ABAP Select data from SAP table P2RN_SV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RN_SV 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_SV. 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_SV 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_SV TYPE STANDARD TABLE OF P2RN_SV,
      WA_P2RN_SV TYPE P2RN_SV,
      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_SV> TYPE P2RN_SV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RN_SV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RN_SV
  INTO TABLE IT_P2RN_SV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RN_SV
*  INTO TABLE @DATA(IT_P2RN_SV2).
*--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_SV INDEX 1 INTO DATA(WA_P2RN_SV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RN_SV ASSIGNING <P2RN_SV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RN_SV>-MANDT = 1.
<P2RN_SV>-DCT_PERNR = 1.
<P2RN_SV>-DCT_SEQNR = 1.
<P2RN_SV>-DCT_ROWID = 1.
<P2RN_SV>-CNTR1 = 1.

ENDLOOP.

LOOP AT IT_P2RN_SV INTO WA_P2RN_SV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RN_SV-BEGDA, sy-vline,
  WA_P2RN_SV-ENDDA, sy-vline,
  WA_P2RN_SV-KDZW1, sy-vline,
  WA_P2RN_SV-KDWW1, sy-vline,
  WA_P2RN_SV-KDWAO, sy-vline,
  WA_P2RN_SV-KDZKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RN_SV 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_SV 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_SV INTO WA_P2RN_SV.


