ABAP Select data from SAP table IFMPTRNODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMPTRNODE
*  INTO TABLE @DATA(IT_IFMPTRNODE2).
*--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_IFMPTRNODE INDEX 1 INTO DATA(WA_IFMPTRNODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMPTRNODE>-ID = 1.
<IFMPTRNODE>-CTR_OBJNR = 1.
<IFMPTRNODE>-POSIT = 1.
<IFMPTRNODE>-HLD_NAT = 1.
<IFMPTRNODE>-TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMPTRNODE-PARENT_ID, sy-vline,
  WA_IFMPTRNODE-PARENT_OBJ, sy-vline,
  WA_IFMPTRNODE-PARENT_POS, sy-vline,
  WA_IFMPTRNODE-PARENT_NAT, sy-vline,
  WA_IFMPTRNODE-LEFT_ID, sy-vline,
  WA_IFMPTRNODE-LEFT_OBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMPTRNODE 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_IFMPTRNODE 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_IFMPTRNODE INTO WA_IFMPTRNODE.


*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 FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_IFMPTRNODE-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMPTRNODE-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_IFMPTRNODE-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMPTRNODE-FIPEX.
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_IFMPTRNODE_STR, 
ID TYPE STRING,
CTR_OBJNR TYPE STRING,
POSIT TYPE STRING,
HLD_NAT TYPE STRING,
TYPE TYPE STRING,
PARENT_ID TYPE STRING,
PARENT_OBJ TYPE STRING,
PARENT_POS TYPE STRING,
PARENT_NAT TYPE STRING,
LEFT_ID TYPE STRING,
LEFT_OBJ TYPE STRING,
LEFT_POS TYPE STRING,
LEFT_NAT TYPE STRING,
RIGHT_OBJ TYPE STRING,
RIGHT_POS TYPE STRING,
RIGHT_NAT TYPE STRING,
CHILD_OBJ TYPE STRING,
CHILD_POS TYPE STRING,
CHILD_NAT TYPE STRING,
HIROOT_OBJ TYPE STRING,
HIROOT_POS TYPE STRING,
HIROOT_NAT TYPE STRING,
PART_ROOT TYPE STRING,
HILEVEL TYPE STRING,
ERFDAT TYPE STRING,
ERFNAME TYPE STRING,
AENDAT TYPE STRING,
AENNAME TYPE STRING,
FIPOS TYPE STRING,
FICTR TYPE STRING,
BEZEICH TYPE STRING,
FIPEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMPTRNODE_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_IFMPTRNODE_STR-ID sy-vline 
WA_IFMPTRNODE_STR-CTR_OBJNR sy-vline 
WA_IFMPTRNODE_STR-POSIT sy-vline 
WA_IFMPTRNODE_STR-HLD_NAT sy-vline 
WA_IFMPTRNODE_STR-TYPE sy-vline 
WA_IFMPTRNODE_STR-PARENT_ID sy-vline 
WA_IFMPTRNODE_STR-PARENT_OBJ sy-vline 
WA_IFMPTRNODE_STR-PARENT_POS sy-vline 
WA_IFMPTRNODE_STR-PARENT_NAT sy-vline 
WA_IFMPTRNODE_STR-LEFT_ID sy-vline 
WA_IFMPTRNODE_STR-LEFT_OBJ sy-vline 
WA_IFMPTRNODE_STR-LEFT_POS sy-vline 
WA_IFMPTRNODE_STR-LEFT_NAT sy-vline 
WA_IFMPTRNODE_STR-RIGHT_OBJ sy-vline 
WA_IFMPTRNODE_STR-RIGHT_POS sy-vline 
WA_IFMPTRNODE_STR-RIGHT_NAT sy-vline 
WA_IFMPTRNODE_STR-CHILD_OBJ sy-vline 
WA_IFMPTRNODE_STR-CHILD_POS sy-vline 
WA_IFMPTRNODE_STR-CHILD_NAT sy-vline 
WA_IFMPTRNODE_STR-HIROOT_OBJ sy-vline 
WA_IFMPTRNODE_STR-HIROOT_POS sy-vline 
WA_IFMPTRNODE_STR-HIROOT_NAT sy-vline 
WA_IFMPTRNODE_STR-PART_ROOT sy-vline 
WA_IFMPTRNODE_STR-HILEVEL sy-vline 
WA_IFMPTRNODE_STR-ERFDAT sy-vline 
WA_IFMPTRNODE_STR-ERFNAME sy-vline 
WA_IFMPTRNODE_STR-AENDAT sy-vline 
WA_IFMPTRNODE_STR-AENNAME sy-vline 
WA_IFMPTRNODE_STR-FIPOS sy-vline 
WA_IFMPTRNODE_STR-FICTR sy-vline 
WA_IFMPTRNODE_STR-BEZEICH sy-vline 
WA_IFMPTRNODE_STR-FIPEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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