ABAP Select data from SAP table VTTKD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VTTKD 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 VTTKD. 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 VTTKD 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_VTTKD TYPE STANDARD TABLE OF VTTKD,
      WA_VTTKD TYPE VTTKD,
      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: <VTTKD> TYPE VTTKD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTTKD
*  INTO TABLE @DATA(IT_VTTKD2).
*--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_VTTKD INDEX 1 INTO DATA(WA_VTTKD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTTKD>-TKNUM_OLD = 1.
<VTTKD>-TPNUML = 1.
<VTTKD>-TPRFOL = 1.
<VTTKD>-TSNUML = 1.
<VTTKD>-TSRFOL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTTKD-SORT, sy-vline,
  WA_VTTKD-PROFIDNETZ, sy-vline,
  WA_VTTKD-TXDIL, sy-vline,
  WA_VTTKD-TXROU, sy-vline,
  WA_VTTKD-EXTNO, sy-vline,
  WA_VTTKD-UPDTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTTKD 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_VTTKD 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_VTTKD INTO WA_VTTKD.


*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 ALPHA, internal->external for field TKNUM_OLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-TKNUM_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-TKNUM_OLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TKNUM_TMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-TKNUM_TMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-TKNUM_TMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field TRMTYP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-TRMTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-TRMTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /BEV1/RP_WEIGTH_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-/BEV1/RP_WEIGTH_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-/BEV1/RP_WEIGTH_U.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /BEV1/RPKAPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-/BEV1/RPKAPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-/BEV1/RPKAPUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /BEV1/RPVOL_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-/BEV1/RPVOL_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-/BEV1/RPVOL_U.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /BEV1/RPMASS_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VTTKD-/BEV1/RPMASS_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTKD-/BEV1/RPMASS_U.
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_VTTKD_STR, 
TKNUM_OLD TYPE STRING,
TPNUML TYPE STRING,
TPRFOL TYPE STRING,
TSNUML TYPE STRING,
TSRFOL TYPE STRING,
SORT TYPE STRING,
PROFIDNETZ TYPE STRING,
TXDIL TYPE STRING,
TXROU TYPE STRING,
EXTNO TYPE STRING,
UPDTX TYPE STRING,
UPDTE TYPE STRING,
UPDNA TYPE STRING,
UPDVE TYPE STRING,
UPDPA TYPE STRING,
UPDKZ TYPE STRING,
AENDERUNG TYPE STRING,
TKNUM_TMP TYPE STRING,
TXTSP TYPE STRING,
ICON_TNDRST TYPE STRING,
TRMTYP TYPE STRING,
TRATY TYPE STRING,
ADRNR TYPE STRING,
ADRDA TYPE STRING,
TNDR_REST TYPE STRING,
SPLFLG TYPE STRING,
TRXFLAG TYPE STRING,
KZ_HULFG TYPE STRING,
BTGWD TYPE STRING,
VOLMD TYPE STRING,
GSGWD TYPE STRING,
TSEGINIT TYPE STRING,
/BEV1/RPNUTZLAST TYPE STRING,
/BEV1/RP_WEIGTH_U TYPE STRING,
/BEV1/RPFRKAPA TYPE STRING,
/BEV1/RPMNGTR TYPE STRING,
/BEV1/RPKAPTR TYPE STRING,
/BEV1/RPKAPUNIT TYPE STRING,
/BEV1/RPAUSLA TYPE STRING,
/BEV1/RPGEWNL TYPE STRING,
/BEV1/RPGSTATUS TYPE STRING,
/BEV1/RPKUNDEN TYPE STRING,
/BEV1/RPMENGE TYPE STRING,
/BEV1/RPVOL_U TYPE STRING,
/BEV1/RPAGEW TYPE STRING,
/BEV1/RPMASS_U TYPE STRING,
/BEV1/RPF1NA1 TYPE STRING,
/BEV1/RPF2NA1 TYPE STRING,
/BEV1/RPMOBEZ TYPE STRING,
/BEV1/RPAHBEZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTTKD_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_VTTKD_STR-TKNUM_OLD sy-vline 
WA_VTTKD_STR-TPNUML sy-vline 
WA_VTTKD_STR-TPRFOL sy-vline 
WA_VTTKD_STR-TSNUML sy-vline 
WA_VTTKD_STR-TSRFOL sy-vline 
WA_VTTKD_STR-SORT sy-vline 
WA_VTTKD_STR-PROFIDNETZ sy-vline 
WA_VTTKD_STR-TXDIL sy-vline 
WA_VTTKD_STR-TXROU sy-vline 
WA_VTTKD_STR-EXTNO sy-vline 
WA_VTTKD_STR-UPDTX sy-vline 
WA_VTTKD_STR-UPDTE sy-vline 
WA_VTTKD_STR-UPDNA sy-vline 
WA_VTTKD_STR-UPDVE sy-vline 
WA_VTTKD_STR-UPDPA sy-vline 
WA_VTTKD_STR-UPDKZ sy-vline 
WA_VTTKD_STR-AENDERUNG sy-vline 
WA_VTTKD_STR-TKNUM_TMP sy-vline 
WA_VTTKD_STR-TXTSP sy-vline 
WA_VTTKD_STR-ICON_TNDRST sy-vline 
WA_VTTKD_STR-TRMTYP sy-vline 
WA_VTTKD_STR-TRATY sy-vline 
WA_VTTKD_STR-ADRNR sy-vline 
WA_VTTKD_STR-ADRDA sy-vline 
WA_VTTKD_STR-TNDR_REST sy-vline 
WA_VTTKD_STR-SPLFLG sy-vline 
WA_VTTKD_STR-TRXFLAG sy-vline 
WA_VTTKD_STR-KZ_HULFG sy-vline 
WA_VTTKD_STR-BTGWD sy-vline 
WA_VTTKD_STR-VOLMD sy-vline 
WA_VTTKD_STR-GSGWD sy-vline 
WA_VTTKD_STR-TSEGINIT sy-vline 
WA_VTTKD_STR-/BEV1/RPNUTZLAST sy-vline 
WA_VTTKD_STR-/BEV1/RP_WEIGTH_U sy-vline 
WA_VTTKD_STR-/BEV1/RPFRKAPA sy-vline 
WA_VTTKD_STR-/BEV1/RPMNGTR sy-vline 
WA_VTTKD_STR-/BEV1/RPKAPTR sy-vline 
WA_VTTKD_STR-/BEV1/RPKAPUNIT sy-vline 
WA_VTTKD_STR-/BEV1/RPAUSLA sy-vline 
WA_VTTKD_STR-/BEV1/RPGEWNL sy-vline 
WA_VTTKD_STR-/BEV1/RPGSTATUS sy-vline 
WA_VTTKD_STR-/BEV1/RPKUNDEN sy-vline 
WA_VTTKD_STR-/BEV1/RPMENGE sy-vline 
WA_VTTKD_STR-/BEV1/RPVOL_U sy-vline 
WA_VTTKD_STR-/BEV1/RPAGEW sy-vline 
WA_VTTKD_STR-/BEV1/RPMASS_U sy-vline 
WA_VTTKD_STR-/BEV1/RPF1NA1 sy-vline 
WA_VTTKD_STR-/BEV1/RPF2NA1 sy-vline 
WA_VTTKD_STR-/BEV1/RPMOBEZ sy-vline 
WA_VTTKD_STR-/BEV1/RPAHBEZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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