ABAP Select data from SAP table CKI_TCKM2E into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKI_TCKM2E 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 CKI_TCKM2E. 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 CKI_TCKM2E 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_CKI_TCKM2E TYPE STANDARD TABLE OF CKI_TCKM2E,
      WA_CKI_TCKM2E TYPE CKI_TCKM2E,
      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: <CKI_TCKM2E> TYPE CKI_TCKM2E.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKI_TCKM2E.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKI_TCKM2E
  INTO TABLE IT_CKI_TCKM2E.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI_TCKM2E
*  INTO TABLE @DATA(IT_CKI_TCKM2E2).
*--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_CKI_TCKM2E INDEX 1 INTO DATA(WA_CKI_TCKM2E2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKI_TCKM2E ASSIGNING <CKI_TCKM2E>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI_TCKM2E>-MANDTE = 1.
<CKI_TCKM2E>-BWKEYE = 1.
<CKI_TCKM2E>-LFDNRE = 1.
<CKI_TCKM2E>-MATLEDE = 1.
<CKI_TCKM2E>-MANDT = 1.

ENDLOOP.

LOOP AT IT_CKI_TCKM2E INTO WA_CKI_TCKM2E.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI_TCKM2E-MATLED, sy-vline,
  WA_CKI_TCKM2E-CURTP1, sy-vline,
  WA_CKI_TCKM2E-CURTP2, sy-vline,
  WA_CKI_TCKM2E-CURTP3, sy-vline,
  WA_CKI_TCKM2E-MLFICT, sy-vline,
  WA_CKI_TCKM2E-MLCOCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI_TCKM2E 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_CKI_TCKM2E 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_CKI_TCKM2E INTO WA_CKI_TCKM2E.


*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_CKI_TCKM2E_STR, 
MANDTE TYPE STRING,
BWKEYE TYPE STRING,
LFDNRE TYPE STRING,
MATLEDE TYPE STRING,
MANDT TYPE STRING,
MATLED TYPE STRING,
CURTP1 TYPE STRING,
CURTP2 TYPE STRING,
CURTP3 TYPE STRING,
MLFICT TYPE STRING,
MLCOCT TYPE STRING,
WAERS_1 TYPE STRING,
WAERS_2 TYPE STRING,
WAERS_3 TYPE STRING,
TEXT_1 TYPE STRING,
TEXT_2 TYPE STRING,
TEXT_3 TYPE STRING,
KURST_1 TYPE STRING,
KURST_2 TYPE STRING,
KURST_3 TYPE STRING,
BASW_1 TYPE STRING,
BASW_2 TYPE STRING,
BASW_3 TYPE STRING,
UMRD_1 TYPE STRING,
UMRD_2 TYPE STRING,
UMRD_3 TYPE STRING,
CURRTYP_1 TYPE STRING,
CURRTYP_2 TYPE STRING,
CURRTYP_3 TYPE STRING,
VALUTYP_1 TYPE STRING,
VALUTYP_2 TYPE STRING,
VALUTYP_3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI_TCKM2E_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_CKI_TCKM2E_STR-MANDTE sy-vline 
WA_CKI_TCKM2E_STR-BWKEYE sy-vline 
WA_CKI_TCKM2E_STR-LFDNRE sy-vline 
WA_CKI_TCKM2E_STR-MATLEDE sy-vline 
WA_CKI_TCKM2E_STR-MANDT sy-vline 
WA_CKI_TCKM2E_STR-MATLED sy-vline 
WA_CKI_TCKM2E_STR-CURTP1 sy-vline 
WA_CKI_TCKM2E_STR-CURTP2 sy-vline 
WA_CKI_TCKM2E_STR-CURTP3 sy-vline 
WA_CKI_TCKM2E_STR-MLFICT sy-vline 
WA_CKI_TCKM2E_STR-MLCOCT sy-vline 
WA_CKI_TCKM2E_STR-WAERS_1 sy-vline 
WA_CKI_TCKM2E_STR-WAERS_2 sy-vline 
WA_CKI_TCKM2E_STR-WAERS_3 sy-vline 
WA_CKI_TCKM2E_STR-TEXT_1 sy-vline 
WA_CKI_TCKM2E_STR-TEXT_2 sy-vline 
WA_CKI_TCKM2E_STR-TEXT_3 sy-vline 
WA_CKI_TCKM2E_STR-KURST_1 sy-vline 
WA_CKI_TCKM2E_STR-KURST_2 sy-vline 
WA_CKI_TCKM2E_STR-KURST_3 sy-vline 
WA_CKI_TCKM2E_STR-BASW_1 sy-vline 
WA_CKI_TCKM2E_STR-BASW_2 sy-vline 
WA_CKI_TCKM2E_STR-BASW_3 sy-vline 
WA_CKI_TCKM2E_STR-UMRD_1 sy-vline 
WA_CKI_TCKM2E_STR-UMRD_2 sy-vline 
WA_CKI_TCKM2E_STR-UMRD_3 sy-vline 
WA_CKI_TCKM2E_STR-CURRTYP_1 sy-vline 
WA_CKI_TCKM2E_STR-CURRTYP_2 sy-vline 
WA_CKI_TCKM2E_STR-CURRTYP_3 sy-vline 
WA_CKI_TCKM2E_STR-VALUTYP_1 sy-vline 
WA_CKI_TCKM2E_STR-VALUTYP_2 sy-vline 
WA_CKI_TCKM2E_STR-VALUTYP_3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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