ABAP Select data from SAP table LDPRFV_VV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LDPRFV_VV
*  INTO TABLE @DATA(IT_LDPRFV_VV2).
*--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_LDPRFV_VV INDEX 1 INTO DATA(WA_LDPRFV_VV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LDPRFV_VV>-MANDT = 1.
<LDPRFV_VV>-APPLC = 1.
<LDPRFV_VV>-LOCAT = 1.
<LDPRFV_VV>-DPROF = 1.
<LDPRFV_VV>-SIZLN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LDPRFV_VV-MSGLN, sy-vline,
  WA_LDPRFV_VV-NUMMN, sy-vline,
  WA_LDPRFV_VV-SIZPB, sy-vline,
  WA_LDPRFV_VV-NUMPB, sy-vline,
  WA_LDPRFV_VV-TEMPL, sy-vline,
  WA_LDPRFV_VV-SLIST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LDPRFV_VV 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_LDPRFV_VV 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_LDPRFV_VV INTO WA_LDPRFV_VV.


*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_LDPRFV_VV_STR, 
MANDT TYPE STRING,
APPLC TYPE STRING,
LOCAT TYPE STRING,
DPROF TYPE STRING,
SIZLN TYPE STRING,
MSGLN TYPE STRING,
NUMMN TYPE STRING,
SIZPB TYPE STRING,
NUMPB TYPE STRING,
TEMPL TYPE STRING,
SLIST TYPE STRING,
TEXT TYPE STRING,
STEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LDPRFV_VV_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_LDPRFV_VV_STR-MANDT sy-vline 
WA_LDPRFV_VV_STR-APPLC sy-vline 
WA_LDPRFV_VV_STR-LOCAT sy-vline 
WA_LDPRFV_VV_STR-DPROF sy-vline 
WA_LDPRFV_VV_STR-SIZLN sy-vline 
WA_LDPRFV_VV_STR-MSGLN sy-vline 
WA_LDPRFV_VV_STR-NUMMN sy-vline 
WA_LDPRFV_VV_STR-SIZPB sy-vline 
WA_LDPRFV_VV_STR-NUMPB sy-vline 
WA_LDPRFV_VV_STR-TEMPL sy-vline 
WA_LDPRFV_VV_STR-SLIST sy-vline 
WA_LDPRFV_VV_STR-TEXT sy-vline 
WA_LDPRFV_VV_STR-STEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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