ABAP Select data from SAP table P2RN_PRAP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RN_PRAP 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 P2RN_PRAP. 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 P2RN_PRAP 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_P2RN_PRAP TYPE STANDARD TABLE OF P2RN_PRAP,
      WA_P2RN_PRAP TYPE P2RN_PRAP,
      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: <P2RN_PRAP> TYPE P2RN_PRAP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RN_PRAP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RN_PRAP
  INTO TABLE IT_P2RN_PRAP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RN_PRAP
*  INTO TABLE @DATA(IT_P2RN_PRAP2).
*--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_P2RN_PRAP INDEX 1 INTO DATA(WA_P2RN_PRAP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RN_PRAP ASSIGNING <P2RN_PRAP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RN_PRAP>-MANDT = 1.
<P2RN_PRAP>-DCT_PERNR = 1.
<P2RN_PRAP>-DCT_SEQNR = 1.
<P2RN_PRAP>-DCT_ROWID = 1.
<P2RN_PRAP>-PRNSP = 1.

ENDLOOP.

LOOP AT IT_P2RN_PRAP INTO WA_P2RN_PRAP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RN_PRAP-BEGDA, sy-vline,
  WA_P2RN_PRAP-ENDDA, sy-vline,
  WA_P2RN_PRAP-DDATE, sy-vline,
  WA_P2RN_PRAP-FAMST, sy-vline,
  WA_P2RN_PRAP-FAMDT, sy-vline,
  WA_P2RN_PRAP-FANAP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RN_PRAP 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_P2RN_PRAP 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_P2RN_PRAP INTO WA_P2RN_PRAP.


*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_P2RN_PRAP_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
PRNSP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
DDATE TYPE STRING,
FAMST TYPE STRING,
FAMDT TYPE STRING,
FANAP TYPE STRING,
NPFXP TYPE STRING,
INITP TYPE STRING,
INVEX TYPE STRING,
NUMIR TYPE STRING,
IRBEG TYPE STRING,
IREND TYPE STRING,
IRRES TYPE STRING,
IRTYP TYPE STRING,
IPBEG TYPE STRING,
IPEND TYPE STRING,
IPPAR TYPE STRING,
INKKD TYPE STRING,
CAOCL TYPE STRING,
OCCOD TYPE STRING,
CNTCD TYPE STRING,
PRDCD TYPE STRING,
PRDVA TYPE STRING,
PRBEG TYPE STRING,
VAEND TYPE STRING,
PPBEG TYPE STRING,
BWGTP TYPE STRING,
AUNWK TYPE STRING,
PRDCL TYPE STRING,
GESCP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RN_PRAP_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_P2RN_PRAP_STR-MANDT sy-vline 
WA_P2RN_PRAP_STR-DCT_PERNR sy-vline 
WA_P2RN_PRAP_STR-DCT_SEQNR sy-vline 
WA_P2RN_PRAP_STR-DCT_ROWID sy-vline 
WA_P2RN_PRAP_STR-PRNSP sy-vline 
WA_P2RN_PRAP_STR-BEGDA sy-vline 
WA_P2RN_PRAP_STR-ENDDA sy-vline 
WA_P2RN_PRAP_STR-DDATE sy-vline 
WA_P2RN_PRAP_STR-FAMST sy-vline 
WA_P2RN_PRAP_STR-FAMDT sy-vline 
WA_P2RN_PRAP_STR-FANAP sy-vline 
WA_P2RN_PRAP_STR-NPFXP sy-vline 
WA_P2RN_PRAP_STR-INITP sy-vline 
WA_P2RN_PRAP_STR-INVEX sy-vline 
WA_P2RN_PRAP_STR-NUMIR sy-vline 
WA_P2RN_PRAP_STR-IRBEG sy-vline 
WA_P2RN_PRAP_STR-IREND sy-vline 
WA_P2RN_PRAP_STR-IRRES sy-vline 
WA_P2RN_PRAP_STR-IRTYP sy-vline 
WA_P2RN_PRAP_STR-IPBEG sy-vline 
WA_P2RN_PRAP_STR-IPEND sy-vline 
WA_P2RN_PRAP_STR-IPPAR sy-vline 
WA_P2RN_PRAP_STR-INKKD sy-vline 
WA_P2RN_PRAP_STR-CAOCL sy-vline 
WA_P2RN_PRAP_STR-OCCOD sy-vline 
WA_P2RN_PRAP_STR-CNTCD sy-vline 
WA_P2RN_PRAP_STR-PRDCD sy-vline 
WA_P2RN_PRAP_STR-PRDVA sy-vline 
WA_P2RN_PRAP_STR-PRBEG sy-vline 
WA_P2RN_PRAP_STR-VAEND sy-vline 
WA_P2RN_PRAP_STR-PPBEG sy-vline 
WA_P2RN_PRAP_STR-BWGTP sy-vline 
WA_P2RN_PRAP_STR-AUNWK sy-vline 
WA_P2RN_PRAP_STR-PRDCL sy-vline 
WA_P2RN_PRAP_STR-GESCP sy-vline      INTO ld_text SEPARATED BY SPACE.

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