ABAP Select data from SAP table P2RE_SV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RE_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 P2RE_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 P2RE_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_P2RE_SV TYPE STANDARD TABLE OF P2RE_SV,
      WA_P2RE_SV TYPE P2RE_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: <P2RE_SV> TYPE P2RE_SV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RE_SV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RE_SV
  INTO TABLE IT_P2RE_SV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RE_SV
*  INTO TABLE @DATA(IT_P2RE_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_P2RE_SV INDEX 1 INTO DATA(WA_P2RE_SV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RE_SV ASSIGNING <P2RE_SV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RE_SV>-MANDT = 1.
<P2RE_SV>-DCT_PERNR = 1.
<P2RE_SV>-DCT_SEQNR = 1.
<P2RE_SV>-DCT_ROWID = 1.
<P2RE_SV>-CNTR1 = 1.

ENDLOOP.

LOOP AT IT_P2RE_SV INTO WA_P2RE_SV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RE_SV-BEGDA, sy-vline,
  WA_P2RE_SV-ENDDA, sy-vline,
  WA_P2RE_SV-NATSS, sy-vline,
  WA_P2RE_SV-EPIGR, sy-vline,
  WA_P2RE_SV-GRCOT, sy-vline,
  WA_P2RE_SV-BERKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RE_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_P2RE_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_P2RE_SV INTO WA_P2RE_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_P2RE_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,
NATSS TYPE STRING,
EPIGR TYPE STRING,
GRCOT TYPE STRING,
BERKT TYPE STRING,
TICON TYPE STRING,
DICON TYPE STRING,
HOCON TYPE STRING,
NRHIJ TYPE STRING,
NRHMI TYPE STRING,
PEPFI TYPE STRING,
PETPC TYPE STRING,
PENSS TYPE STRING,
PESOC TYPE STRING,
SOILT TYPE STRING,
SOASV TYPE STRING,
EPIG2 TYPE STRING,
INDRE TYPE STRING,
FERED TYPE STRING,
INDFN TYPE STRING,
NOMAT TYPE STRING,
PLNSS TYPE STRING,
PPCG2 TYPE STRING,
PPAT1 TYPE STRING,
PPAT2 TYPE STRING,
PCILT TYPE STRING,
PCMAT TYPE STRING,
EXESS TYPE STRING,
NISSE TYPE STRING,
MUTAD TYPE STRING,
MADFE TYPE STRING,
OCUPA TYPE STRING,
PTPAR TYPE STRING,
RELAB TYPE STRING,
FEINI TYPE STRING,
METO3 TYPE STRING,
FERE3 TYPE STRING,
METO4 TYPE STRING,
FERE4 TYPE STRING,
EMPL_RELATION TYPE STRING,
PLPOR TYPE STRING,
PLPDE TYPE STRING,
TRAINING_PERCENT_ME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RE_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_P2RE_SV_STR-MANDT sy-vline 
WA_P2RE_SV_STR-DCT_PERNR sy-vline 
WA_P2RE_SV_STR-DCT_SEQNR sy-vline 
WA_P2RE_SV_STR-DCT_ROWID sy-vline 
WA_P2RE_SV_STR-CNTR1 sy-vline 
WA_P2RE_SV_STR-BEGDA sy-vline 
WA_P2RE_SV_STR-ENDDA sy-vline 
WA_P2RE_SV_STR-NATSS sy-vline 
WA_P2RE_SV_STR-EPIGR sy-vline 
WA_P2RE_SV_STR-GRCOT sy-vline 
WA_P2RE_SV_STR-BERKT sy-vline 
WA_P2RE_SV_STR-TICON sy-vline 
WA_P2RE_SV_STR-DICON sy-vline 
WA_P2RE_SV_STR-HOCON sy-vline 
WA_P2RE_SV_STR-NRHIJ sy-vline 
WA_P2RE_SV_STR-NRHMI sy-vline 
WA_P2RE_SV_STR-PEPFI sy-vline 
WA_P2RE_SV_STR-PETPC sy-vline 
WA_P2RE_SV_STR-PENSS sy-vline 
WA_P2RE_SV_STR-PESOC sy-vline 
WA_P2RE_SV_STR-SOILT sy-vline 
WA_P2RE_SV_STR-SOASV sy-vline 
WA_P2RE_SV_STR-EPIG2 sy-vline 
WA_P2RE_SV_STR-INDRE sy-vline 
WA_P2RE_SV_STR-FERED sy-vline 
WA_P2RE_SV_STR-INDFN sy-vline 
WA_P2RE_SV_STR-NOMAT sy-vline 
WA_P2RE_SV_STR-PLNSS sy-vline 
WA_P2RE_SV_STR-PPCG2 sy-vline 
WA_P2RE_SV_STR-PPAT1 sy-vline 
WA_P2RE_SV_STR-PPAT2 sy-vline 
WA_P2RE_SV_STR-PCILT sy-vline 
WA_P2RE_SV_STR-PCMAT sy-vline 
WA_P2RE_SV_STR-EXESS sy-vline 
WA_P2RE_SV_STR-NISSE sy-vline 
WA_P2RE_SV_STR-MUTAD sy-vline 
WA_P2RE_SV_STR-MADFE sy-vline 
WA_P2RE_SV_STR-OCUPA sy-vline 
WA_P2RE_SV_STR-PTPAR sy-vline 
WA_P2RE_SV_STR-RELAB sy-vline 
WA_P2RE_SV_STR-FEINI sy-vline 
WA_P2RE_SV_STR-METO3 sy-vline 
WA_P2RE_SV_STR-FERE3 sy-vline 
WA_P2RE_SV_STR-METO4 sy-vline 
WA_P2RE_SV_STR-FERE4 sy-vline 
WA_P2RE_SV_STR-EMPL_RELATION sy-vline 
WA_P2RE_SV_STR-PLPOR sy-vline 
WA_P2RE_SV_STR-PLPDE sy-vline 
WA_P2RE_SV_STR-TRAINING_PERCENT_ME sy-vline      INTO ld_text SEPARATED BY SPACE.

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