ABAP Select data from SAP table /RTF/_S_SOURCE_FIELDS_02 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /RTF/_S_SOURCE_FIELDS_02 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 /RTF/_S_SOURCE_FIELDS_02. 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 /RTF/_S_SOURCE_FIELDS_02 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_/RTF/_S_SOURCE_FIELDS_02 TYPE STANDARD TABLE OF /RTF/_S_SOURCE_FIELDS_02,
      WA_/RTF/_S_SOURCE_FIELDS_02 TYPE /RTF/_S_SOURCE_FIELDS_02,
      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: </RTF/_S_SOURCE_FIELDS_02> TYPE /RTF/_S_SOURCE_FIELDS_02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/RTF/_S_SOURCE_FIELDS_02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /RTF/_S_SOURCE_FIELDS_02
  INTO TABLE IT_/RTF/_S_SOURCE_FIELDS_02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /RTF/_S_SOURCE_FIELDS_02
*  INTO TABLE @DATA(IT_/RTF/_S_SOURCE_FIELDS_022).
*--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_/RTF/_S_SOURCE_FIELDS_02 INDEX 1 INTO DATA(WA_/RTF/_S_SOURCE_FIELDS_022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/RTF/_S_SOURCE_FIELDS_02 ASSIGNING </RTF/_S_SOURCE_FIELDS_02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</RTF/_S_SOURCE_FIELDS_02>-PROCESSKEY = 1.
</RTF/_S_SOURCE_FIELDS_02>-RT_PROMO = 1.
</RTF/_S_SOURCE_FIELDS_02>-CPPVLC = 1.
</RTF/_S_SOURCE_FIELDS_02>-CPSVLC = 1.
</RTF/_S_SOURCE_FIELDS_02>-CPSTLC = 1.

ENDLOOP.

LOOP AT IT_/RTF/_S_SOURCE_FIELDS_02 INTO WA_/RTF/_S_SOURCE_FIELDS_02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/RTF/_S_SOURCE_FIELDS_02-LOC_CURRCY, sy-vline,
  WA_/RTF/_S_SOURCE_FIELDS_02-BASE_UOM, sy-vline,
  WA_/RTF/_S_SOURCE_FIELDS_02-NUMERATOR, sy-vline,
  WA_/RTF/_S_SOURCE_FIELDS_02-DENOMINTR, sy-vline,
  WA_/RTF/_S_SOURCE_FIELDS_02-EXCHG_RATE, sy-vline,
  WA_/RTF/_S_SOURCE_FIELDS_02-CPQUAOU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/RTF/_S_SOURCE_FIELDS_02 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_/RTF/_S_SOURCE_FIELDS_02 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_/RTF/_S_SOURCE_FIELDS_02 INTO WA_/RTF/_S_SOURCE_FIELDS_02.


*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 CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/RTF/_S_SOURCE_FIELDS_02-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/RTF/_S_SOURCE_FIELDS_02-BASE_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PO_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/RTF/_S_SOURCE_FIELDS_02-PO_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/RTF/_S_SOURCE_FIELDS_02-PO_UNIT.
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_/RTF/_S_SOURCE_FIELDS_02_STR, 
PROCESSKEY TYPE STRING,
RT_PROMO TYPE STRING,
CPPVLC TYPE STRING,
CPSVLC TYPE STRING,
CPSTLC TYPE STRING,
LOC_CURRCY TYPE STRING,
BASE_UOM TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINTR TYPE STRING,
EXCHG_RATE TYPE STRING,
CPQUAOU TYPE STRING,
CPDEOGPVOC TYPE STRING,
CPDEOGQUOU TYPE STRING,
CPPVOC TYPE STRING,
DOC_DATE TYPE STRING,
NO_SCL TYPE STRING,
ORDER_CURR TYPE STRING,
PO_UNIT TYPE STRING,
PSTNG_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/RTF/_S_SOURCE_FIELDS_02_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_/RTF/_S_SOURCE_FIELDS_02_STR-PROCESSKEY sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-RT_PROMO sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPPVLC sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPSVLC sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPSTLC sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-LOC_CURRCY sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-BASE_UOM sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-NUMERATOR sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-DENOMINTR sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-EXCHG_RATE sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPQUAOU sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPDEOGPVOC sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPDEOGQUOU sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-CPPVOC sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-DOC_DATE sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-NO_SCL sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-ORDER_CURR sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-PO_UNIT sy-vline 
WA_/RTF/_S_SOURCE_FIELDS_02_STR-PSTNG_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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