ABAP Select data from SAP table TFK_ODNNR_DET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFK_ODNNR_DET
*  INTO TABLE @DATA(IT_TFK_ODNNR_DET2).
*--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_TFK_ODNNR_DET INDEX 1 INTO DATA(WA_TFK_ODNNR_DET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFK_ODNNR_DET>-MANDT = 1.
<TFK_ODNNR_DET>-LAND = 1.
<TFK_ODNNR_DET>-BUKRS = 1.
<TFK_ODNNR_DET>-BUPLA = 1.
<TFK_ODNNR_DET>-DOCCLS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFK_ODNNR_DET-VALIDFROM, sy-vline,
  WA_TFK_ODNNR_DET-VALIDTO, sy-vline,
  WA_TFK_ODNNR_DET-OBJECT, sy-vline,
  WA_TFK_ODNNR_DET-NUMGRP, sy-vline,
  WA_TFK_ODNNR_DET-NRNR, sy-vline,
  WA_TFK_ODNNR_DET-TOYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFK_ODNNR_DET 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_TFK_ODNNR_DET 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_TFK_ODNNR_DET INTO WA_TFK_ODNNR_DET.


*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 GJAHR, internal->external for field TOYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TFK_ODNNR_DET-TOYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFK_ODNNR_DET-TOYEAR.
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_TFK_ODNNR_DET_STR, 
MANDT TYPE STRING,
LAND TYPE STRING,
BUKRS TYPE STRING,
BUPLA TYPE STRING,
DOCCLS TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
OBJECT TYPE STRING,
NUMGRP TYPE STRING,
NRNR TYPE STRING,
TOYEAR TYPE STRING,
ODNFORMAT TYPE STRING,
X_CHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFK_ODNNR_DET_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_TFK_ODNNR_DET_STR-MANDT sy-vline 
WA_TFK_ODNNR_DET_STR-LAND sy-vline 
WA_TFK_ODNNR_DET_STR-BUKRS sy-vline 
WA_TFK_ODNNR_DET_STR-BUPLA sy-vline 
WA_TFK_ODNNR_DET_STR-DOCCLS sy-vline 
WA_TFK_ODNNR_DET_STR-VALIDFROM sy-vline 
WA_TFK_ODNNR_DET_STR-VALIDTO sy-vline 
WA_TFK_ODNNR_DET_STR-OBJECT sy-vline 
WA_TFK_ODNNR_DET_STR-NUMGRP sy-vline 
WA_TFK_ODNNR_DET_STR-NRNR sy-vline 
WA_TFK_ODNNR_DET_STR-TOYEAR sy-vline 
WA_TFK_ODNNR_DET_STR-ODNFORMAT sy-vline 
WA_TFK_ODNNR_DET_STR-X_CHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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