ABAP Select data from SAP table RFVWLSP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVWLSP
*  INTO TABLE @DATA(IT_RFVWLSP2).
*--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_RFVWLSP INDEX 1 INTO DATA(WA_RFVWLSP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVWLSP>-DVONDAT = 1.
<RFVWLSP>-DBISDAT = 1.
<RFVWLSP>-JOERTG = 1.
<RFVWLSP>-JPLANS = 1.
<RFVWLSP>-KONTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVWLSP-NLFDX, sy-vline,
  WA_RFVWLSP-KONTXTA, sy-vline,
  WA_RFVWLSP-NLFDY, sy-vline,
  WA_RFVWLSP-LISTARTY, sy-vline,
  WA_RFVWLSP-SZEILE, sy-vline,
  WA_RFVWLSP-SSPALTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVWLSP 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_RFVWLSP 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_RFVWLSP INTO WA_RFVWLSP.


*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.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFVWLSP-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVWLSP-GJAHR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RFVWLSP_STR, 
DVONDAT TYPE STRING,
DBISDAT TYPE STRING,
JOERTG TYPE STRING,
JPLANS TYPE STRING,
KONTXT TYPE STRING,
NLFDX TYPE STRING,
KONTXTA TYPE STRING,
NLFDY TYPE STRING,
LISTARTY TYPE STRING,
SZEILE TYPE STRING,
SSPALTE TYPE STRING,
CPLANS TYPE STRING,
SBEWART TYPE STRING,
RANTYP TYPE STRING,
MANDT TYPE STRING,
JWHRS TYPE STRING,
ESATZ TYPE STRING,
DSTICHF TYPE STRING,
DSTICHBEST TYPE STRING,
XFPROT TYPE STRING,
XBWHR TYPE STRING,
XSKTOSORT TYPE STRING,
SBEZTYP TYPE STRING,
XAKTIE TYPE STRING,
XANLEIHE TYPE STRING,
XTERMIN TYPE STRING,
KDBKURS TYPE STRING,
KDDKURS TYPE STRING,
KHWKURS TYPE STRING,
SSKAL TYPE STRING,
STAGMOJA TYPE STRING,
XDETAIL TYPE STRING,
XSORTART TYPE STRING,
JWERTP TYPE STRING,
JDARL TYPE STRING,
JDEVISEN TYPE STRING,
JGELDHA TYPE STRING,
JDERIVAT TYPE STRING,
JDER_OTC TYPE STRING,
JDER_LOF TYPE STRING,
GJAHR TYPE STRING,
BILABMON TYPE STRING,
SREPORTING TYPE STRING,
VERSGSJ TYPE STRING,
VVBUKRS TYPE STRING,
FDZZFDW1 TYPE STRING,
FDZZFDT1 TYPE STRING,
FDZZFDD1 TYPE STRING,
KURSDAT TYPE STRING,
XUPDATE TYPE STRING,
XPLANSATZ TYPE STRING,
XUMBUCH TYPE STRING,
XBUCH_NK TYPE STRING,
NZWISCHSUM TYPE STRING,
JSUMPLAN TYPE STRING,
MAHNZUSW TYPE STRING,
VVGRPSUM TYPE STRING,
VVSUBTOT TYPE STRING,
VVSTIKEZ TYPE STRING,
XAUSZDARL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVWLSP_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_RFVWLSP_STR-DVONDAT sy-vline 
WA_RFVWLSP_STR-DBISDAT sy-vline 
WA_RFVWLSP_STR-JOERTG sy-vline 
WA_RFVWLSP_STR-JPLANS sy-vline 
WA_RFVWLSP_STR-KONTXT sy-vline 
WA_RFVWLSP_STR-NLFDX sy-vline 
WA_RFVWLSP_STR-KONTXTA sy-vline 
WA_RFVWLSP_STR-NLFDY sy-vline 
WA_RFVWLSP_STR-LISTARTY sy-vline 
WA_RFVWLSP_STR-SZEILE sy-vline 
WA_RFVWLSP_STR-SSPALTE sy-vline 
WA_RFVWLSP_STR-CPLANS sy-vline 
WA_RFVWLSP_STR-SBEWART sy-vline 
WA_RFVWLSP_STR-RANTYP sy-vline 
WA_RFVWLSP_STR-MANDT sy-vline 
WA_RFVWLSP_STR-JWHRS sy-vline 
WA_RFVWLSP_STR-ESATZ sy-vline 
WA_RFVWLSP_STR-DSTICHF sy-vline 
WA_RFVWLSP_STR-DSTICHBEST sy-vline 
WA_RFVWLSP_STR-XFPROT sy-vline 
WA_RFVWLSP_STR-XBWHR sy-vline 
WA_RFVWLSP_STR-XSKTOSORT sy-vline 
WA_RFVWLSP_STR-SBEZTYP sy-vline 
WA_RFVWLSP_STR-XAKTIE sy-vline 
WA_RFVWLSP_STR-XANLEIHE sy-vline 
WA_RFVWLSP_STR-XTERMIN sy-vline 
WA_RFVWLSP_STR-KDBKURS sy-vline 
WA_RFVWLSP_STR-KDDKURS sy-vline 
WA_RFVWLSP_STR-KHWKURS sy-vline 
WA_RFVWLSP_STR-SSKAL sy-vline 
WA_RFVWLSP_STR-STAGMOJA sy-vline 
WA_RFVWLSP_STR-XDETAIL sy-vline 
WA_RFVWLSP_STR-XSORTART sy-vline 
WA_RFVWLSP_STR-JWERTP sy-vline 
WA_RFVWLSP_STR-JDARL sy-vline 
WA_RFVWLSP_STR-JDEVISEN sy-vline 
WA_RFVWLSP_STR-JGELDHA sy-vline 
WA_RFVWLSP_STR-JDERIVAT sy-vline 
WA_RFVWLSP_STR-JDER_OTC sy-vline 
WA_RFVWLSP_STR-JDER_LOF sy-vline 
WA_RFVWLSP_STR-GJAHR sy-vline 
WA_RFVWLSP_STR-BILABMON sy-vline 
WA_RFVWLSP_STR-SREPORTING sy-vline 
WA_RFVWLSP_STR-VERSGSJ sy-vline 
WA_RFVWLSP_STR-VVBUKRS sy-vline 
WA_RFVWLSP_STR-FDZZFDW1 sy-vline 
WA_RFVWLSP_STR-FDZZFDT1 sy-vline 
WA_RFVWLSP_STR-FDZZFDD1 sy-vline 
WA_RFVWLSP_STR-KURSDAT sy-vline 
WA_RFVWLSP_STR-XUPDATE sy-vline 
WA_RFVWLSP_STR-XPLANSATZ sy-vline 
WA_RFVWLSP_STR-XUMBUCH sy-vline 
WA_RFVWLSP_STR-XBUCH_NK sy-vline 
WA_RFVWLSP_STR-NZWISCHSUM sy-vline 
WA_RFVWLSP_STR-JSUMPLAN sy-vline 
WA_RFVWLSP_STR-MAHNZUSW sy-vline 
WA_RFVWLSP_STR-VVGRPSUM sy-vline 
WA_RFVWLSP_STR-VVSUBTOT sy-vline 
WA_RFVWLSP_STR-VVSTIKEZ sy-vline 
WA_RFVWLSP_STR-XAUSZDARL sy-vline      INTO ld_text SEPARATED BY SPACE.

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