ABAP Select data from SAP table TZZKD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TZZKD
*  INTO TABLE @DATA(IT_TZZKD2).
*--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_TZZKD INDEX 1 INTO DATA(WA_TZZKD2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TZZKD-ROLE_ORIG, sy-vline,
  WA_TZZKD-ROLETYP, sy-vline,
  WA_TZZKD-ROLE, sy-vline,
  WA_TZZKD-ROLETYPEMP, sy-vline,
  WA_TZZKD-SUBANWDG, sy-vline,
  WA_TZZKD-BRFNM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TZZKD 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_TZZKD 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_TZZKD INTO WA_TZZKD.


*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_TZZKD-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZZKD-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_TZZKD_STR, 
MANDT TYPE STRING,
RANTYP TYPE STRING,
KORRVORF TYPE STRING,
LFDNR TYPE STRING,
APPL TYPE STRING,
ROLE_ORIG TYPE STRING,
ROLETYP TYPE STRING,
ROLE TYPE STRING,
ROLETYPEMP TYPE STRING,
SUBANWDG TYPE STRING,
BRFNM TYPE STRING,
DUMMY2 TYPE STRING,
SKZA TYPE STRING,
AUSWAHL TYPE STRING,
EDITIERBAR TYPE STRING,
JBSTAUSW TYPE STRING,
JSPFB TYPE STRING,
VLISTE TYPE STRING,
TDPAGESLCT TYPE STRING,
TDCOPIES TYPE STRING,
TDDEST TYPE STRING,
TDPREVIEW TYPE STRING,
TDNOPREV TYPE STRING,
TDNOPRINT TYPE STRING,
TDNEWID TYPE STRING,
TDPAGEFORM TYPE STRING,
TDDATASET TYPE STRING,
TDSUFFIX1 TYPE STRING,
TDSUFFIX2 TYPE STRING,
TDIMMED TYPE STRING,
TDDELETE TYPE STRING,
TDLIFETIME TYPE STRING,
TDSCHEDULE TYPE STRING,
TDSENDDATE TYPE STRING,
TDSENDTIME TYPE STRING,
TDTELELAND TYPE STRING,
TDTELENUM TYPE STRING,
TDTELENUME TYPE STRING,
TDTITLE TYPE STRING,
TDAPPL TYPE STRING,
TDPRINTER TYPE STRING,
TDDRIVER TYPE STRING,
TDABAP TYPE STRING,
TDOTFCALL TYPE STRING,
TDOTFTYPE TYPE STRING,
TDSPOOLID TYPE STRING,
TDFAXID TYPE STRING,
TDMAILID TYPE STRING,
TDPAGES TYPE STRING,
TDFORMS TYPE STRING,
TDDEVICE TYPE STRING,
TDWARNINGS TYPE STRING,
TDSCREEN TYPE STRING,
TDSCDRIVER TYPE STRING,
TDSCABAP TYPE STRING,
TDPROGRAM TYPE STRING,
TDTEST TYPE STRING,
TDSCRNPOS TYPE STRING,
TDCOVER TYPE STRING,
TDCOVTITLE TYPE STRING,
TDRECEIVER TYPE STRING,
TDDIVISION TYPE STRING,
TDAUTORITY TYPE STRING,
TDARMOD TYPE STRING,
TDIEXIT TYPE STRING,
USEREXIT TYPE STRING,
TDGETOTF TYPE STRING,
TDRTL TYPE STRING,
FAXFORMAT TYPE STRING,
TDFAXUSER TYPE STRING,
RQPOSNAME TYPE STRING,
TDFINAL TYPE STRING,
BCS_REQST TYPE STRING,
BCS_STATUS TYPE STRING,
BZTYP TYPE STRING,
ROLETYP_ORIG TYPE STRING,
SAKTPAS TYPE STRING,
ROLETYP_ZGP TYPE STRING,
ROLETYP_ORIG_ZGP TYPE STRING,
ROLETYPEMP_ZGP TYPE STRING,
BZTYP_ZGP TYPE STRING,
ROLE_CORR TYPE STRING,
ROLE_CORR_ORIG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TZZKD_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_TZZKD_STR-MANDT sy-vline 
