ABAP Select data from SAP table CKMO_COM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKMO_COM
*  INTO TABLE @DATA(IT_CKMO_COM2).
*--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_CKMO_COM INDEX 1 INTO DATA(WA_CKMO_COM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKMO_COM>-WEMNG = 1.
<CKMO_COM>-AUFNR = 1.
<CKMO_COM>-POSNR = 1.
<CKMO_COM>-MATNR = 1.
<CKMO_COM>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKMO_COM-BWTAR, sy-vline,
  WA_CKMO_COM-SOBKZ, sy-vline,
  WA_CKMO_COM-NETWR, sy-vline,
  WA_CKMO_COM-KDAUF, sy-vline,
  WA_CKMO_COM-KDPOS, sy-vline,
  WA_CKMO_COM-PS_PSP_PNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKMO_COM 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_CKMO_COM 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_CKMO_COM INTO WA_CKMO_COM.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field SJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-SJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-SJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field MAT_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-MAT_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-MAT_PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMO_COM-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMO_COM-BDATJ.
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_CKMO_COM_STR, 
WEMNG TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BWTAR TYPE STRING,
SOBKZ TYPE STRING,
NETWR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PS_PSP_PNR TYPE STRING,
PARWK TYPE STRING,
KZBWS TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
BUDAT TYPE STRING,
CHARG TYPE STRING,
SJAHR TYPE STRING,
SMBLP TYPE STRING,
SMBLN TYPE STRING,
XSTOR TYPE STRING,
MAT_KDAUF TYPE STRING,
MAT_KDPOS TYPE STRING,
MAT_PSPNR TYPE STRING,
SHKZG TYPE STRING,
BWKEY TYPE STRING,
POPER TYPE STRING,
BDATJ TYPE STRING,
HRKFT TYPE STRING,
KALN1 TYPE STRING,
WEUNB TYPE STRING,
BUSTW TYPE STRING,
BSTMG TYPE STRING,
AUWE_FLG TYPE STRING,
VPRSV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKMO_COM_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_CKMO_COM_STR-WEMNG sy-vline 
WA_CKMO_COM_STR-AUFNR sy-vline 
WA_CKMO_COM_STR-POSNR sy-vline 
WA_CKMO_COM_STR-MATNR sy-vline 
WA_CKMO_COM_STR-WERKS sy-vline 
WA_CKMO_COM_STR-BWTAR sy-vline 
WA_CKMO_COM_STR-SOBKZ sy-vline 
WA_CKMO_COM_STR-NETWR sy-vline 
WA_CKMO_COM_STR-KDAUF sy-vline 
WA_CKMO_COM_STR-KDPOS sy-vline 
WA_CKMO_COM_STR-PS_PSP_PNR sy-vline 
WA_CKMO_COM_STR-PARWK sy-vline 
WA_CKMO_COM_STR-KZBWS sy-vline 
WA_CKMO_COM_STR-MENGE sy-vline 
WA_CKMO_COM_STR-MEINS sy-vline 
WA_CKMO_COM_STR-BUDAT sy-vline 
WA_CKMO_COM_STR-CHARG sy-vline 
WA_CKMO_COM_STR-SJAHR sy-vline 
WA_CKMO_COM_STR-SMBLP sy-vline 
WA_CKMO_COM_STR-SMBLN sy-vline 
WA_CKMO_COM_STR-XSTOR sy-vline 
WA_CKMO_COM_STR-MAT_KDAUF sy-vline 
WA_CKMO_COM_STR-MAT_KDPOS sy-vline 
WA_CKMO_COM_STR-MAT_PSPNR sy-vline 
WA_CKMO_COM_STR-SHKZG sy-vline 
WA_CKMO_COM_STR-BWKEY sy-vline 
WA_CKMO_COM_STR-POPER sy-vline 
WA_CKMO_COM_STR-BDATJ sy-vline 
WA_CKMO_COM_STR-HRKFT sy-vline 
WA_CKMO_COM_STR-KALN1 sy-vline 
WA_CKMO_COM_STR-WEUNB sy-vline 
WA_CKMO_COM_STR-BUSTW sy-vline 
WA_CKMO_COM_STR-BSTMG sy-vline 
WA_CKMO_COM_STR-AUWE_FLG sy-vline 
WA_CKMO_COM_STR-VPRSV sy-vline      INTO ld_text SEPARATED BY SPACE.

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