ABAP Select data from SAP table DKC02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DKC02 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 DKC02. 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 DKC02 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_DKC02 TYPE STANDARD TABLE OF DKC02,
      WA_DKC02 TYPE DKC02,
      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: <DKC02> TYPE DKC02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DKC02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DKC02
  INTO TABLE IT_DKC02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DKC02
*  INTO TABLE @DATA(IT_DKC022).
*--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_DKC02 INDEX 1 INTO DATA(WA_DKC022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DKC02 ASSIGNING <DKC02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DKC02>-TBERE = 1.
<DKC02>-TPROF = 1.
<DKC02>-TUSER = 1.
<DKC02>-TNUMM = 1.
<DKC02>-TNUMI = 1.

ENDLOOP.

LOOP AT IT_DKC02 INTO WA_DKC02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DKC02-THIER, sy-vline,
  WA_DKC02-TVERS, sy-vline,
  WA_DKC02-TVERT, sy-vline,
  WA_DKC02-TUMWT, sy-vline,
  WA_DKC02-TCYPL, sy-vline,
  WA_DKC02-TCYCL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DKC02 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_DKC02 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_DKC02 INTO WA_DKC02.


*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_DKC02_STR, 
TBERE TYPE STRING,
TPROF TYPE STRING,
TUSER TYPE STRING,
TNUMM TYPE STRING,
TNUMI TYPE STRING,
THIER TYPE STRING,
TVERS TYPE STRING,
TVERT TYPE STRING,
TUMWT TYPE STRING,
TCYPL TYPE STRING,
TCYCL TYPE STRING,
TCYP1 TYPE STRING,
TCYC1 TYPE STRING,
TCYP2 TYPE STRING,
TCYC2 TYPE STRING,
TCYP3 TYPE STRING,
TCYC3 TYPE STRING,
TPRAB TYPE STRING,
TMAKO TYPE STRING,
TABGR TYPE STRING,
TABGD TYPE STRING,
TKOAH TYPE STRING,
TGRKS TYPE STRING,
TGROR TYPE STRING,
TGRKL TYPE STRING,
TGRST TYPE STRING,
TSTAK TYPE STRING,
TSTLA TYPE STRING,
TDEFA TYPE STRING,
TPARA TYPE STRING,
TKOAE TYPE STRING,
TEMIX TYPE STRING,
TKSTT TYPE STRING,
TGRUN TYPE STRING,
TSTEU TYPE STRING,
TZUOD TYPE STRING,
TETAT TYPE STRING,
CCTRS TYPE STRING,
TZEIT TYPE STRING,
TZEI2 TYPE STRING,
TZEI3 TYPE STRING,
TVALS TYPE STRING,
TSUBS TYPE STRING,
TLVCU TYPE STRING,
TLVC2 TYPE STRING,
TLVCL TYPE STRING,
TLVCI TYPE STRING,
TLVMV TYPE STRING,
TLVSL TYPE STRING,
TGRPP TYPE STRING,
TGRP2 TYPE STRING,
TGRP3 TYPE STRING,
TGRP4 TYPE STRING,
TGRP5 TYPE STRING,
TGRP6 TYPE STRING,
TVALL TYPE STRING,
TVACT TYPE STRING,
TSALL TYPE STRING,
TSACT TYPE STRING,
TKSTA TYPE STRING,
TIASG TYPE STRING,
TLSTA TYPE STRING,
TPLPR TYPE STRING,
TSPLI TYPE STRING,
TTRFE TYPE STRING,
TTRFK TYPE STRING,
TLOKA TYPE STRING,
TLOLA TYPE STRING,
TLOSK TYPE STRING,
TROLL TYPE STRING,
TNIRW TYPE STRING,
TKZP1 TYPE STRING,
TKZ01 TYPE STRING,
TKZP2 TYPE STRING,
TKZ02 TYPE STRING,
TABWE TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
KTPLT TYPE STRING,
BEZEI TYPE STRING,
KORRNR TYPE STRING,
TXT70 TYPE STRING,
TXT50 TYPE STRING,
PRZTR TYPE STRING,
TPEIG TYPE STRING,
TGRBP TYPE STRING,
TCYAM TYPE STRING,
TCYPM TYPE STRING,
TCYAB TYPE STRING,
TCYPB TYPE STRING,
TKZAB TYPE STRING,
TKZPB TYPE STRING,
TKZAH TYPE STRING,
TKZPH TYPE STRING,
TTEMPLATE TYPE STRING,
TFTREE TYPE STRING,
TENVIRON TYPE STRING,
TBPSTRUCT TYPE STRING,
TSOPTEMPL TYPE STRING,
TVERD TYPE STRING,
TVERI TYPE STRING,
TFPLD TYPE STRING,
TFPLI TYPE STRING,
TFPDT TYPE STRING,
TFPIT TYPE STRING,
TVRDT TYPE STRING,
TVRIT TYPE STRING,