WA_TZZKD_STR-RANTYP sy-vline 
WA_TZZKD_STR-KORRVORF sy-vline 
WA_TZZKD_STR-LFDNR sy-vline 
WA_TZZKD_STR-APPL sy-vline 
WA_TZZKD_STR-ROLE_ORIG sy-vline 
WA_TZZKD_STR-ROLETYP sy-vline 
WA_TZZKD_STR-ROLE sy-vline 
WA_TZZKD_STR-ROLETYPEMP sy-vline 
WA_TZZKD_STR-SUBANWDG sy-vline 
WA_TZZKD_STR-BRFNM sy-vline 
WA_TZZKD_STR-DUMMY2 sy-vline 
WA_TZZKD_STR-SKZA sy-vline 
WA_TZZKD_STR-AUSWAHL sy-vline 
WA_TZZKD_STR-EDITIERBAR sy-vline 
WA_TZZKD_STR-JBSTAUSW sy-vline 
WA_TZZKD_STR-JSPFB sy-vline 
WA_TZZKD_STR-VLISTE sy-vline 
WA_TZZKD_STR-TDPAGESLCT sy-vline 
WA_TZZKD_STR-TDCOPIES sy-vline 
WA_TZZKD_STR-TDDEST sy-vline 
WA_TZZKD_STR-TDPREVIEW sy-vline 
WA_TZZKD_STR-TDNOPREV sy-vline 
WA_TZZKD_STR-TDNOPRINT sy-vline 
WA_TZZKD_STR-TDNEWID sy-vline 
WA_TZZKD_STR-TDPAGEFORM sy-vline 
WA_TZZKD_STR-TDDATASET sy-vline 
WA_TZZKD_STR-TDSUFFIX1 sy-vline 
WA_TZZKD_STR-TDSUFFIX2 sy-vline 
WA_TZZKD_STR-TDIMMED sy-vline 
WA_TZZKD_STR-TDDELETE sy-vline 
WA_TZZKD_STR-TDLIFETIME sy-vline 
WA_TZZKD_STR-TDSCHEDULE sy-vline 
WA_TZZKD_STR-TDSENDDATE sy-vline 
WA_TZZKD_STR-TDSENDTIME sy-vline 
WA_TZZKD_STR-TDTELELAND sy-vline 
WA_TZZKD_STR-TDTELENUM sy-vline 
WA_TZZKD_STR-TDTELENUME sy-vline 
WA_TZZKD_STR-TDTITLE sy-vline 
WA_TZZKD_STR-TDAPPL sy-vline 
WA_TZZKD_STR-TDPRINTER sy-vline 
WA_TZZKD_STR-TDDRIVER sy-vline 
WA_TZZKD_STR-TDABAP sy-vline 
WA_TZZKD_STR-TDOTFCALL sy-vline 
WA_TZZKD_STR-TDOTFTYPE sy-vline 
WA_TZZKD_STR-TDSPOOLID sy-vline 
WA_TZZKD_STR-TDFAXID sy-vline 
WA_TZZKD_STR-TDMAILID sy-vline 
WA_TZZKD_STR-TDPAGES sy-vline 
WA_TZZKD_STR-TDFORMS sy-vline 
WA_TZZKD_STR-TDDEVICE sy-vline 
WA_TZZKD_STR-TDWARNINGS sy-vline 
WA_TZZKD_STR-TDSCREEN sy-vline 
WA_TZZKD_STR-TDSCDRIVER sy-vline 
WA_TZZKD_STR-TDSCABAP sy-vline 
WA_TZZKD_STR-TDPROGRAM sy-vline 
WA_TZZKD_STR-TDTEST sy-vline 
WA_TZZKD_STR-TDSCRNPOS sy-vline 
WA_TZZKD_STR-TDCOVER sy-vline 
WA_TZZKD_STR-TDCOVTITLE sy-vline 
WA_TZZKD_STR-TDRECEIVER sy-vline 
WA_TZZKD_STR-TDDIVISION sy-vline 
WA_TZZKD_STR-TDAUTORITY sy-vline 
WA_TZZKD_STR-TDARMOD sy-vline 
WA_TZZKD_STR-TDIEXIT sy-vline 
WA_TZZKD_STR-USEREXIT sy-vline 
WA_TZZKD_STR-TDGETOTF sy-vline 
WA_TZZKD_STR-TDRTL sy-vline 
WA_TZZKD_STR-FAXFORMAT sy-vline 
WA_TZZKD_STR-TDFAXUSER sy-vline 
WA_TZZKD_STR-RQPOSNAME sy-vline 
WA_TZZKD_STR-TDFINAL sy-vline 
WA_TZZKD_STR-BCS_REQST sy-vline 
WA_TZZKD_STR-BCS_STATUS sy-vline 
WA_TZZKD_STR-BZTYP sy-vline 
WA_TZZKD_STR-ROLETYP_ORIG sy-vline 
WA_TZZKD_STR-SAKTPAS sy-vline 
WA_TZZKD_STR-ROLETYP_ZGP sy-vline 
WA_TZZKD_STR-ROLETYP_ORIG_ZGP sy-vline 
WA_TZZKD_STR-ROLETYPEMP_ZGP sy-vline 
WA_TZZKD_STR-BZTYP_ZGP sy-vline 
WA_TZZKD_STR-ROLE_CORR sy-vline 
WA_TZZKD_STR-ROLE_CORR_ORIG sy-vline      INTO ld_text SEPARATED BY SPACE.

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