ABAP Select data from SAP table VWRPLTAFV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VWRPLTAFV
*  INTO TABLE @DATA(IT_VWRPLTAFV2).
*--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_VWRPLTAFV INDEX 1 INTO DATA(WA_VWRPLTAFV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VWRPLTAFV>-MANDT = 1.
<VWRPLTAFV>-FELDNAME = 1.
<VWRPLTAFV>-AFNAME = 1.
<VWRPLTAFV>-LISTART = 1.
<VWRPLTAFV>-LISTAPPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VWRPLTAFV-COL_POS, sy-vline,
  WA_VWRPLTAFV-FIELDNAME, sy-vline,
  WA_VWRPLTAFV-TABNAME, sy-vline,
  WA_VWRPLTAFV-REF_FIELDN, sy-vline,
  WA_VWRPLTAFV-REF_TABNAM, sy-vline,
  WA_VWRPLTAFV-CFIELDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VWRPLTAFV 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_VWRPLTAFV 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_VWRPLTAFV INTO WA_VWRPLTAFV.


*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_VWRPLTAFV_STR, 
MANDT TYPE STRING,
FELDNAME TYPE STRING,
AFNAME TYPE STRING,
LISTART TYPE STRING,
LISTAPPL TYPE STRING,
COL_POS TYPE STRING,
FIELDNAME TYPE STRING,
TABNAME TYPE STRING,
REF_FIELDN TYPE STRING,
REF_TABNAM TYPE STRING,
CFIELDNAME TYPE STRING,
CTABNAME TYPE STRING,
QFIELDNAME TYPE STRING,
QTABNAME TYPE STRING,
ROW_POS TYPE STRING,
KEY_ TYPE STRING,
KEY_SEL TYPE STRING,
ICON TYPE STRING,
SYMBOL TYPE STRING,
JUST TYPE STRING,
LZERO TYPE STRING,
NO_SIGN TYPE STRING,
NO_ZERO TYPE STRING,
NO_SUM TYPE STRING,
DO_SUM TYPE STRING,
NO_OUT TYPE STRING,
SP_GROUP TYPE STRING,
OFFSET_ TYPE STRING,
REPREP TYPE STRING,
TECH TYPE STRING,
REPTEXT TYPE STRING,
SELTEXT TYPE STRING,
DDICTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VWRPLTAFV_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_VWRPLTAFV_STR-MANDT sy-vline 
WA_VWRPLTAFV_STR-FELDNAME sy-vline 
WA_VWRPLTAFV_STR-AFNAME sy-vline 
WA_VWRPLTAFV_STR-LISTART sy-vline 
WA_VWRPLTAFV_STR-LISTAPPL sy-vline 
WA_VWRPLTAFV_STR-COL_POS sy-vline 
WA_VWRPLTAFV_STR-FIELDNAME sy-vline 
WA_VWRPLTAFV_STR-TABNAME sy-vline 
WA_VWRPLTAFV_STR-REF_FIELDN sy-vline 
WA_VWRPLTAFV_STR-REF_TABNAM sy-vline 
WA_VWRPLTAFV_STR-CFIELDNAME sy-vline 
WA_VWRPLTAFV_STR-CTABNAME sy-vline 
WA_VWRPLTAFV_STR-QFIELDNAME sy-vline 
WA_VWRPLTAFV_STR-QTABNAME sy-vline 
WA_VWRPLTAFV_STR-ROW_POS sy-vline 
WA_VWRPLTAFV_STR-KEY_ sy-vline 
WA_VWRPLTAFV_STR-KEY_SEL sy-vline 
WA_VWRPLTAFV_STR-ICON sy-vline 
WA_VWRPLTAFV_STR-SYMBOL sy-vline 
WA_VWRPLTAFV_STR-JUST sy-vline 
WA_VWRPLTAFV_STR-LZERO sy-vline 
WA_VWRPLTAFV_STR-NO_SIGN sy-vline 
WA_VWRPLTAFV_STR-NO_ZERO sy-vline 
WA_VWRPLTAFV_STR-NO_SUM sy-vline 
WA_VWRPLTAFV_STR-DO_SUM sy-vline 
WA_VWRPLTAFV_STR-NO_OUT sy-vline 
WA_VWRPLTAFV_STR-SP_GROUP sy-vline 
WA_VWRPLTAFV_STR-OFFSET_ sy-vline 
WA_VWRPLTAFV_STR-REPREP sy-vline 
WA_VWRPLTAFV_STR-TECH sy-vline 
WA_VWRPLTAFV_STR-REPTEXT sy-vline 
WA_VWRPLTAFV_STR-SELTEXT sy-vline 
WA_VWRPLTAFV_STR-DDICTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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