ABAP Select data from SAP table TCO41 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TCO41 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 TCO41. 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 TCO41 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_TCO41 TYPE STANDARD TABLE OF TCO41,
      WA_TCO41 TYPE TCO41,
      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: <TCO41> TYPE TCO41.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TCO41.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TCO41
  INTO TABLE IT_TCO41.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCO41
*  INTO TABLE @DATA(IT_TCO412).
*--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_TCO41 INDEX 1 INTO DATA(WA_TCO412).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TCO41 ASSIGNING <TCO41>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCO41>-MANDT = 1.
<TCO41>-WERKS = 1.
<TCO41>-AUART = 1.
<TCO41>-STEUS = 1.
<TCO41>-PLNME = 1.

ENDLOOP.

LOOP AT IT_TCO41 INTO WA_TCO41.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCO41-VERWE, sy-vline,
  WA_TCO41-UMREN, sy-vline,
  WA_TCO41-UMREZ, sy-vline,
  WA_TCO41-BMSCH, sy-vline,
  WA_TCO41-ARBPL, sy-vline,
  WA_TCO41-LTXA1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCO41 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_TCO41 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_TCO41 INTO WA_TCO41.


*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 CUNIT, internal->external for field PLNME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TCO41-PLNME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCO41-PLNME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field IVORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_TCO41-IVORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCO41-IVORNR.
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_TCO41_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
AUART TYPE STRING,
STEUS TYPE STRING,
PLNME TYPE STRING,
VERWE TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
BMSCH TYPE STRING,
ARBPL TYPE STRING,
LTXA1 TYPE STRING,
ARBID TYPE STRING,
IVORNR TYPE STRING,
EKGRP TYPE STRING,
MATKL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCO41_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_TCO41_STR-MANDT sy-vline 
WA_TCO41_STR-WERKS sy-vline 
WA_TCO41_STR-AUART sy-vline 
WA_TCO41_STR-STEUS sy-vline 
WA_TCO41_STR-PLNME sy-vline 
WA_TCO41_STR-VERWE sy-vline 
WA_TCO41_STR-UMREN sy-vline 
WA_TCO41_STR-UMREZ sy-vline 
WA_TCO41_STR-BMSCH sy-vline 
WA_TCO41_STR-ARBPL sy-vline 
WA_TCO41_STR-LTXA1 sy-vline 
WA_TCO41_STR-ARBID sy-vline 
WA_TCO41_STR-IVORNR sy-vline 
WA_TCO41_STR-EKGRP sy-vline 
WA_TCO41_STR-MATKL sy-vline      INTO ld_text SEPARATED BY SPACE.

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