ABAP Select data from SAP table P2RF_FPWP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RF_FPWP 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 P2RF_FPWP. 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 P2RF_FPWP 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_P2RF_FPWP TYPE STANDARD TABLE OF P2RF_FPWP,
      WA_P2RF_FPWP TYPE P2RF_FPWP,
      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: <P2RF_FPWP> TYPE P2RF_FPWP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RF_FPWP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RF_FPWP
  INTO TABLE IT_P2RF_FPWP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RF_FPWP
*  INTO TABLE @DATA(IT_P2RF_FPWP2).
*--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_P2RF_FPWP INDEX 1 INTO DATA(WA_P2RF_FPWP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RF_FPWP ASSIGNING <P2RF_FPWP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RF_FPWP>-MANDT = 1.
<P2RF_FPWP>-DCT_PERNR = 1.
<P2RF_FPWP>-DCT_SEQNR = 1.
<P2RF_FPWP>-DCT_ROWID = 1.
<P2RF_FPWP>-APZNR = 1.

ENDLOOP.

LOOP AT IT_P2RF_FPWP INTO WA_P2RF_FPWP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RF_FPWP-BEGDA, sy-vline,
  WA_P2RF_FPWP-ENDDA, sy-vline,
  WA_P2RF_FPWP-CORPS, sy-vline,
  WA_P2RF_FPWP-GRADE, sy-vline,
  WA_P2RF_FPWP-KZTIM, sy-vline,
  WA_P2RF_FPWP-NUMER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RF_FPWP 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_P2RF_FPWP 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_P2RF_FPWP INTO WA_P2RF_FPWP.


*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_P2RF_FPWP_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
APZNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
CORPS TYPE STRING,
GRADE TYPE STRING,
KZTIM TYPE STRING,
NUMER TYPE STRING,
DENUM TYPE STRING,
PSSTT TYPE STRING,
RESZN TYPE STRING,
PSADM TYPE STRING,
CREMU TYPE STRING,
CFINS TYPE STRING,
DFINS TYPE STRING,
CPPSD TYPE STRING,
ORGAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RF_FPWP_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_P2RF_FPWP_STR-MANDT sy-vline 
WA_P2RF_FPWP_STR-DCT_PERNR sy-vline 
WA_P2RF_FPWP_STR-DCT_SEQNR sy-vline 
WA_P2RF_FPWP_STR-DCT_ROWID sy-vline 
WA_P2RF_FPWP_STR-APZNR sy-vline 
WA_P2RF_FPWP_STR-BEGDA sy-vline 
WA_P2RF_FPWP_STR-ENDDA sy-vline 
WA_P2RF_FPWP_STR-CORPS sy-vline 
WA_P2RF_FPWP_STR-GRADE sy-vline 
WA_P2RF_FPWP_STR-KZTIM sy-vline 
WA_P2RF_FPWP_STR-NUMER sy-vline 
WA_P2RF_FPWP_STR-DENUM sy-vline 
WA_P2RF_FPWP_STR-PSSTT sy-vline 
WA_P2RF_FPWP_STR-RESZN sy-vline 
WA_P2RF_FPWP_STR-PSADM sy-vline 
WA_P2RF_FPWP_STR-CREMU sy-vline 
WA_P2RF_FPWP_STR-CFINS sy-vline 
WA_P2RF_FPWP_STR-DFINS sy-vline 
WA_P2RF_FPWP_STR-CPPSD sy-vline 
WA_P2RF_FPWP_STR-ORGAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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