ABAP Select data from SAP table CKI_CKMLPP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKI_CKMLPP 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_CKMLPP. 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_CKMLPP 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_CKMLPP TYPE STANDARD TABLE OF CKI_CKMLPP,
      WA_CKI_CKMLPP TYPE CKI_CKMLPP,
      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_CKMLPP> TYPE CKI_CKMLPP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI_CKMLPP
*  INTO TABLE @DATA(IT_CKI_CKMLPP2).
*--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_CKMLPP INDEX 1 INTO DATA(WA_CKI_CKMLPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI_CKMLPP>-KZ_ABGER = 1.
<CKI_CKMLPP>-XKONCHK = 1.
<CKI_CKMLPP>-STATUS = 1.
<CKI_CKMLPP>-MEINS = 1.
<CKI_CKMLPP>-SAPRL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI_CKMLPP-XERROR, sy-vline,
  WA_CKI_CKMLPP-CD_OK, sy-vline,
  WA_CKI_CKMLPP-XNEWCCSNEXTMON, sy-vline,
  WA_CKI_CKMLPP-XMYMP, sy-vline,
  WA_CKI_CKMLPP-LBKUM, sy-vline,
  WA_CKI_CKMLPP-UMKUMO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI_CKMLPP 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_CKMLPP 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_CKMLPP INTO WA_CKI_CKMLPP.


*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 CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKI_CKMLPP-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI_CKMLPP-MEINS.
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_CKI_CKMLPP_STR, 
KZ_ABGER TYPE STRING,
XKONCHK TYPE STRING,
STATUS TYPE STRING,
MEINS TYPE STRING,
SAPRL TYPE STRING,
XERROR TYPE STRING,
CD_OK TYPE STRING,
XNEWCCSNEXTMON TYPE STRING,
XMYMP TYPE STRING,
LBKUM TYPE STRING,
UMKUMO TYPE STRING,
ABKUMO TYPE STRING,
ZUKUMO TYPE STRING,
SZKUMO TYPE STRING,
VPKUMO TYPE STRING,
VNKUMO TYPE STRING,
EKKUMO TYPE STRING,
PBKUMO TYPE STRING,
PBPOPO TYPE STRING,
VPPOPO TYPE STRING,
UMKUMA TYPE STRING,
ZUKUMA TYPE STRING,
EKKUMA TYPE STRING,
PBKUMA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI_CKMLPP_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_CKMLPP_STR-KZ_ABGER sy-vline 
WA_CKI_CKMLPP_STR-XKONCHK sy-vline 
WA_CKI_CKMLPP_STR-STATUS sy-vline 
WA_CKI_CKMLPP_STR-MEINS sy-vline 
WA_CKI_CKMLPP_STR-SAPRL sy-vline 
WA_CKI_CKMLPP_STR-XERROR sy-vline 
WA_CKI_CKMLPP_STR-CD_OK sy-vline 
WA_CKI_CKMLPP_STR-XNEWCCSNEXTMON sy-vline 
WA_CKI_CKMLPP_STR-XMYMP sy-vline 
WA_CKI_CKMLPP_STR-LBKUM sy-vline 
WA_CKI_CKMLPP_STR-UMKUMO sy-vline 
WA_CKI_CKMLPP_STR-ABKUMO sy-vline 
WA_CKI_CKMLPP_STR-ZUKUMO sy-vline 
WA_CKI_CKMLPP_STR-SZKUMO sy-vline 
WA_CKI_CKMLPP_STR-VPKUMO sy-vline 
WA_CKI_CKMLPP_STR-VNKUMO sy-vline 
WA_CKI_CKMLPP_STR-EKKUMO sy-vline 
WA_CKI_CKMLPP_STR-PBKUMO sy-vline 
WA_CKI_CKMLPP_STR-PBPOPO sy-vline 
WA_CKI_CKMLPP_STR-VPPOPO sy-vline 
WA_CKI_CKMLPP_STR-UMKUMA sy-vline 
WA_CKI_CKMLPP_STR-ZUKUMA sy-vline 
WA_CKI_CKMLPP_STR-EKKUMA sy-vline 
WA_CKI_CKMLPP_STR-PBKUMA sy-vline      INTO ld_text SEPARATED BY SPACE.

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