ABAP Select data from SAP table CKMLCCS_ORDER_GM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKMLCCS_ORDER_GM
*  INTO TABLE @DATA(IT_CKMLCCS_ORDER_GM2).
*--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_CKMLCCS_ORDER_GM INDEX 1 INTO DATA(WA_CKMLCCS_ORDER_GM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKMLCCS_ORDER_GM>-KALNR = 1.
<CKMLCCS_ORDER_GM>-WERKS = 1.
<CKMLCCS_ORDER_GM>-BDATJ = 1.
<CKMLCCS_ORDER_GM>-POPER = 1.
<CKMLCCS_ORDER_GM>-MENGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKMLCCS_ORDER_GM-KSTAR, sy-vline,
  WA_CKMLCCS_ORDER_GM-HRKFT, sy-vline,
  WA_CKMLCCS_ORDER_GM-AUFPS, sy-vline,
  WA_CKMLCCS_ORDER_GM-VGABE, sy-vline,
  WA_CKMLCCS_ORDER_GM-USPOB, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CKMLCCS_ORDER_GM 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_CKMLCCS_ORDER_GM 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_CKMLCCS_ORDER_GM INTO WA_CKMLCCS_ORDER_GM.


*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 BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCCS_ORDER_GM-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCCS_ORDER_GM-BDATJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCCS_ORDER_GM-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCCS_ORDER_GM-KSTAR.
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_CKMLCCS_ORDER_GM_STR, 
KALNR TYPE STRING,
WERKS TYPE STRING,
BDATJ TYPE STRING,
POPER TYPE STRING,
MENGE TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
AUFPS TYPE STRING,
VGABE TYPE STRING,
USPOB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKMLCCS_ORDER_GM_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_CKMLCCS_ORDER_GM_STR-KALNR sy-vline 
WA_CKMLCCS_ORDER_GM_STR-WERKS sy-vline 
WA_CKMLCCS_ORDER_GM_STR-BDATJ sy-vline 
WA_CKMLCCS_ORDER_GM_STR-POPER sy-vline 
WA_CKMLCCS_ORDER_GM_STR-MENGE sy-vline 
WA_CKMLCCS_ORDER_GM_STR-KSTAR sy-vline 
WA_CKMLCCS_ORDER_GM_STR-HRKFT sy-vline 
WA_CKMLCCS_ORDER_GM_STR-AUFPS sy-vline 
WA_CKMLCCS_ORDER_GM_STR-VGABE sy-vline 
WA_CKMLCCS_ORDER_GM_STR-USPOB sy-vline      INTO ld_text SEPARATED BY SPACE.

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