ABAP Select data from SAP table DFKK_TCO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKK_TCO
*  INTO TABLE @DATA(IT_DFKK_TCO2).
*--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_DFKK_TCO INDEX 1 INTO DATA(WA_DFKK_TCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKK_TCO>-MANDT = 1.
<DFKK_TCO>-GUID = 1.
<DFKK_TCO>-ECATT = 1.
<DFKK_TCO>-SCTXT = 1.
<DFKK_TCO>-PRTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKK_TCO-STATUS, sy-vline,
  WA_DFKK_TCO-LOGID, sy-vline,
  WA_DFKK_TCO-UNAME, sy-vline,
  WA_DFKK_TCO-EXCDT, sy-vline,
  WA_DFKK_TCO-EXCTM, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_DFKK_TCO 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_DFKK_TCO 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_DFKK_TCO INTO WA_DFKK_TCO.


*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_DFKK_TCO_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
ECATT TYPE STRING,
SCTXT TYPE STRING,
PRTXT TYPE STRING,
STATUS TYPE STRING,
LOGID TYPE STRING,
UNAME TYPE STRING,
EXCDT TYPE STRING,
EXCTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKK_TCO_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_DFKK_TCO_STR-MANDT sy-vline 
WA_DFKK_TCO_STR-GUID sy-vline 
WA_DFKK_TCO_STR-ECATT sy-vline 
WA_DFKK_TCO_STR-SCTXT sy-vline 
WA_DFKK_TCO_STR-PRTXT sy-vline 
WA_DFKK_TCO_STR-STATUS sy-vline 
WA_DFKK_TCO_STR-LOGID sy-vline 
WA_DFKK_TCO_STR-UNAME sy-vline 
WA_DFKK_TCO_STR-EXCDT sy-vline 
WA_DFKK_TCO_STR-EXCTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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