ABAP Select data from SAP table P2RB_ST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RB_ST 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 P2RB_ST. 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 P2RB_ST 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_P2RB_ST TYPE STANDARD TABLE OF P2RB_ST,
      WA_P2RB_ST TYPE P2RB_ST,
      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: <P2RB_ST> TYPE P2RB_ST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RB_ST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RB_ST
  INTO TABLE IT_P2RB_ST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RB_ST
*  INTO TABLE @DATA(IT_P2RB_ST2).
*--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_P2RB_ST INDEX 1 INTO DATA(WA_P2RB_ST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RB_ST ASSIGNING <P2RB_ST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RB_ST>-MANDT = 1.
<P2RB_ST>-DCT_PERNR = 1.
<P2RB_ST>-DCT_SEQNR = 1.
<P2RB_ST>-DCT_ROWID = 1.
<P2RB_ST>-CNTR2 = 1.

ENDLOOP.

LOOP AT IT_P2RB_ST INTO WA_P2RB_ST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RB_ST-BEGDA, sy-vline,
  WA_P2RB_ST-ENDDA, sy-vline,
  WA_P2RB_ST-AKSTA, sy-vline,
  WA_P2RB_ST-ANSTA, sy-vline,
  WA_P2RB_ST-JUPER, sy-vline,
  WA_P2RB_ST-BUKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RB_ST 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_P2RB_ST 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_P2RB_ST INTO WA_P2RB_ST.


*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_P2RB_ST_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
CNTR2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
AKSTA TYPE STRING,
ANSTA TYPE STRING,
JUPER TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
CTTYP TYPE STRING,
ARBER TYPE STRING,
BREGM TYPE STRING,
BVKKA TYPE STRING,
BVAKA TYPE STRING,
BVECH TYPE STRING,
BVVAK TYPE STRING,
BVMUT TYPE STRING,
BVAMU TYPE STRING,
BVKTL TYPE STRING,
BVMKT TYPE STRING,
BVETL TYPE STRING,
BVEKI TYPE STRING,
BVEMV TYPE STRING,
BVWMV TYPE STRING,
BVWWE TYPE STRING,
BVATL TYPE STRING,
BVAMT TYPE STRING,
BVFAM TYPE STRING,
BVTAX TYPE STRING,
BVFSV TYPE STRING,
WAERS TYPE STRING,
BVPCT TYPE STRING,
BVBOR TYPE STRING,
BVFOR TYPE STRING,
BVRES TYPE STRING,
BV281 TYPE STRING,
BVBAR TYPE STRING,
BVCOA TYPE STRING,
SHFTW TYPE STRING,
NR65S TYPE STRING,
N65SD TYPE STRING,
BVEXC TYPE STRING,
TAXDE TYPE STRING,
DISND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RB_ST_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_P2RB_ST_STR-MANDT sy-vline 
WA_P2RB_ST_STR-DCT_PERNR sy-vline 
WA_P2RB_ST_STR-DCT_SEQNR sy-vline 
WA_P2RB_ST_STR-DCT_ROWID sy-vline 
WA_P2RB_ST_STR-CNTR2 sy-vline 
WA_P2RB_ST_STR-BEGDA sy-vline 
WA_P2RB_ST_STR-ENDDA sy-vline 
WA_P2RB_ST_STR-AKSTA sy-vline 
WA_P2RB_ST_STR-ANSTA sy-vline 
WA_P2RB_ST_STR-JUPER sy-vline 
WA_P2RB_ST_STR-BUKRS sy-vline 
WA_P2RB_ST_STR-WERKS sy-vline 
WA_P2RB_ST_STR-BTRTL sy-vline 
WA_P2RB_ST_STR-PERSG sy-vline 
WA_P2RB_ST_STR-PERSK sy-vline 
WA_P2RB_ST_STR-CTTYP sy-vline 
WA_P2RB_ST_STR-ARBER sy-vline 
WA_P2RB_ST_STR-BREGM sy-vline 
WA_P2RB_ST_STR-BVKKA sy-vline 
WA_P2RB_ST_STR-BVAKA sy-vline 
WA_P2RB_ST_STR-BVECH sy-vline 
WA_P2RB_ST_STR-BVVAK sy-vline 
WA_P2RB_ST_STR-BVMUT sy-vline 
WA_P2RB_ST_STR-BVAMU sy-vline 
WA_P2RB_ST_STR-BVKTL sy-vline 
WA_P2RB_ST_STR-BVMKT sy-vline 
WA_P2RB_ST_STR-BVETL sy-vline 
WA_P2RB_ST_STR-BVEKI sy-vline 
WA_P2RB_ST_STR-BVEMV sy-vline 
WA_P2RB_ST_STR-BVWMV sy-vline 
WA_P2RB_ST_STR-BVWWE sy-vline 
WA_P2RB_ST_STR-BVATL sy-vline 
WA_P2RB_ST_STR-BVAMT sy-vline 
WA_P2RB_ST_STR-BVFAM sy-vline 
WA_P2RB_ST_STR-BVTAX sy-vline 
WA_P2RB_ST_STR-BVFSV sy-vline 
WA_P2RB_ST_STR-WAERS sy-vline 
WA_P2RB_ST_STR-BVPCT sy-vline 
WA_P2RB_ST_STR-BVBOR sy-vline 
WA_P2RB_ST_STR-BVFOR sy-vline 
WA_P2RB_ST_STR-BVRES sy-vline 
WA_P2RB_ST_STR-BV281 sy-vline 
WA_P2RB_ST_STR-BVBAR sy-vline 
WA_P2RB_ST_STR-BVCOA sy-vline 
WA_P2RB_ST_STR-SHFTW sy-vline 
WA_P2RB_ST_STR-NR65S sy-vline 
WA_P2RB_ST_STR-N65SD sy-vline 
WA_P2RB_ST_STR-BVEXC sy-vline 
WA_P2RB_ST_STR-TAXDE sy-vline 
WA_P2RB_ST_STR-DISND sy-vline      INTO ld_text SEPARATED BY SPACE.

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