ABAP Select data from SAP table /KYK/CM38_OUTPUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /KYK/CM38_OUTPUT 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 /KYK/CM38_OUTPUT. 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 /KYK/CM38_OUTPUT 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_/KYK/CM38_OUTPUT TYPE STANDARD TABLE OF /KYK/CM38_OUTPUT,
      WA_/KYK/CM38_OUTPUT TYPE /KYK/CM38_OUTPUT,
      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: </KYK/CM38_OUTPUT> TYPE /KYK/CM38_OUTPUT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/KYK/CM38_OUTPUT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /KYK/CM38_OUTPUT
  INTO TABLE IT_/KYK/CM38_OUTPUT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /KYK/CM38_OUTPUT
*  INTO TABLE @DATA(IT_/KYK/CM38_OUTPUT2).
*--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_/KYK/CM38_OUTPUT INDEX 1 INTO DATA(WA_/KYK/CM38_OUTPUT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/KYK/CM38_OUTPUT ASSIGNING </KYK/CM38_OUTPUT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</KYK/CM38_OUTPUT>-PERIOD = 1.
</KYK/CM38_OUTPUT>-VLIWERT = 1.
</KYK/CM38_OUTPUT>-SLIBED = 1.
</KYK/CM38_OUTPUT>-SLIANGE = 1.
</KYK/CM38_OUTPUT>-SLIBELAS = 1.

ENDLOOP.

LOOP AT IT_/KYK/CM38_OUTPUT INTO WA_/KYK/CM38_OUTPUT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/KYK/CM38_OUTPUT-SLIDELTA, sy-vline,
  WA_/KYK/CM38_OUTPUT-KZ_EINP, sy-vline,
  WA_/KYK/CM38_OUTPUT-VERSCHIEB, sy-vline,
  WA_/KYK/CM38_OUTPUT-REQVER, sy-vline,
  WA_/KYK/CM38_OUTPUT-REQTOT, sy-vline,
  WA_/KYK/CM38_OUTPUT-POOLKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/KYK/CM38_OUTPUT 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_/KYK/CM38_OUTPUT 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_/KYK/CM38_OUTPUT INTO WA_/KYK/CM38_OUTPUT.


*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 KAPEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/CM38_OUTPUT-KAPEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/CM38_OUTPUT-KAPEH.
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_/KYK/CM38_OUTPUT_STR, 
PERIOD TYPE STRING,
VLIWERT TYPE STRING,
SLIBED TYPE STRING,
SLIANGE TYPE STRING,
SLIBELAS TYPE STRING,
SLIDELTA TYPE STRING,
KZ_EINP TYPE STRING,
VERSCHIEB TYPE STRING,
REQVER TYPE STRING,
REQTOT TYPE STRING,
POOLKZ TYPE STRING,
GANZEAUF TYPE STRING,
KBEDERMI TYPE STRING,
KBEDBERU TYPE STRING,
KBEDENTF TYPE STRING,
KAPEH TYPE STRING,
ARBPL_NAME TYPE STRING,
ARBPL_TEXT TYPE STRING,
KAPAR TYPE STRING,
KTEXT TYPE STRING,
WERKS TYPE STRING,
KAPID TYPE STRING,
ARBID TYPE STRING,
DETLS TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/KYK/CM38_OUTPUT_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_/KYK/CM38_OUTPUT_STR-PERIOD sy-vline 
WA_/KYK/CM38_OUTPUT_STR-VLIWERT sy-vline 
WA_/KYK/CM38_OUTPUT_STR-SLIBED sy-vline 
WA_/KYK/CM38_OUTPUT_STR-SLIANGE sy-vline 
WA_/KYK/CM38_OUTPUT_STR-SLIBELAS sy-vline 
WA_/KYK/CM38_OUTPUT_STR-SLIDELTA sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KZ_EINP sy-vline 
WA_/KYK/CM38_OUTPUT_STR-VERSCHIEB sy-vline 
WA_/KYK/CM38_OUTPUT_STR-REQVER sy-vline 
WA_/KYK/CM38_OUTPUT_STR-REQTOT sy-vline 
WA_/KYK/CM38_OUTPUT_STR-POOLKZ sy-vline 
WA_/KYK/CM38_OUTPUT_STR-GANZEAUF sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KBEDERMI sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KBEDBERU sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KBEDENTF sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KAPEH sy-vline 
WA_/KYK/CM38_OUTPUT_STR-ARBPL_NAME sy-vline 
WA_/KYK/CM38_OUTPUT_STR-ARBPL_TEXT sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KAPAR sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KTEXT sy-vline 
WA_/KYK/CM38_OUTPUT_STR-WERKS sy-vline 
WA_/KYK/CM38_OUTPUT_STR-KAPID sy-vline 
WA_/KYK/CM38_OUTPUT_STR-ARBID sy-vline 
WA_/KYK/CM38_OUTPUT_STR-DETLS sy-vline 
WA_/KYK/CM38_OUTPUT_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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