ABAP Select data from SAP table CKML_S_WPD_STATISTICS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_S_WPD_STATISTICS
*  INTO TABLE @DATA(IT_CKML_S_WPD_STATISTICS2).
*--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_CKML_S_WPD_STATISTICS INDEX 1 INTO DATA(WA_CKML_S_WPD_STATISTICS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKML_S_WPD_STATISTICS>-ID = 1.
<CKML_S_WPD_STATISTICS>-BWKEY = 1.
<CKML_S_WPD_STATISTICS>-WERKS = 1.
<CKML_S_WPD_STATISTICS>-MTART = 1.
<CKML_S_WPD_STATISTICS>-BKLAS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKML_S_WPD_STATISTICS-MATKL, sy-vline,
  WA_CKML_S_WPD_STATISTICS-SPART, sy-vline,
  WA_CKML_S_WPD_STATISTICS-HRKFT, sy-vline,
  WA_CKML_S_WPD_STATISTICS-KALST, sy-vline,
  WA_CKML_S_WPD_STATISTICS-CYCLENR, sy-vline,
  WA_CKML_S_WPD_STATISTICS-OTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKML_S_WPD_STATISTICS 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_CKML_S_WPD_STATISTICS 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_CKML_S_WPD_STATISTICS INTO WA_CKML_S_WPD_STATISTICS.


*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 ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_WPD_STATISTICS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_WPD_STATISTICS-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_WPD_STATISTICS-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_WPD_STATISTICS-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_WPD_STATISTICS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_WPD_STATISTICS-MATNR.
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_CKML_S_WPD_STATISTICS_STR, 
ID TYPE STRING,
BWKEY TYPE STRING,
WERKS TYPE STRING,
MTART TYPE STRING,
BKLAS TYPE STRING,
MATKL TYPE STRING,
SPART TYPE STRING,
HRKFT TYPE STRING,
KALST TYPE STRING,
CYCLENR TYPE STRING,
OTYPE TYPE STRING,
OBJNR TYPE STRING,
OBJNR_KTEXT TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
MATNR TYPE STRING,
AMOUNT_1 TYPE STRING,
WAERS_1 TYPE STRING,
AMOUNT_2 TYPE STRING,
WAERS_2 TYPE STRING,
AMOUNT_3 TYPE STRING,
WAERS_3 TYPE STRING,
STATUS_ICON TYPE STRING,
FLG_ERROR TYPE STRING,
COUNT_LINE TYPE STRING,
COUNT_REST TYPE STRING,
COUNT_ERROR TYPE STRING,
COUNT_SUCCESS TYPE STRING,
OBJTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKML_S_WPD_STATISTICS_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_CKML_S_WPD_STATISTICS_STR-ID sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-BWKEY sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-WERKS sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-MTART sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-BKLAS sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-MATKL sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-SPART sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-HRKFT sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-KALST sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-CYCLENR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-OTYPE sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-OBJNR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-OBJNR_KTEXT sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-KOKRS sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-KOSTL sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-LSTAR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-PRZNR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-MATNR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-AMOUNT_1 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-WAERS_1 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-AMOUNT_2 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-WAERS_2 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-AMOUNT_3 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-WAERS_3 sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-STATUS_ICON sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-FLG_ERROR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-COUNT_LINE sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-COUNT_REST sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-COUNT_ERROR sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-COUNT_SUCCESS sy-vline 
WA_CKML_S_WPD_STATISTICS_STR-OBJTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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