ABAP Select data from SAP table RFP2P_ITEMS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFP2P_ITEMS 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 RFP2P_ITEMS. 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 RFP2P_ITEMS 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_RFP2P_ITEMS TYPE STANDARD TABLE OF RFP2P_ITEMS,
      WA_RFP2P_ITEMS TYPE RFP2P_ITEMS,
      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: <RFP2P_ITEMS> TYPE RFP2P_ITEMS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFP2P_ITEMS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFP2P_ITEMS
  INTO TABLE IT_RFP2P_ITEMS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFP2P_ITEMS
*  INTO TABLE @DATA(IT_RFP2P_ITEMS2).
*--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_RFP2P_ITEMS INDEX 1 INTO DATA(WA_RFP2P_ITEMS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFP2P_ITEMS ASSIGNING <RFP2P_ITEMS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFP2P_ITEMS>-PPKEY = 1.
<RFP2P_ITEMS>-OPBEL = 1.
<RFP2P_ITEMS>-OPUPW = 1.
<RFP2P_ITEMS>-OPUPK = 1.
<RFP2P_ITEMS>-OPUPZ = 1.

ENDLOOP.

LOOP AT IT_RFP2P_ITEMS INTO WA_RFP2P_ITEMS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFP2P_ITEMS-BETRZ, sy-vline,
  WA_RFP2P_ITEMS-BETRH, sy-vline,
  WA_RFP2P_ITEMS-VKONT, sy-vline,
  WA_RFP2P_ITEMS-VTREF, sy-vline,
  WA_RFP2P_ITEMS-HVORG, sy-vline,
  WA_RFP2P_ITEMS-TVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFP2P_ITEMS 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_RFP2P_ITEMS 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_RFP2P_ITEMS INTO WA_RFP2P_ITEMS.


*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 PPKEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-PPKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-PPKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEBT_SET_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFP2P_ITEMS-DEBT_SET_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFP2P_ITEMS-DEBT_SET_NUMBER.
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_RFP2P_ITEMS_STR, 
PPKEY TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BETRZ TYPE STRING,
BETRH TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
BLART TYPE STRING,
BUDAT TYPE STRING,
FAEDN TYPE STRING,
HVTXT TYPE STRING,
TVTXT TYPE STRING,
AUGBL TYPE STRING,
AUGRD TYPE STRING,
AUGRD_TXT TYPE STRING,
XSUBP TYPE STRING,
DEBT_SET_NUMBER TYPE STRING,
DEBT_SET_DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFP2P_ITEMS_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_RFP2P_ITEMS_STR-PPKEY sy-vline 
WA_RFP2P_ITEMS_STR-OPBEL sy-vline 
WA_RFP2P_ITEMS_STR-OPUPW sy-vline 
WA_RFP2P_ITEMS_STR-OPUPK sy-vline 
WA_RFP2P_ITEMS_STR-OPUPZ sy-vline 
WA_RFP2P_ITEMS_STR-BETRZ sy-vline 
WA_RFP2P_ITEMS_STR-BETRH sy-vline 
WA_RFP2P_ITEMS_STR-VKONT sy-vline 
WA_RFP2P_ITEMS_STR-VTREF sy-vline 
WA_RFP2P_ITEMS_STR-HVORG sy-vline 
WA_RFP2P_ITEMS_STR-TVORG sy-vline 
WA_RFP2P_ITEMS_STR-BLART sy-vline 
WA_RFP2P_ITEMS_STR-BUDAT sy-vline 
WA_RFP2P_ITEMS_STR-FAEDN sy-vline 
WA_RFP2P_ITEMS_STR-HVTXT sy-vline 
WA_RFP2P_ITEMS_STR-TVTXT sy-vline 
WA_RFP2P_ITEMS_STR-AUGBL sy-vline 
WA_RFP2P_ITEMS_STR-AUGRD sy-vline 
WA_RFP2P_ITEMS_STR-AUGRD_TXT sy-vline 
WA_RFP2P_ITEMS_STR-XSUBP sy-vline 
WA_RFP2P_ITEMS_STR-DEBT_SET_NUMBER sy-vline 
WA_RFP2P_ITEMS_STR-DEBT_SET_DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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