*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_SV_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
CNTR1 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
KDZW1 TYPE STRING,
KDWW1 TYPE STRING,
KDWAO TYPE STRING,
KDZKS TYPE STRING,
NVERZ TYPE STRING,
BDRPR TYPE STRING,
INHPR TYPE STRING,
BDRWG TYPE STRING,
INHBS TYPE STRING,
DATSF TYPE STRING,
BMETH TYPE STRING,
EXSV1 TYPE STRING,
EXSV2 TYPE STRING,
EXSV3 TYPE STRING,
EXSV4 TYPE STRING,
EXSV5 TYPE STRING,
SVGRP TYPE STRING,
SVDAY TYPE STRING,
SVMET TYPE STRING,
ZKVGP TYPE STRING,
ZKVES TYPE STRING,
PKLAS TYPE STRING,
ZKVNR TYPE STRING,
MBVCD TYPE STRING,
RPUVI TYPE STRING,
UPKOW TYPE STRING,
ARBGK TYPE STRING,
DATAG TYPE STRING,
JGKRT TYPE STRING,
SECTR TYPE STRING,
RISGR TYPE STRING,
NOMPR TYPE STRING,
WGBNP TYPE STRING,
INCVZ TYPE STRING,
IDCVZ TYPE STRING,
FACVZ TYPE STRING,
SIRHE TYPE STRING,
SIBEG TYPE STRING,
SIEND TYPE STRING,
EXREE TYPE STRING,
SIEMA TYPE STRING,
REPOR TYPE STRING,
SIREE TYPE STRING,
EXSJR TYPE STRING,
KDUFO TYPE STRING,
LCBCD TYPE STRING,
LCBBD TYPE STRING,
EXSV6 TYPE STRING,
EXSV7 TYPE STRING,
AWFLW TYPE STRING,
REHWR TYPE STRING,
CTTYP TYPE STRING,
CTEDT TYPE STRING,
CTWRT TYPE STRING,
CTSBY TYPE STRING,
CTRRS TYPE STRING,
CTANH TYPE STRING,
AWFLR TYPE STRING,
PNTCT TYPE STRING,
CTPPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RN_SV_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_SV_STR-MANDT sy-vline 
WA_P2RN_SV_STR-DCT_PERNR sy-vline 
WA_P2RN_SV_STR-DCT_SEQNR sy-vline 
WA_P2RN_SV_STR-DCT_ROWID sy-vline 
WA_P2RN_SV_STR-CNTR1 sy-vline 
WA_P2RN_SV_STR-BEGDA sy-vline 
WA_P2RN_SV_STR-ENDDA sy-vline 
WA_P2RN_SV_STR-KDZW1 sy-vline 
WA_P2RN_SV_STR-KDWW1 sy-vline 
WA_P2RN_SV_STR-KDWAO sy-vline 
WA_P2RN_SV_STR-KDZKS sy-vline 
WA_P2RN_SV_STR-NVERZ sy-vline 
WA_P2RN_SV_STR-BDRPR sy-vline 
WA_P2RN_SV_STR-INHPR sy-vline 
WA_P2RN_SV_STR-BDRWG sy-vline 
WA_P2RN_SV_STR-INHBS sy-vline 
WA_P2RN_SV_STR-DATSF sy-vline 
WA_P2RN_SV_STR-BMETH sy-vline 
WA_P2RN_SV_STR-EXSV1 sy-vline 
WA_P2RN_SV_STR-EXSV2 sy-vline 
WA_P2RN_SV_STR-EXSV3 sy-vline 
WA_P2RN_SV_STR-EXSV4 sy-vline 
WA_P2RN_SV_STR-EXSV5 sy-vline 
WA_P2RN_SV_STR-SVGRP sy-vline 
WA_P2RN_SV_STR-SVDAY sy-vline 
WA_P2RN_SV_STR-SVMET sy-vline 
WA_P2RN_SV_STR-ZKVGP sy-vline 
WA_P2RN_SV_STR-ZKVES sy-vline 
WA_P2RN_SV_STR-PKLAS sy-vline 
WA_P2RN_SV_STR-ZKVNR sy-vline 
WA_P2RN_SV_STR-MBVCD sy-vline 
WA_P2RN_SV_STR-RPUVI sy-vline 
WA_P2RN_SV_STR-UPKOW sy-vline 
WA_P2RN_SV_STR-ARBGK sy-vline 
WA_P2RN_SV_STR-DATAG sy-vline 
WA_P2RN_SV_STR-JGKRT sy-vline 
WA_P2RN_SV_STR-SECTR sy-vline 
WA_P2RN_SV_STR-RISGR sy-vline 
WA_P2RN_SV_STR-NOMPR sy-vline 
WA_P2RN_SV_STR-WGBNP sy-vline 
WA_P2RN_SV_STR-INCVZ sy-vline 
WA_P2RN_SV_STR-IDCVZ sy-vline 
WA_P2RN_SV_STR-FACVZ sy-vline 
WA_P2RN_SV_STR-SIRHE sy-vline 
WA_P2RN_SV_STR-SIBEG sy-vline 
WA_P2RN_SV_STR-SIEND sy-vline 
WA_P2RN_SV_STR-EXREE sy-vline 
WA_P2RN_SV_STR-SIEMA sy-vline 
WA_P2RN_SV_STR-REPOR sy-vline 
WA_P2RN_SV_STR-SIREE sy-vline 
WA_P2RN_SV_STR-EXSJR sy-vline 
WA_P2RN_SV_STR-KDUFO sy-vline 
WA_P2RN_SV_STR-LCBCD sy-vline 
WA_P2RN_SV_STR-LCBBD sy-vline 
WA_P2RN_SV_STR-EXSV6 sy-vline 
WA_P2RN_SV_STR-EXSV7 sy-vline 
WA_P2RN_SV_STR-AWFLW sy-vline 
WA_P2RN_SV_STR-REHWR sy-vline 
WA_P2RN_SV_STR-CTTYP sy-vline 
WA_P2RN_SV_STR-CTEDT sy-vline 
WA_P2RN_SV_STR-CTWRT sy-vline 
WA_P2RN_SV_STR-CTSBY sy-vline 
WA_P2RN_SV_STR-CTRRS sy-vline 
WA_P2RN_SV_STR-CTANH sy-vline 
WA_P2RN_SV_STR-AWFLR sy-vline 
WA_P2RN_SV_STR-PNTCT sy-vline 
WA_P2RN_SV_STR-CTPPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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