ABAP Select data from SAP table P2UN_DSBP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2UN_DSBP 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 P2UN_DSBP. 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 P2UN_DSBP 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_P2UN_DSBP TYPE STANDARD TABLE OF P2UN_DSBP,
      WA_P2UN_DSBP TYPE P2UN_DSBP,
      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: <P2UN_DSBP> TYPE P2UN_DSBP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2UN_DSBP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2UN_DSBP
  INTO TABLE IT_P2UN_DSBP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2UN_DSBP
*  INTO TABLE @DATA(IT_P2UN_DSBP2).
*--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_P2UN_DSBP INDEX 1 INTO DATA(WA_P2UN_DSBP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2UN_DSBP ASSIGNING <P2UN_DSBP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2UN_DSBP>-MANDT = 1.
<P2UN_DSBP>-DCT_PERNR = 1.
<P2UN_DSBP>-DCT_SEQNR = 1.
<P2UN_DSBP>-DCT_ROWID = 1.
<P2UN_DSBP>-APZNR = 1.

ENDLOOP.

LOOP AT IT_P2UN_DSBP INTO WA_P2UN_DSBP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2UN_DSBP-BEGDA, sy-vline,
  WA_P2UN_DSBP-ENDDA, sy-vline,
  WA_P2UN_DSBP-WERKS, sy-vline,
  WA_P2UN_DSBP-BTRTL, sy-vline,
  WA_P2UN_DSBP-DSTAT, sy-vline,
  WA_P2UN_DSBP-DSCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2UN_DSBP 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_P2UN_DSBP 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_P2UN_DSBP INTO WA_P2UN_DSBP.


*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_P2UN_DSBP_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
APZNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
DSTAT TYPE STRING,
DSCAT TYPE STRING,
EWERK TYPE STRING,
EBTRT TYPE STRING,
EDSTA TYPE STRING,
EDSCA TYPE STRING,
DPIND TYPE STRING,
CLMM TYPE STRING,
VGLTA TYPE STRING,
VGLGB TYPE STRING,
VGLGR TYPE STRING,
VGLST TYPE STRING,
SPATG TYPE STRING,
ASOLL TYPE STRING,
EGDDS TYPE STRING,
EGASH TYPE STRING,
DSSCL TYPE STRING,
DSNFI TYPE STRING,
DSAFI TYPE STRING,
DSESI TYPE STRING,
DSAPA TYPE STRING,
CTTYP TYPE STRING,
CTEDT TYPE STRING,
CTBEG TYPE STRING,
CTNUM TYPE STRING,
CTPYO TYPE STRING,
CTSTAT TYPE STRING,
RECIND TYPE STRING,
CTTERM TYPE STRING,
CSRVT TYPE STRING,
CSAHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2UN_DSBP_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_P2UN_DSBP_STR-MANDT sy-vline 
WA_P2UN_DSBP_STR-DCT_PERNR sy-vline 
WA_P2UN_DSBP_STR-DCT_SEQNR sy-vline 
WA_P2UN_DSBP_STR-DCT_ROWID sy-vline 
WA_P2UN_DSBP_STR-APZNR sy-vline 
WA_P2UN_DSBP_STR-BEGDA sy-vline 
WA_P2UN_DSBP_STR-ENDDA sy-vline 
WA_P2UN_DSBP_STR-WERKS sy-vline 
WA_P2UN_DSBP_STR-BTRTL sy-vline 
WA_P2UN_DSBP_STR-DSTAT sy-vline 
WA_P2UN_DSBP_STR-DSCAT sy-vline 
WA_P2UN_DSBP_STR-EWERK sy-vline 
WA_P2UN_DSBP_STR-EBTRT sy-vline 
WA_P2UN_DSBP_STR-EDSTA sy-vline 
WA_P2UN_DSBP_STR-EDSCA sy-vline 
WA_P2UN_DSBP_STR-DPIND sy-vline 
WA_P2UN_DSBP_STR-CLMM sy-vline 
WA_P2UN_DSBP_STR-VGLTA sy-vline 
WA_P2UN_DSBP_STR-VGLGB sy-vline 
WA_P2UN_DSBP_STR-VGLGR sy-vline 
WA_P2UN_DSBP_STR-VGLST sy-vline 
WA_P2UN_DSBP_STR-SPATG sy-vline 
WA_P2UN_DSBP_STR-ASOLL sy-vline 
WA_P2UN_DSBP_STR-EGDDS sy-vline 
WA_P2UN_DSBP_STR-EGASH sy-vline 
WA_P2UN_DSBP_STR-DSSCL sy-vline 
WA_P2UN_DSBP_STR-DSNFI sy-vline 
WA_P2UN_DSBP_STR-DSAFI sy-vline 
WA_P2UN_DSBP_STR-DSESI sy-vline 
WA_P2UN_DSBP_STR-DSAPA sy-vline 
WA_P2UN_DSBP_STR-CTTYP sy-vline 
WA_P2UN_DSBP_STR-CTEDT sy-vline 
WA_P2UN_DSBP_STR-CTBEG sy-vline 
WA_P2UN_DSBP_STR-CTNUM sy-vline 
WA_P2UN_DSBP_STR-CTPYO sy-vline 
WA_P2UN_DSBP_STR-CTSTAT sy-vline 
WA_P2UN_DSBP_STR-RECIND sy-vline 
WA_P2UN_DSBP_STR-CTTERM sy-vline 
WA_P2UN_DSBP_STR-CSRVT sy-vline 
WA_P2UN_DSBP_STR-CSAHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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