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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/S_CASHDISCOUNTERMS_COM
*  INTO TABLE @DATA(IT_/SCMTMS/S_CASHDISCOUNTERMS_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_/SCMTMS/S_CASHDISCOUNTERMS_COM INDEX 1 INTO DATA(WA_/SCMTMS/S_CASHDISCOUNTERMS_COM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/S_CASHDISCOUNTERMS_COM>-NODE_ID = 1.
</SCMTMS/S_CASHDISCOUNTERMS_COM>-PARENT_NODE_ID = 1.
</SCMTMS/S_CASHDISCOUNTERMS_COM>-BO_KEY = 1.
</SCMTMS/S_CASHDISCOUNTERMS_COM>-NODE_KEY = 1.
</SCMTMS/S_CASHDISCOUNTERMS_COM>-TCCLASS037 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-CHRGCATCD021, sy-vline,
  WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-CHRGCATCD021_I, sy-vline,
  WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-DISCTERMCD026, sy-vline,
  WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-LID026, sy-vline,
  WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-LVID026, sy-vline,
  WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-LAID026, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/S_CASHDISCOUNTERMS_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_/SCMTMS/S_CASHDISCOUNTERMS_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_/SCMTMS/S_CASHDISCOUNTERMS_COM INTO WA_/SCMTMS/S_CASHDISCOUNTERMS_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 ISOLA, internal->external for field LANGUAGE_CODE_M
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-LANGUAGE_CODE_M
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/S_CASHDISCOUNTERMS_COM-LANGUAGE_CODE_M.
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/S_CASHDISCOUNTERMS_COM_STR, 
NODE_ID TYPE STRING,
PARENT_NODE_ID TYPE STRING,
BO_KEY TYPE STRING,
NODE_KEY TYPE STRING,
TCCLASS037 TYPE STRING,
CHRGCATCD021 TYPE STRING,
CHRGCATCD021_I TYPE STRING,
DISCTERMCD026 TYPE STRING,
LID026 TYPE STRING,
LVID026 TYPE STRING,
LAID026 TYPE STRING,
LASID026 TYPE STRING,
LAS2ID026 TYPE STRING,
DISCTERMCD026_I TYPE STRING,
PAYMNTBALNDT TYPE STRING,
DAYSVALUEMAX TYPE STRING,
DAYOFMONTHVALMAX TYPE STRING,
MONTHOFFSETMAX TYPE STRING,
ENDDATEMAX TYPE STRING,
PERCENTMAX TYPE STRING,
DAYSVALUENOR TYPE STRING,
DAYOFMONTHVALNOR TYPE STRING,
MONTHOFFSETNOR TYPE STRING,
ENDDATENOR TYPE STRING,
PERCENTNOR TYPE STRING,
FULLPAYMDUEDY TYPE STRING,
FULLPAYDAYOMO TYPE STRING,
FULLPAYMONTHO TYPE STRING,
FULLPAYENDDAT TYPE STRING,
LANGUAGE_CODE_M TYPE STRING,
DESCRIPTION_M TYPE STRING,
EEW_TCH_CSHDSC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/S_CASHDISCOUNTERMS_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_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-NODE_ID sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-PARENT_NODE_ID sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-BO_KEY sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-NODE_KEY sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-TCCLASS037 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-CHRGCATCD021 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-CHRGCATCD021_I sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DISCTERMCD026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LID026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LVID026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LAID026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LASID026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LAS2ID026 sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DISCTERMCD026_I sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-PAYMNTBALNDT sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DAYSVALUEMAX sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DAYOFMONTHVALMAX sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-MONTHOFFSETMAX sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-ENDDATEMAX sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-PERCENTMAX sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DAYSVALUENOR sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DAYOFMONTHVALNOR sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-MONTHOFFSETNOR sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-ENDDATENOR sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-PERCENTNOR sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-FULLPAYMDUEDY sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-FULLPAYDAYOMO sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-FULLPAYMONTHO sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-FULLPAYENDDAT sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-LANGUAGE_CODE_M sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-DESCRIPTION_M sy-vline 
WA_/SCMTMS/S_CASHDISCOUNTERMS_COM_STR-EEW_TCH_CSHDSC sy-vline      INTO ld_text SEPARATED BY SPACE.

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