ABAP Select data from SAP table CNOMTKTITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNOMTKTITM
*  INTO TABLE @DATA(IT_CNOMTKTITM2).
*--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_CNOMTKTITM INDEX 1 INTO DATA(WA_CNOMTKTITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNOMTKTITM>-MANDT = 1.
<CNOMTKTITM>-NOMINATIONTICKETKEY = 1.
<CNOMTKTITM>-NOMINATIONTICKETITEM = 1.
<CNOMTKTITM>-NOMINATIONTICKETVERSION = 1.
<CNOMTKTITM>-NOMINATIONTICKETPURPOSE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNOMTKTITM-TICKETEXTERNALNUMBER, sy-vline,
  WA_CNOMTKTITM-NOMINATIONTICKETEXTNUMBER, sy-vline,
  WA_CNOMTKTITM-NOMINATIONITEMSTATUS, sy-vline,
  WA_CNOMTKTITM-NOMINATIONDOCITEM, sy-vline,
  WA_CNOMTKTITM-TICKETCREATEDBYUSER, sy-vline,
  WA_CNOMTKTITM-TICKETCREATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNOMTKTITM 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_CNOMTKTITM 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_CNOMTKTITM INTO WA_CNOMTKTITM.


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

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

*Conversion exit ALPHA, internal->external for field NOMINATIONDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNOMTKTITM-NOMINATIONDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNOMTKTITM-NOMINATIONDOC.
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_CNOMTKTITM_STR, 
MANDT TYPE STRING,
NOMINATIONTICKETKEY TYPE STRING,
NOMINATIONTICKETITEM TYPE STRING,
NOMINATIONTICKETVERSION TYPE STRING,
NOMINATIONTICKETPURPOSE TYPE STRING,
TICKETEXTERNALNUMBER TYPE STRING,
NOMINATIONTICKETEXTNUMBER TYPE STRING,
NOMINATIONITEMSTATUS TYPE STRING,
NOMINATIONDOCITEM TYPE STRING,
TICKETCREATEDBYUSER TYPE STRING,
TICKETCREATIONDATE TYPE STRING,
NOMINATIONDOC TYPE STRING,
NOMINATIONTICKETTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNOMTKTITM_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_CNOMTKTITM_STR-MANDT sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETKEY sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETITEM sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETVERSION sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETPURPOSE sy-vline 
WA_CNOMTKTITM_STR-TICKETEXTERNALNUMBER sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETEXTNUMBER sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONITEMSTATUS sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONDOCITEM sy-vline 
WA_CNOMTKTITM_STR-TICKETCREATEDBYUSER sy-vline 
WA_CNOMTKTITM_STR-TICKETCREATIONDATE sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONDOC sy-vline 
WA_CNOMTKTITM_STR-NOMINATIONTICKETTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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