ABAP Select data from SAP table INOMTKTPARAM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INOMTKTPARAM
*  INTO TABLE @DATA(IT_INOMTKTPARAM2).
*--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_INOMTKTPARAM INDEX 1 INTO DATA(WA_INOMTKTPARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INOMTKTPARAM>-MANDT = 1.
<INOMTKTPARAM>-NOMINATIONDOC = 1.
<INOMTKTPARAM>-NOMINATIONDOCITEM = 1.
<INOMTKTPARAM>-NOMINATIONTICKETKEY = 1.
<INOMTKTPARAM>-NOMINATIONTICKETITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INOMTKTPARAM-NOMINATIONTICKETVERSION, sy-vline,
  WA_INOMTKTPARAM-OILPHYSPARAMNAME, sy-vline,
  WA_INOMTKTPARAM-OILPHYSPARAMFIELDNAME, sy-vline,
  WA_INOMTKTPARAM-OILPHYSPARAMUOMFIELDNAME, sy-vline,
  WA_INOMTKTPARAM-OILPHYSPARAMDESCSTYLE, sy-vline,
  WA_INOMTKTPARAM-OILPHYSPARAMCHECKSTYLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INOMTKTPARAM 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_INOMTKTPARAM 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_INOMTKTPARAM INTO WA_INOMTKTPARAM.


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

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

*Conversion exit CUNIT, internal->external for field OILPHYSPARAMUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_INOMTKTPARAM-OILPHYSPARAMUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INOMTKTPARAM-OILPHYSPARAMUOM.
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_INOMTKTPARAM_STR, 
MANDT TYPE STRING,
NOMINATIONDOC TYPE STRING,
NOMINATIONDOCITEM TYPE STRING,
NOMINATIONTICKETKEY TYPE STRING,
NOMINATIONTICKETITEM TYPE STRING,
NOMINATIONTICKETVERSION TYPE STRING,
OILPHYSPARAMNAME TYPE STRING,
OILPHYSPARAMFIELDNAME TYPE STRING,
OILPHYSPARAMUOMFIELDNAME TYPE STRING,
OILPHYSPARAMDESCSTYLE TYPE STRING,
OILPHYSPARAMCHECKSTYLE TYPE STRING,
OILPHYSPARAMVALUESTYLE TYPE STRING,
OILPHYSPARAMUNITSTYLE TYPE STRING,
OILPHYSPARAMDESC TYPE STRING,
ISOILPHYSPARAM TYPE STRING,
OILPHYSPARAMVALUE TYPE STRING,
OILPHYSPARAMUOM TYPE STRING,
OILPHYSPARAMUOMDESC TYPE STRING,
OILPHYSPARAMVALUETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INOMTKTPARAM_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_INOMTKTPARAM_STR-MANDT sy-vline 
WA_INOMTKTPARAM_STR-NOMINATIONDOC sy-vline 
WA_INOMTKTPARAM_STR-NOMINATIONDOCITEM sy-vline 
WA_INOMTKTPARAM_STR-NOMINATIONTICKETKEY sy-vline 
WA_INOMTKTPARAM_STR-NOMINATIONTICKETITEM sy-vline 
WA_INOMTKTPARAM_STR-NOMINATIONTICKETVERSION sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMNAME sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMFIELDNAME sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMUOMFIELDNAME sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMDESCSTYLE sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMCHECKSTYLE sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMVALUESTYLE sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMUNITSTYLE sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMDESC sy-vline 
WA_INOMTKTPARAM_STR-ISOILPHYSPARAM sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMVALUE sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMUOM sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMUOMDESC sy-vline 
WA_INOMTKTPARAM_STR-OILPHYSPARAMVALUETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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