ABAP Select data from SAP table P2RR_RM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RR_RM 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 P2RR_RM. 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 P2RR_RM 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_P2RR_RM TYPE STANDARD TABLE OF P2RR_RM,
      WA_P2RR_RM TYPE P2RR_RM,
      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: <P2RR_RM> TYPE P2RR_RM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RR_RM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RR_RM
  INTO TABLE IT_P2RR_RM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RR_RM
*  INTO TABLE @DATA(IT_P2RR_RM2).
*--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_P2RR_RM INDEX 1 INTO DATA(WA_P2RR_RM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RR_RM ASSIGNING <P2RR_RM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RR_RM>-MANDT = 1.
<P2RR_RM>-DCT_PERNR = 1.
<P2RR_RM>-DCT_SEQNR = 1.
<P2RR_RM>-DCT_ROWID = 1.
<P2RR_RM>-INFTY = 1.

ENDLOOP.

LOOP AT IT_P2RR_RM INTO WA_P2RR_RM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RR_RM-SUBTY, sy-vline,
  WA_P2RR_RM-OBJPS, sy-vline,
  WA_P2RR_RM-SPRPS, sy-vline,
  WA_P2RR_RM-ENDDA, sy-vline,
  WA_P2RR_RM-BEGDA, sy-vline,
  WA_P2RR_RM-SEQNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RR_RM 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_P2RR_RM 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_P2RR_RM INTO WA_P2RR_RM.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P2RR_RM-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RR_RM-PABRJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCSY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2RR_RM-DOCSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RR_RM-DOCSY.
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_P2RR_RM_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
GRPVL TYPE STRING,
LGART TYPE STRING,
ADSUM TYPE STRING,
OPKEN TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
ANZHL TYPE STRING,
ZEINH TYPE STRING,
INDBW TYPE STRING,
ZUORD TYPE STRING,
ESTDT TYPE STRING,
PABRJ TYPE STRING,
PABRP TYPE STRING,
UWDAT TYPE STRING,
ZDATE TYPE STRING,
ZFPER TYPE STRING,
ZANZL TYPE STRING,
ZEINZ TYPE STRING,
MODEL TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
VTKEN TYPE STRING,
STDAZ TYPE STRING,
BWGRL TYPE STRING,
AUFKZ TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
VERSL TYPE STRING,
WTART TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
OCRSN TYPE STRING,
QCTYP TYPE STRING,
STYPE TYPE STRING,
QTYPE TYPE STRING,
SRULE TYPE STRING,
NUMBR TYPE STRING,
AMONT TYPE STRING,
WGTYP TYPE STRING,
QUONR TYPE STRING,
DOCSY TYPE STRING,
DOCNR TYPE STRING,
