ABAP Select data from SAP table V_TZZKD_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TZZKD_I
*  INTO TABLE @DATA(IT_V_TZZKD_I2).
*--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_V_TZZKD_I INDEX 1 INTO DATA(WA_V_TZZKD_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TZZKD_I>-MANDT = 1.
<V_TZZKD_I>-RANTYP = 1.
<V_TZZKD_I>-KORRVORF = 1.
<V_TZZKD_I>-LFDNR = 1.
<V_TZZKD_I>-APPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TZZKD_I-ROLETYP, sy-vline,
  WA_V_TZZKD_I-ROLE, sy-vline,
  WA_V_TZZKD_I-SUBANWDG, sy-vline,
  WA_V_TZZKD_I-BRFNM, sy-vline,
  WA_V_TZZKD_I-TDCOPIES, sy-vline,
  WA_V_TZZKD_I-TDDEST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TZZKD_I 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_V_TZZKD_I 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_V_TZZKD_I INTO WA_V_TZZKD_I.


*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 SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_V_TZZKD_I-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TZZKD_I-TDDEST.
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_V_TZZKD_I_STR, 
MANDT TYPE STRING,
RANTYP TYPE STRING,
KORRVORF TYPE STRING,
LFDNR TYPE STRING,
APPL TYPE STRING,
ROLETYP TYPE STRING,
ROLE TYPE STRING,
SUBANWDG TYPE STRING,
BRFNM TYPE STRING,
TDCOPIES TYPE STRING,
TDDEST TYPE STRING,
TDNOPRINT TYPE STRING,
TDNEWID TYPE STRING,
TDDELETE TYPE STRING,
XBRFBS TYPE STRING,
XROLE TYPE STRING,
PNAME TYPE STRING,
TEXT TYPE STRING,
XKORRVORF TYPE STRING,
PASTANDORT TYPE STRING,
XAPPL TYPE STRING,
XROLETYP TYPE STRING,
TDIMMED TYPE STRING,
XBRFBSS TYPE STRING,
TDPREVIEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TZZKD_I_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_V_TZZKD_I_STR-MANDT sy-vline 
WA_V_TZZKD_I_STR-RANTYP sy-vline 
WA_V_TZZKD_I_STR-KORRVORF sy-vline 
WA_V_TZZKD_I_STR-LFDNR sy-vline 
WA_V_TZZKD_I_STR-APPL sy-vline 
WA_V_TZZKD_I_STR-ROLETYP sy-vline 
WA_V_TZZKD_I_STR-ROLE sy-vline 
WA_V_TZZKD_I_STR-SUBANWDG sy-vline 
WA_V_TZZKD_I_STR-BRFNM sy-vline 
WA_V_TZZKD_I_STR-TDCOPIES sy-vline 
WA_V_TZZKD_I_STR-TDDEST sy-vline 
WA_V_TZZKD_I_STR-TDNOPRINT sy-vline 
WA_V_TZZKD_I_STR-TDNEWID sy-vline 
WA_V_TZZKD_I_STR-TDDELETE sy-vline 
WA_V_TZZKD_I_STR-XBRFBS sy-vline 
WA_V_TZZKD_I_STR-XROLE sy-vline 
WA_V_TZZKD_I_STR-PNAME sy-vline 
WA_V_TZZKD_I_STR-TEXT sy-vline 
WA_V_TZZKD_I_STR-XKORRVORF sy-vline 
WA_V_TZZKD_I_STR-PASTANDORT sy-vline 
WA_V_TZZKD_I_STR-XAPPL sy-vline 
WA_V_TZZKD_I_STR-XROLETYP sy-vline 
WA_V_TZZKD_I_STR-TDIMMED sy-vline 
WA_V_TZZKD_I_STR-XBRFBSS sy-vline 
WA_V_TZZKD_I_STR-TDPREVIEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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