FIEHTREESNODE_STR-LOGHANDLE sy-vline 
WA_FIEHTREESNODE_STR-STATUS sy-vline 
WA_FIEHTREESNODE_STR-NODETYPE sy-vline 
WA_FIEHTREESNODE_STR-METHOD sy-vline 
WA_FIEHTREESNODE_STR-RESTART sy-vline 
WA_FIEHTREESNODE_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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