ABAP Select data from SAP table TKKVFAART into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKKVFAART
*  INTO TABLE @DATA(IT_TKKVFAART2).
*--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_TKKVFAART INDEX 1 INTO DATA(WA_TKKVFAART2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKKVFAART>-MANDT = 1.
<TKKVFAART>-VKTYP = 1.
<TKKVFAART>-FAART = 1.
<TKKVFAART>-ABGOP = 1.
<TKKVFAART>-AUGOP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKKVFAART-STATOP, sy-vline,
  WA_TKKVFAART-LASTOP, sy-vline,
  WA_TKKVFAART-STUNDOP, sy-vline,
  WA_TKKVFAART-NEG_LINES_IGNORE, sy-vline,
  WA_TKKVFAART-NEG_SUMS_ACCEPT, sy-vline,
  WA_TKKVFAART-XTAUS_SCHED_EXPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKKVFAART 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_TKKVFAART 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_TKKVFAART INTO WA_TKKVFAART.


*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_TKKVFAART_STR, 
MANDT TYPE STRING,
VKTYP TYPE STRING,
FAART TYPE STRING,
ABGOP TYPE STRING,
AUGOP TYPE STRING,
STATOP TYPE STRING,
LASTOP TYPE STRING,
STUNDOP TYPE STRING,
NEG_LINES_IGNORE TYPE STRING,
NEG_SUMS_ACCEPT TYPE STRING,
XTAUS_SCHED_EXPL TYPE STRING,
FORMKEY TYPE STRING,
NEG_SUMS_FORMKEY TYPE STRING,
GAPSOK TYPE STRING,
FAKLFZ TYPE STRING,
ARCLFZ TYPE STRING,
XALL_PYMET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKKVFAART_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_TKKVFAART_STR-MANDT sy-vline 
WA_TKKVFAART_STR-VKTYP sy-vline 
WA_TKKVFAART_STR-FAART sy-vline 
WA_TKKVFAART_STR-ABGOP sy-vline 
WA_TKKVFAART_STR-AUGOP sy-vline 
WA_TKKVFAART_STR-STATOP sy-vline 
WA_TKKVFAART_STR-LASTOP sy-vline 
WA_TKKVFAART_STR-STUNDOP sy-vline 
WA_TKKVFAART_STR-NEG_LINES_IGNORE sy-vline 
WA_TKKVFAART_STR-NEG_SUMS_ACCEPT sy-vline 
WA_TKKVFAART_STR-XTAUS_SCHED_EXPL sy-vline 
WA_TKKVFAART_STR-FORMKEY sy-vline 
WA_TKKVFAART_STR-NEG_SUMS_FORMKEY sy-vline 
WA_TKKVFAART_STR-GAPSOK sy-vline 
WA_TKKVFAART_STR-FAKLFZ sy-vline 
WA_TKKVFAART_STR-ARCLFZ sy-vline 
WA_TKKVFAART_STR-XALL_PYMET sy-vline      INTO ld_text SEPARATED BY SPACE.

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