ABAP Select data from SAP table V_RDBPA_FLW_2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_RDBPA_FLW_2 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 V_RDBPA_FLW_2. 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 V_RDBPA_FLW_2 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_V_RDBPA_FLW_2 TYPE STANDARD TABLE OF V_RDBPA_FLW_2,
      WA_V_RDBPA_FLW_2 TYPE V_RDBPA_FLW_2,
      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: <V_RDBPA_FLW_2> TYPE V_RDBPA_FLW_2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_RDBPA_FLW_2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_RDBPA_FLW_2
  INTO TABLE IT_V_RDBPA_FLW_2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_RDBPA_FLW_2
*  INTO TABLE @DATA(IT_V_RDBPA_FLW_22).
*--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_V_RDBPA_FLW_2 INDEX 1 INTO DATA(WA_V_RDBPA_FLW_22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_RDBPA_FLW_2 ASSIGNING <V_RDBPA_FLW_2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_RDBPA_FLW_2>-MANDT = 1.
<V_RDBPA_FLW_2>-EVALPROC1 = 1.
<V_RDBPA_FLW_2>-KEYDATE = 1.
<V_RDBPA_FLW_2>-KEYFIGURE = 1.
<V_RDBPA_FLW_2>-RECORDNR = 1.

ENDLOOP.

LOOP AT IT_V_RDBPA_FLW_2 INTO WA_V_RDBPA_FLW_2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_RDBPA_FLW_2-STATE, sy-vline,
  WA_V_RDBPA_FLW_2-OBJNR, sy-vline,
  WA_V_RDBPA_FLW_2-SEGMTYPE, sy-vline,
  WA_V_RDBPA_FLW_2-SEGMNR, sy-vline,
  WA_V_RDBPA_FLW_2-CURRENCY, sy-vline,
  WA_V_RDBPA_FLW_2-FLOWTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_RDBPA_FLW_2 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_V_RDBPA_FLW_2 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_V_RDBPA_FLW_2 INTO WA_V_RDBPA_FLW_2.


*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 1CEP1, internal->external for field EVALPROC1
CALL FUNCTION 'CONVERSION_EXIT_1CEP1_OUTPUT'
  EXPORTING
    input =                      WA_V_RDBPA_FLW_2-EVALPROC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RDBPA_FLW_2-EVALPROC1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALFAN, internal->external for field KEYFIGURE
CALL FUNCTION 'CONVERSION_EXIT_ALFAN_OUTPUT'
  EXPORTING
    input =                      WA_V_RDBPA_FLW_2-KEYFIGURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RDBPA_FLW_2-KEYFIGURE.
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_V_RDBPA_FLW_2_STR, 
MANDT TYPE STRING,
EVALPROC1 TYPE STRING,
KEYDATE TYPE STRING,
KEYFIGURE TYPE STRING,
RECORDNR TYPE STRING,
STATE TYPE STRING,
OBJNR TYPE STRING,
SEGMTYPE TYPE STRING,
SEGMNR TYPE STRING,
CURRENCY TYPE STRING,
FLOWTYPE TYPE STRING,
VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_RDBPA_FLW_2_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_V_RDBPA_FLW_2_STR-MANDT sy-vline 
WA_V_RDBPA_FLW_2_STR-EVALPROC1 sy-vline 
WA_V_RDBPA_FLW_2_STR-KEYDATE sy-vline 
WA_V_RDBPA_FLW_2_STR-KEYFIGURE sy-vline 
WA_V_RDBPA_FLW_2_STR-RECORDNR sy-vline 
WA_V_RDBPA_FLW_2_STR-STATE sy-vline 
WA_V_RDBPA_FLW_2_STR-OBJNR sy-vline 
WA_V_RDBPA_FLW_2_STR-SEGMTYPE sy-vline 
WA_V_RDBPA_FLW_2_STR-SEGMNR sy-vline 
WA_V_RDBPA_FLW_2_STR-CURRENCY sy-vline 
WA_V_RDBPA_FLW_2_STR-FLOWTYPE sy-vline 
WA_V_RDBPA_FLW_2_STR-VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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