ABAP Select data from SAP table TFK033T into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TFK033T 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 TFK033T. 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 TFK033T 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_TFK033T TYPE STANDARD TABLE OF TFK033T,
      WA_TFK033T TYPE TFK033T,
      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: <TFK033T> TYPE TFK033T.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TFK033T.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TFK033T
  INTO TABLE IT_TFK033T.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFK033T
*  INTO TABLE @DATA(IT_TFK033T2).
*--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_TFK033T INDEX 1 INTO DATA(WA_TFK033T2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TFK033T ASSIGNING <TFK033T>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFK033T>-APPLK = 1.
<TFK033T>-BUBER = 1.
<TFK033T>-TXTK1 = 1.
<TFK033T>-TXTK2 = 1.
<TFK033T>-TXTK3 = 1.

ENDLOOP.

LOOP AT IT_TFK033T INTO WA_TFK033T.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFK033T-TXTK4, sy-vline,
  WA_TFK033T-TXTK5, sy-vline,
  WA_TFK033T-TXTF1, sy-vline,
  WA_TFK033T-TXTF2, sy-vline,
  WA_TFK033T-TXTF3, sy-vline,
  WA_TFK033T-TXTF4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFK033T 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_TFK033T 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_TFK033T INTO WA_TFK033T.


*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_TFK033T_STR, 
APPLK TYPE STRING,
BUBER TYPE STRING,
TXTK1 TYPE STRING,
TXTK2 TYPE STRING,
TXTK3 TYPE STRING,
TXTK4 TYPE STRING,
TXTK5 TYPE STRING,
TXTF1 TYPE STRING,
TXTF2 TYPE STRING,
TXTF3 TYPE STRING,
TXTF4 TYPE STRING,
TXTF5 TYPE STRING,
TXTF6 TYPE STRING,
TXTK6 TYPE STRING,
TXTK7 TYPE STRING,
TXTK8 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFK033T_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_TFK033T_STR-APPLK sy-vline 
WA_TFK033T_STR-BUBER sy-vline 
WA_TFK033T_STR-TXTK1 sy-vline 
WA_TFK033T_STR-TXTK2 sy-vline 
WA_TFK033T_STR-TXTK3 sy-vline 
WA_TFK033T_STR-TXTK4 sy-vline 
WA_TFK033T_STR-TXTK5 sy-vline 
WA_TFK033T_STR-TXTF1 sy-vline 
WA_TFK033T_STR-TXTF2 sy-vline 
WA_TFK033T_STR-TXTF3 sy-vline 
WA_TFK033T_STR-TXTF4 sy-vline 
WA_TFK033T_STR-TXTF5 sy-vline 
WA_TFK033T_STR-TXTF6 sy-vline 
WA_TFK033T_STR-TXTK6 sy-vline 
WA_TFK033T_STR-TXTK7 sy-vline 
WA_TFK033T_STR-TXTK8 sy-vline      INTO ld_text SEPARATED BY SPACE.

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