ABAP Select data from SAP table IPM_TREE_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPM_TREE_ITEM
*  INTO TABLE @DATA(IT_IPM_TREE_ITEM2).
*--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_IPM_TREE_ITEM INDEX 1 INTO DATA(WA_IPM_TREE_ITEM2).


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

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

ENDLOOP.

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

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


*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_IPM_TREE_ITEM_STR, 
TEXT TYPE STRING,
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,
MSGTY TYPE STRING,
INHERITERRORLEVEL TYPE STRING,
LEVEL TYPE STRING,
MSG TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MSGV1_SRC TYPE STRING,
MSGV2_SRC TYPE STRING,
MSGV3_SRC TYPE STRING,
MSGV4_SRC TYPE STRING,
DETLEVEL TYPE STRING,
PROBCLASS TYPE STRING,
ALSORT TYPE STRING,
TIME_STMP TYPE STRING,
MSG_COUNT TYPE STRING,
CONTEXT TYPE STRING,
TABNAME TYPE STRING,
VALUE TYPE STRING,
PARAMS TYPE STRING,
T_PAR TYPE STRING,
CALLBACK TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
USEREXITT TYPE STRING,
ALTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPM_TREE_ITEM_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_IPM_TREE_ITEM_STR-TEXT sy-vline 
WA_IPM_TREE_ITEM_STR-NODE_KEY sy-vline 
WA_IPM_TREE_ITEM_STR-RELATKEY sy-vline 
WA_IPM_TREE_ITEM_STR-RELATSHIP sy-vline 
WA_IPM_TREE_ITEM_STR-HIDDEN sy-vline 
WA_IPM_TREE_ITEM_STR-DISABLED sy-vline 
WA_IPM_TREE_ITEM_STR-ISFOLDER sy-vline 
WA_IPM_TREE_ITEM_STR-N_IMAGE sy-vline 
WA_IPM_TREE_ITEM_STR-EXP_IMAGE sy-vline 
WA_IPM_TREE_ITEM_STR-STYLE sy-vline 
WA_IPM_TREE_ITEM_STR-LAST_HITEM sy-vline 
WA_IPM_TREE_ITEM_STR-NO_BRANCH sy-vline 
WA_IPM_TREE_ITEM_STR-EXPANDER sy-vline 
WA_IPM_TREE_ITEM_STR-DRAGDROPID sy-vline 
WA_IPM_TREE_ITEM_STR-MSGTY sy-vline 
WA_IPM_TREE_ITEM_STR-INHERITERRORLEVEL sy-vline 
WA_IPM_TREE_ITEM_STR-LEVEL sy-vline 
WA_IPM_TREE_ITEM_STR-MSG sy-vline 
WA_IPM_TREE_ITEM_STR-MSGTY sy-vline 
WA_IPM_TREE_ITEM_STR-MSGID sy-vline 
WA_IPM_TREE_ITEM_STR-MSGNO sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV1 sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV2 sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV3 sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV4 sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV1_SRC sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV2_SRC sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV3_SRC sy-vline 
WA_IPM_TREE_ITEM_STR-MSGV4_SRC sy-vline 
WA_IPM_TREE_ITEM_STR-DETLEVEL sy-vline 
WA_IPM_TREE_ITEM_STR-PROBCLASS sy-vline 
WA_IPM_TREE_ITEM_STR-ALSORT sy-vline 
WA_IPM_TREE_ITEM_STR-TIME_STMP sy-vline 
WA_IPM_TREE_ITEM_STR-MSG_COUNT sy-vline 
WA_IPM_TREE_ITEM_STR-CONTEXT sy-vline 
WA_IPM_TREE_ITEM_STR-TABNAME sy-vline 
WA_IPM_TREE_ITEM_STR-VALUE sy-vline 
WA_IPM_TREE_ITEM_STR-PARAMS sy-vline 
WA_IPM_TREE_ITEM_STR-T_PAR sy-vline 
WA_IPM_TREE_ITEM_STR-CALLBACK sy-vline 
WA_IPM_TREE_ITEM_STR-USEREXITP sy-vline 
WA_IPM_TREE_ITEM_STR-USEREXITF sy-vline 
WA_IPM_TREE_ITEM_STR-USEREXITT sy-vline 
WA_IPM_TREE_ITEM_STR-ALTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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