ABAP Select data from SAP table /SCMTMS/S_CURRENCY_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_CURRENCY_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_CURRENCY_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_CURRENCY_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_CURRENCY_COM TYPE STANDARD TABLE OF /SCMTMS/S_CURRENCY_COM,
      WA_/SCMTMS/S_CURRENCY_COM TYPE /SCMTMS/S_CURRENCY_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_CURRENCY_COM> TYPE /SCMTMS/S_CURRENCY_COM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/S_CURRENCY_COM
*  INTO TABLE @DATA(IT_/SCMTMS/S_CURRENCY_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_CURRENCY_COM INDEX 1 INTO DATA(WA_/SCMTMS/S_CURRENCY_COM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/S_CURRENCY_COM>-NODE_ID = 1.
</SCMTMS/S_CURRENCY_COM>-PARENT_NODE_ID = 1.
</SCMTMS/S_CURRENCY_COM>-BO_KEY = 1.
</SCMTMS/S_CURRENCY_COM>-NODE_KEY = 1.
</SCMTMS/S_CURRENCY_COM>-CURROLE015 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/S_CURRENCY_COM-CURRCODE016, sy-vline,
  WA_/SCMTMS/S_CURRENCY_COM-CURRUSGCD017, sy-vline,
  WA_/SCMTMS/S_CURRENCY_COM-EXCHGRATETCO054, sy-vline,
  WA_/SCMTMS/S_CURRENCY_COM-LID054, sy-vline,
  WA_/SCMTMS/S_CURRENCY_COM-LVID054, sy-vline,
  WA_/SCMTMS/S_CURRENCY_COM-LAID054, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/S_CURRENCY_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_CURRENCY_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_CURRENCY_COM INTO WA_/SCMTMS/S_CURRENCY_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.
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_CURRENCY_COM_STR, 
NODE_ID TYPE STRING,
PARENT_NODE_ID TYPE STRING,
BO_KEY TYPE STRING,
NODE_KEY TYPE STRING,
CURROLE015 TYPE STRING,
CURRCODE016 TYPE STRING,
CURRUSGCD017 TYPE STRING,
EXCHGRATETCO054 TYPE STRING,
LID054 TYPE STRING,
LVID054 TYPE STRING,
LAID054 TYPE STRING,
LASID054 TYPE STRING,
LAS2ID054 TYPE STRING,
EXCHGRATETCO05_I TYPE STRING,
EEW_GEN_CURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/S_CURRENCY_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_CURRENCY_COM_STR-NODE_ID sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-PARENT_NODE_ID sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-BO_KEY sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-NODE_KEY sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-CURROLE015 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-CURRCODE016 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-CURRUSGCD017 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-EXCHGRATETCO054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-LID054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-LVID054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-LAID054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-LASID054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-LAS2ID054 sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-EXCHGRATETCO05_I sy-vline 
WA_/SCMTMS/S_CURRENCY_COM_STR-EEW_GEN_CURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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