ABAP Select data from SAP table P01UV_DSSD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01UV_DSSD 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 P01UV_DSSD. 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 P01UV_DSSD 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_P01UV_DSSD TYPE STANDARD TABLE OF P01UV_DSSD,
      WA_P01UV_DSSD TYPE P01UV_DSSD,
      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: <P01UV_DSSD> TYPE P01UV_DSSD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01UV_DSSD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01UV_DSSD
  INTO TABLE IT_P01UV_DSSD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01UV_DSSD
*  INTO TABLE @DATA(IT_P01UV_DSSD2).
*--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_P01UV_DSSD INDEX 1 INTO DATA(WA_P01UV_DSSD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01UV_DSSD ASSIGNING <P01UV_DSSD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01UV_DSSD>-MANDT = 1.
<P01UV_DSSD>-GUID = 1.
<P01UV_DSSD>-VF = 1.
<P01UV_DSSD>-BBNRAB = 1.
<P01UV_DSSD>-BBNREP = 1.

ENDLOOP.

LOOP AT IT_P01UV_DSSD INTO WA_P01UV_DSSD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01UV_DSSD-VERNR, sy-vline,
  WA_P01UV_DSSD-ED, sy-vline,
  WA_P01UV_DSSD-DSID, sy-vline,
  WA_P01UV_DSSD-VORGID, sy-vline,
  WA_P01UV_DSSD-BBNRLB, sy-vline,
  WA_P01UV_DSSD-BBNRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01UV_DSSD 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_P01UV_DSSD 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_P01UV_DSSD INTO WA_P01UV_DSSD.


*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_P01UV_DSSD_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
VF TYPE STRING,
BBNRAB TYPE STRING,
BBNREP TYPE STRING,
VERNR TYPE STRING,
ED TYPE STRING,
DSID TYPE STRING,
VORGID TYPE STRING,
BBNRLB TYPE STRING,
BBNRAS TYPE STRING,
LFDNR TYPE STRING,
BBNRUV TYPE STRING,
MITNR TYPE STRING,
MGVON TYPE STRING,
MGBIS TYPE STRING,
JAHR TYPE STRING,
BEITRAG TYPE STRING,
ANZGTST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01UV_DSSD_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_P01UV_DSSD_STR-MANDT sy-vline 
WA_P01UV_DSSD_STR-GUID sy-vline 
WA_P01UV_DSSD_STR-VF sy-vline 
WA_P01UV_DSSD_STR-BBNRAB sy-vline 
WA_P01UV_DSSD_STR-BBNREP sy-vline 
WA_P01UV_DSSD_STR-VERNR sy-vline 
WA_P01UV_DSSD_STR-ED sy-vline 
WA_P01UV_DSSD_STR-DSID sy-vline 
WA_P01UV_DSSD_STR-VORGID sy-vline 
WA_P01UV_DSSD_STR-BBNRLB sy-vline 
WA_P01UV_DSSD_STR-BBNRAS sy-vline 
WA_P01UV_DSSD_STR-LFDNR sy-vline 
WA_P01UV_DSSD_STR-BBNRUV sy-vline 
WA_P01UV_DSSD_STR-MITNR sy-vline 
WA_P01UV_DSSD_STR-MGVON sy-vline 
WA_P01UV_DSSD_STR-MGBIS sy-vline 
WA_P01UV_DSSD_STR-JAHR sy-vline 
WA_P01UV_DSSD_STR-BEITRAG sy-vline 
WA_P01UV_DSSD_STR-ANZGTST sy-vline      INTO ld_text SEPARATED BY SPACE.

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