TLTX1 TYPE STRING,
TLTX2 TYPE STRING,
TLTX3 TYPE STRING,
TLTX4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DKC02_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_DKC02_STR-TBERE sy-vline 
WA_DKC02_STR-TPROF sy-vline 
WA_DKC02_STR-TUSER sy-vline 
WA_DKC02_STR-TNUMM sy-vline 
WA_DKC02_STR-TNUMI sy-vline 
WA_DKC02_STR-THIER sy-vline 
WA_DKC02_STR-TVERS sy-vline 
WA_DKC02_STR-TVERT sy-vline 
WA_DKC02_STR-TUMWT sy-vline 
WA_DKC02_STR-TCYPL sy-vline 
WA_DKC02_STR-TCYCL sy-vline 
WA_DKC02_STR-TCYP1 sy-vline 
WA_DKC02_STR-TCYC1 sy-vline 
WA_DKC02_STR-TCYP2 sy-vline 
WA_DKC02_STR-TCYC2 sy-vline 
WA_DKC02_STR-TCYP3 sy-vline 
WA_DKC02_STR-TCYC3 sy-vline 
WA_DKC02_STR-TPRAB sy-vline 
WA_DKC02_STR-TMAKO sy-vline 
WA_DKC02_STR-TABGR sy-vline 
WA_DKC02_STR-TABGD sy-vline 
WA_DKC02_STR-TKOAH sy-vline 
WA_DKC02_STR-TGRKS sy-vline 
WA_DKC02_STR-TGROR sy-vline 
WA_DKC02_STR-TGRKL sy-vline 
WA_DKC02_STR-TGRST sy-vline 
WA_DKC02_STR-TSTAK sy-vline 
WA_DKC02_STR-TSTLA sy-vline 
WA_DKC02_STR-TDEFA sy-vline 
WA_DKC02_STR-TPARA sy-vline 
WA_DKC02_STR-TKOAE sy-vline 
WA_DKC02_STR-TEMIX sy-vline 
WA_DKC02_STR-TKSTT sy-vline 
WA_DKC02_STR-TGRUN sy-vline 
WA_DKC02_STR-TSTEU sy-vline 
WA_DKC02_STR-TZUOD sy-vline 
WA_DKC02_STR-TETAT sy-vline 
WA_DKC02_STR-CCTRS sy-vline 
WA_DKC02_STR-TZEIT sy-vline 
WA_DKC02_STR-TZEI2 sy-vline 
WA_DKC02_STR-TZEI3 sy-vline 
WA_DKC02_STR-TVALS sy-vline 
WA_DKC02_STR-TSUBS sy-vline 
WA_DKC02_STR-TLVCU sy-vline 
WA_DKC02_STR-TLVC2 sy-vline 
WA_DKC02_STR-TLVCL sy-vline 
WA_DKC02_STR-TLVCI sy-vline 
WA_DKC02_STR-TLVMV sy-vline 
WA_DKC02_STR-TLVSL sy-vline 
WA_DKC02_STR-TGRPP sy-vline 
WA_DKC02_STR-TGRP2 sy-vline 
WA_DKC02_STR-TGRP3 sy-vline 
WA_DKC02_STR-TGRP4 sy-vline 
WA_DKC02_STR-TGRP5 sy-vline 
WA_DKC02_STR-TGRP6 sy-vline 
WA_DKC02_STR-TVALL sy-vline 
WA_DKC02_STR-TVACT sy-vline 
WA_DKC02_STR-TSALL sy-vline 
WA_DKC02_STR-TSACT sy-vline 
WA_DKC02_STR-TKSTA sy-vline 
WA_DKC02_STR-TIASG sy-vline 
WA_DKC02_STR-TLSTA sy-vline 
WA_DKC02_STR-TPLPR sy-vline 
WA_DKC02_STR-TSPLI sy-vline 
WA_DKC02_STR-TTRFE sy-vline 
WA_DKC02_STR-TTRFK sy-vline 
WA_DKC02_STR-TLOKA sy-vline 
WA_DKC02_STR-TLOLA sy-vline 
WA_DKC02_STR-TLOSK sy-vline 
WA_DKC02_STR-TROLL sy-vline 
WA_DKC02_STR-TNIRW sy-vline 
WA_DKC02_STR-TKZP1 sy-vline 
WA_DKC02_STR-TKZ01 sy-vline 
WA_DKC02_STR-TKZP2 sy-vline 
WA_DKC02_STR-TKZ02 sy-vline 
WA_DKC02_STR-TABWE sy-vline 
WA_DKC02_STR-KOKRS sy-vline 
WA_DKC02_STR-KTOPL sy-vline 
WA_DKC02_STR-KTPLT sy-vline 
WA_DKC02_STR-BEZEI sy-vline 
WA_DKC02_STR-KORRNR sy-vline 
WA_DKC02_STR-TXT70 sy-vline 
WA_DKC02_STR-TXT50 sy-vline 
WA_DKC02_STR-PRZTR sy-vline 
WA_DKC02_STR-TPEIG sy-vline 
WA_DKC02_STR-TGRBP sy-vline 
WA_DKC02_STR-TCYAM sy-vline 
WA_DKC02_STR-TCYPM sy-vline 
WA_DKC02_STR-TCYAB sy-vline 
WA_DKC02_STR-TCYPB sy-vline 
WA_DKC02_STR-TKZAB sy-vline 
WA_DKC02_STR-TKZPB sy-vline 
WA_DKC02_STR-TKZAH sy-vline 
WA_DKC02_STR-TKZPH sy-vline 
WA_DKC02_STR-TTEMPLATE sy-vline 
WA_DKC02_STR-TFTREE sy-vline 
WA_DKC02_STR-TENVIRON sy-vline 
WA_DKC02_STR-TBPSTRUCT sy-vline 
WA_DKC02_STR-TSOPTEMPL sy-vline 
WA_DKC02_STR-TVERD sy-vline 
WA_DKC02_STR-TVERI sy-vline 
WA_DKC02_STR-TFPLD sy-vline 
WA_DKC02_STR-TFPLI sy-vline 
WA_DKC02_STR-TFPDT sy-vline 
WA_DKC02_STR-TFPIT sy-vline 
WA_DKC02_STR-TVRDT sy-vline 
WA_DKC02_STR-TVRIT sy-vline 
WA_DKC02_STR-TLTX1 sy-vline 
WA_DKC02_STR-TLTX2 sy-vline 
WA_DKC02_STR-TLTX3 sy-vline 
WA_DKC02_STR-TLTX4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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