ABAP Select data from SAP table CMMOI_S_TSW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMOI_S_TSW
*  INTO TABLE @DATA(IT_CMMOI_S_TSW2).
*--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_CMMOI_S_TSW INDEX 1 INTO DATA(WA_CMMOI_S_TSW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMOI_S_TSW>-CMMDTYNOMINATIONKEY = 1.
<CMMOI_S_TSW>-CMMDTYNOMINATIONITEM = 1.
<CMMOI_S_TSW>-CMMDTYNOMINATIONNUMBER = 1.
<CMMOI_S_TSW>-GASSHIPPER = 1.
<CMMOI_S_TSW>-NOMINATIONCARRIER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMOI_S_TSW-NOMINATIONMODEOFTRANSPORT, sy-vline,
  WA_CMMOI_S_TSW-POSTINGDATE, sy-vline,
  WA_CMMOI_S_TSW-NOMINATIONTICKETKEY, sy-vline,
  WA_CMMOI_S_TSW-NOMINATIONTYPE, sy-vline,
  WA_CMMOI_S_TSW-SOURCEMATERIAL, sy-vline,
  WA_CMMOI_S_TSW-REFERENCEDOCUMENTINDICATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMOI_S_TSW 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_CMMOI_S_TSW 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_CMMOI_S_TSW INTO WA_CMMOI_S_TSW.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LASTUPDTDNOMINATIONREFDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMOI_S_TSW-LASTUPDTDNOMINATIONREFDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMOI_S_TSW-LASTUPDTDNOMINATIONREFDOCUMENT.
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_CMMOI_S_TSW_STR, 
CMMDTYNOMINATIONKEY TYPE STRING,
CMMDTYNOMINATIONITEM TYPE STRING,
CMMDTYNOMINATIONNUMBER TYPE STRING,
GASSHIPPER TYPE STRING,
NOMINATIONCARRIER TYPE STRING,
NOMINATIONMODEOFTRANSPORT TYPE STRING,
POSTINGDATE TYPE STRING,
NOMINATIONTICKETKEY TYPE STRING,
NOMINATIONTYPE TYPE STRING,
SOURCEMATERIAL TYPE STRING,
REFERENCEDOCUMENTINDICATOR TYPE STRING,
NOMINATIONSCHEDULETYPE TYPE STRING,
NOMINATIONREFERENCEDOCUMENT TYPE STRING,
NOMINATIONFUNCREFERENCEDOCITEM TYPE STRING,
OILLOCATIONPARTNERSTORAGELOC TYPE STRING,
TRANSPORTSYSTEM TYPE STRING,
NOMINATIONITEMISCOMPLETE TYPE STRING,
NOMINATIONISDELETED TYPE STRING,
NOMINATIONISUPDATED TYPE STRING,
QUICKCONFIRM TYPE STRING,
COMMODITYNOMINATIONLOCATION TYPE STRING,
LASTUPDTDREFDOCINDICATORCODE TYPE STRING,
LASTUPDTDNOMINATIONREFDOCUMENT TYPE STRING,
LASTUPDTDNOMINATIONREFDOCITEM TYPE STRING,
LASTUPDTDNOMINATIONISCOMPLETED TYPE STRING,
NOMINATIONTICKETITEM TYPE STRING,
NOMINATIONTICKETVERSION TYPE STRING,
NOMINATIONTICKETPURPOSE TYPE STRING,
LASTUPDTDNOMINATIONTICKETPRPS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMOI_S_TSW_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_CMMOI_S_TSW_STR-CMMDTYNOMINATIONKEY sy-vline 
WA_CMMOI_S_TSW_STR-CMMDTYNOMINATIONITEM sy-vline 
WA_CMMOI_S_TSW_STR-CMMDTYNOMINATIONNUMBER sy-vline 
WA_CMMOI_S_TSW_STR-GASSHIPPER sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONCARRIER sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONMODEOFTRANSPORT sy-vline 
WA_CMMOI_S_TSW_STR-POSTINGDATE sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONTICKETKEY sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONTYPE sy-vline 
WA_CMMOI_S_TSW_STR-SOURCEMATERIAL sy-vline 
WA_CMMOI_S_TSW_STR-REFERENCEDOCUMENTINDICATOR sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONSCHEDULETYPE sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONREFERENCEDOCUMENT sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONFUNCREFERENCEDOCITEM sy-vline 
WA_CMMOI_S_TSW_STR-OILLOCATIONPARTNERSTORAGELOC sy-vline 
WA_CMMOI_S_TSW_STR-TRANSPORTSYSTEM sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONITEMISCOMPLETE sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONISDELETED sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONISUPDATED sy-vline 
WA_CMMOI_S_TSW_STR-QUICKCONFIRM sy-vline 
WA_CMMOI_S_TSW_STR-COMMODITYNOMINATIONLOCATION sy-vline 
WA_CMMOI_S_TSW_STR-LASTUPDTDREFDOCINDICATORCODE sy-vline 
WA_CMMOI_S_TSW_STR-LASTUPDTDNOMINATIONREFDOCUMENT sy-vline 
WA_CMMOI_S_TSW_STR-LASTUPDTDNOMINATIONREFDOCITEM sy-vline 
WA_CMMOI_S_TSW_STR-LASTUPDTDNOMINATIONISCOMPLETED sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONTICKETITEM sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONTICKETVERSION sy-vline 
WA_CMMOI_S_TSW_STR-NOMINATIONTICKETPURPOSE sy-vline 
WA_CMMOI_S_TSW_STR-LASTUPDTDNOMINATIONTICKETPRPS sy-vline      INTO ld_text SEPARATED BY SPACE.

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