ABAP Select data from SAP table CKKS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKKS
*  INTO TABLE @DATA(IT_CKKS2).
*--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_CKKS INDEX 1 INTO DATA(WA_CKKS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKKS>-MANDT = 1.
<CKKS>-KOKRS = 1.
<CKKS>-KALNR = 1.
<CKKS>-WTTYP = 1.
<CKKS>-VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKKS-KKART, sy-vline,
  WA_CKKS-GJAHR, sy-vline,
  WA_CKKS-ERFDT, sy-vline,
  WA_CKKS-ERFNM, sy-vline,
  WA_CKKS-AENDT, sy-vline,
  WA_CKKS-AENNM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKKS 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_CKKS 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_CKKS INTO WA_CKKS.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKKS-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKKS-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field UKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CKKS-UKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKKS-UKURS.
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_CKKS_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
KALNR TYPE STRING,
WTTYP TYPE STRING,
VERSN TYPE STRING,
KKART TYPE STRING,
GJAHR TYPE STRING,
ERFDT TYPE STRING,
ERFNM TYPE STRING,
AENDT TYPE STRING,
AENNM TYPE STRING,
ABSDT TYPE STRING,
ABSNM TYPE STRING,
STATK TYPE STRING,
STRNG TYPE STRING,
PSDAT TYPE STRING,
MENGE TYPE STRING,
MEEHT TYPE STRING,
HWGES TYPE STRING,
FWGES TYPE STRING,
HWAER TYPE STRING,
FWAER TYPE STRING,
UKURS TYPE STRING,
KURST TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,
GWRT1 TYPE STRING,
GWRT2 TYPE STRING,
GWRT3 TYPE STRING,
GWRT4 TYPE STRING,
GWRT5 TYPE STRING,
STFLG TYPE STRING,
ZTFLG TYPE STRING,
FVFLG TYPE STRING,
DLFLG TYPE STRING,
FRFLG TYPE STRING,
PRVFN TYPE STRING,
PKANZ TYPE STRING,
BZOBJ TYPE STRING,
PSANZ TYPE STRING,
KNNZ1 TYPE STRING,
KNNZ2 TYPE STRING,
KNNZ3 TYPE STRING,
KNNZ4 TYPE STRING,
KNNZ5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKKS_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_CKKS_STR-MANDT sy-vline 
WA_CKKS_STR-KOKRS sy-vline 
WA_CKKS_STR-KALNR sy-vline 
WA_CKKS_STR-WTTYP sy-vline 
WA_CKKS_STR-VERSN sy-vline 
WA_CKKS_STR-KKART sy-vline 
WA_CKKS_STR-GJAHR sy-vline 
WA_CKKS_STR-ERFDT sy-vline 
WA_CKKS_STR-ERFNM sy-vline 
WA_CKKS_STR-AENDT sy-vline 
WA_CKKS_STR-AENNM sy-vline 
WA_CKKS_STR-ABSDT sy-vline 
WA_CKKS_STR-ABSNM sy-vline 
WA_CKKS_STR-STATK sy-vline 
WA_CKKS_STR-STRNG sy-vline 
WA_CKKS_STR-PSDAT sy-vline 
WA_CKKS_STR-MENGE sy-vline 
WA_CKKS_STR-MEEHT sy-vline 
WA_CKKS_STR-HWGES sy-vline 
WA_CKKS_STR-FWGES sy-vline 
WA_CKKS_STR-HWAER sy-vline 
WA_CKKS_STR-FWAER sy-vline 
WA_CKKS_STR-UKURS sy-vline 
WA_CKKS_STR-KURST sy-vline 
WA_CKKS_STR-FFACT sy-vline 
WA_CKKS_STR-TFACT sy-vline 
WA_CKKS_STR-GWRT1 sy-vline 
WA_CKKS_STR-GWRT2 sy-vline 
WA_CKKS_STR-GWRT3 sy-vline 
WA_CKKS_STR-GWRT4 sy-vline 
WA_CKKS_STR-GWRT5 sy-vline 
WA_CKKS_STR-STFLG sy-vline 
WA_CKKS_STR-ZTFLG sy-vline 
WA_CKKS_STR-FVFLG sy-vline 
WA_CKKS_STR-DLFLG sy-vline 
WA_CKKS_STR-FRFLG sy-vline 
WA_CKKS_STR-PRVFN sy-vline 
WA_CKKS_STR-PKANZ sy-vline 
WA_CKKS_STR-BZOBJ sy-vline 
WA_CKKS_STR-PSANZ sy-vline 
WA_CKKS_STR-KNNZ1 sy-vline 
WA_CKKS_STR-KNNZ2 sy-vline 
WA_CKKS_STR-KNNZ3 sy-vline 
WA_CKKS_STR-KNNZ4 sy-vline 
WA_CKKS_STR-KNNZ5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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