ABAP Select data from SAP table /SCMTMS/D_TCDITM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCMTMS/D_TCDITM 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 /SCMTMS/D_TCDITM. 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 /SCMTMS/D_TCDITM 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_/SCMTMS/D_TCDITM TYPE STANDARD TABLE OF /SCMTMS/D_TCDITM,
      WA_/SCMTMS/D_TCDITM TYPE /SCMTMS/D_TCDITM,
      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: </SCMTMS/D_TCDITM> TYPE /SCMTMS/D_TCDITM.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCMTMS/D_TCDITM
  INTO TABLE IT_/SCMTMS/D_TCDITM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/D_TCDITM
*  INTO TABLE @DATA(IT_/SCMTMS/D_TCDITM2).
*--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_/SCMTMS/D_TCDITM INDEX 1 INTO DATA(WA_/SCMTMS/D_TCDITM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCMTMS/D_TCDITM ASSIGNING </SCMTMS/D_TCDITM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/D_TCDITM>-MANDT = 1.
</SCMTMS/D_TCDITM>-DB_KEY = 1.
</SCMTMS/D_TCDITM>-PARENT_KEY = 1.
</SCMTMS/D_TCDITM>-HOST_BO_KEY = 1.
</SCMTMS/D_TCDITM>-HOST_NODE_KEY = 1.

ENDLOOP.

LOOP AT IT_/SCMTMS/D_TCDITM INTO WA_/SCMTMS/D_TCDITM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/D_TCDITM-HOST_KEY, sy-vline,
  WA_/SCMTMS/D_TCDITM-DIST_ITEM_CAT, sy-vline,
  WA_/SCMTMS/D_TCDITM-AMOUNT, sy-vline,
  WA_/SCMTMS/D_TCDITM-CURRCODE016, sy-vline,
  WA_/SCMTMS/D_TCDITM-QTY, sy-vline,
  WA_/SCMTMS/D_TCDITM-QTY_UNI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/D_TCDITM 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_/SCMTMS/D_TCDITM 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_/SCMTMS/D_TCDITM INTO WA_/SCMTMS/D_TCDITM.


*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 QTYRN, internal->external for field QTY
CALL FUNCTION 'CONVERSION_EXIT_QTYRN_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/D_TCDITM-QTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/D_TCDITM-QTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QTY_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/D_TCDITM-QTY_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/D_TCDITM-QTY_UNI.
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_/SCMTMS/D_TCDITM_STR, 
MANDT TYPE STRING,
DB_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
HOST_BO_KEY TYPE STRING,
HOST_NODE_KEY TYPE STRING,
HOST_KEY TYPE STRING,
DIST_ITEM_CAT TYPE STRING,
AMOUNT TYPE STRING,
CURRCODE016 TYPE STRING,
QTY TYPE STRING,
QTY_UNI TYPE STRING,
REF_KEY TYPE STRING,
REF_ROOT_KEY TYPE STRING,
REF_BO_KEY TYPE STRING,
ORIG_REF_ROOT TYPE STRING,
ORIG_REF_BO TYPE STRING,
EEW_DISTR_IT TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/D_TCDITM_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_/SCMTMS/D_TCDITM_STR-MANDT sy-vline 
WA_/SCMTMS/D_TCDITM_STR-DB_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-PARENT_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-HOST_BO_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-HOST_NODE_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-HOST_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-DIST_ITEM_CAT sy-vline 
WA_/SCMTMS/D_TCDITM_STR-AMOUNT sy-vline 
WA_/SCMTMS/D_TCDITM_STR-CURRCODE016 sy-vline 
WA_/SCMTMS/D_TCDITM_STR-QTY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-QTY_UNI sy-vline 
WA_/SCMTMS/D_TCDITM_STR-REF_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-REF_ROOT_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-REF_BO_KEY sy-vline 
WA_/SCMTMS/D_TCDITM_STR-ORIG_REF_ROOT sy-vline 
WA_/SCMTMS/D_TCDITM_STR-ORIG_REF_BO sy-vline 
WA_/SCMTMS/D_TCDITM_STR-EEW_DISTR_IT sy-vline 
WA_/SCMTMS/D_TCDITM_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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