NOPAY TYPE STRING,
DATUM TYPE STRING,
ALZNR TYPE STRING,
C1ZNR TYPE STRING,
ABZNR TYPE STRING,
IFTYP TYPE STRING,
PRZNR TYPE STRING,
START_BEF_ZERO TYPE STRING,
APZNR TYPE STRING,
CNTR1 TYPE STRING,
CNTR2 TYPE STRING,
CNTR3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RR_RM_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_P2RR_RM_STR-MANDT sy-vline 
WA_P2RR_RM_STR-DCT_PERNR sy-vline 
WA_P2RR_RM_STR-DCT_SEQNR sy-vline 
WA_P2RR_RM_STR-DCT_ROWID sy-vline 
WA_P2RR_RM_STR-INFTY sy-vline 
WA_P2RR_RM_STR-SUBTY sy-vline 
WA_P2RR_RM_STR-OBJPS sy-vline 
WA_P2RR_RM_STR-SPRPS sy-vline 
WA_P2RR_RM_STR-ENDDA sy-vline 
WA_P2RR_RM_STR-BEGDA sy-vline 
WA_P2RR_RM_STR-SEQNR sy-vline 
WA_P2RR_RM_STR-REFEX sy-vline 
WA_P2RR_RM_STR-ORDEX sy-vline 
WA_P2RR_RM_STR-ITBLD sy-vline 
WA_P2RR_RM_STR-PREAS sy-vline 
WA_P2RR_RM_STR-GRPVL sy-vline 
WA_P2RR_RM_STR-LGART sy-vline 
WA_P2RR_RM_STR-ADSUM sy-vline 
WA_P2RR_RM_STR-OPKEN sy-vline 
WA_P2RR_RM_STR-BETRG sy-vline 
WA_P2RR_RM_STR-WAERS sy-vline 
WA_P2RR_RM_STR-ANZHL sy-vline 
WA_P2RR_RM_STR-ZEINH sy-vline 
WA_P2RR_RM_STR-INDBW sy-vline 
WA_P2RR_RM_STR-ZUORD sy-vline 
WA_P2RR_RM_STR-ESTDT sy-vline 
WA_P2RR_RM_STR-PABRJ sy-vline 
WA_P2RR_RM_STR-PABRP sy-vline 
WA_P2RR_RM_STR-UWDAT sy-vline 
WA_P2RR_RM_STR-ZDATE sy-vline 
WA_P2RR_RM_STR-ZFPER sy-vline 
WA_P2RR_RM_STR-ZANZL sy-vline 
WA_P2RR_RM_STR-ZEINZ sy-vline 
WA_P2RR_RM_STR-MODEL sy-vline 
WA_P2RR_RM_STR-BEGUZ sy-vline 
WA_P2RR_RM_STR-ENDUZ sy-vline 
WA_P2RR_RM_STR-VTKEN sy-vline 
WA_P2RR_RM_STR-STDAZ sy-vline 
WA_P2RR_RM_STR-BWGRL sy-vline 
WA_P2RR_RM_STR-AUFKZ sy-vline 
WA_P2RR_RM_STR-TRFGR sy-vline 
WA_P2RR_RM_STR-TRFST sy-vline 
WA_P2RR_RM_STR-PRAKN sy-vline 
WA_P2RR_RM_STR-PRAKZ sy-vline 
WA_P2RR_RM_STR-OTYPE sy-vline 
WA_P2RR_RM_STR-PLANS sy-vline 
WA_P2RR_RM_STR-VERSL sy-vline 
WA_P2RR_RM_STR-WTART sy-vline 
WA_P2RR_RM_STR-PAYTY sy-vline 
WA_P2RR_RM_STR-PAYID sy-vline 
WA_P2RR_RM_STR-OCRSN sy-vline 
WA_P2RR_RM_STR-QCTYP sy-vline 
WA_P2RR_RM_STR-STYPE sy-vline 
WA_P2RR_RM_STR-QTYPE sy-vline 
WA_P2RR_RM_STR-SRULE sy-vline 
WA_P2RR_RM_STR-NUMBR sy-vline 
WA_P2RR_RM_STR-AMONT sy-vline 
WA_P2RR_RM_STR-WGTYP sy-vline 
WA_P2RR_RM_STR-QUONR sy-vline 
WA_P2RR_RM_STR-DOCSY sy-vline 
WA_P2RR_RM_STR-DOCNR sy-vline 
WA_P2RR_RM_STR-NOPAY sy-vline 
WA_P2RR_RM_STR-DATUM sy-vline 
WA_P2RR_RM_STR-ALZNR sy-vline 
WA_P2RR_RM_STR-C1ZNR sy-vline 
WA_P2RR_RM_STR-ABZNR sy-vline 
WA_P2RR_RM_STR-IFTYP sy-vline 
WA_P2RR_RM_STR-PRZNR sy-vline 
WA_P2RR_RM_STR-START_BEF_ZERO sy-vline 
WA_P2RR_RM_STR-APZNR sy-vline 
WA_P2RR_RM_STR-CNTR1 sy-vline 
WA_P2RR_RM_STR-CNTR2 sy-vline 
WA_P2RR_RM_STR-CNTR3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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