ABAP Select data from SAP table VWPT_FREE_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VWPT_FREE_ATTR
*  INTO TABLE @DATA(IT_VWPT_FREE_ATTR2).
*--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_VWPT_FREE_ATTR INDEX 1 INTO DATA(WA_VWPT_FREE_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VWPT_FREE_ATTR>-MANDT = 1.
<VWPT_FREE_ATTR>-RANL = 1.
<VWPT_FREE_ATTR>-SANLF = 1.
<VWPT_FREE_ATTR>-GSART = 1.
<VWPT_FREE_ATTR>-ATTRIBUTE_LI01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VWPT_FREE_ATTR-ATTRIBUTE_LI02, sy-vline,
  WA_VWPT_FREE_ATTR-ATTRIBUTE_LI03, sy-vline,
  WA_VWPT_FREE_ATTR-ATTRIBUTE_LI04, sy-vline,
  WA_VWPT_FREE_ATTR-ATTRIBUTE_LI05, sy-vline,
  WA_VWPT_FREE_ATTR-ATTRIBUTE_SI01, sy-vline,
  WA_VWPT_FREE_ATTR-ATTRIBUTE_SI02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VWPT_FREE_ATTR 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_VWPT_FREE_ATTR 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_VWPT_FREE_ATTR INTO WA_VWPT_FREE_ATTR.


*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 ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWPT_FREE_ATTR-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWPT_FREE_ATTR-RANL.
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_VWPT_FREE_ATTR_STR, 
MANDT TYPE STRING,
RANL TYPE STRING,
SANLF TYPE STRING,
GSART TYPE STRING,
ATTRIBUTE_LI01 TYPE STRING,
ATTRIBUTE_LI02 TYPE STRING,
ATTRIBUTE_LI03 TYPE STRING,
ATTRIBUTE_LI04 TYPE STRING,
ATTRIBUTE_LI05 TYPE STRING,
ATTRIBUTE_SI01 TYPE STRING,
ATTRIBUTE_SI02 TYPE STRING,
ATTRIBUTE_SI03 TYPE STRING,
ATTRIBUTE_SI04 TYPE STRING,
ATTRIBUTE_SI05 TYPE STRING,
ATTRIBUTE_SI06 TYPE STRING,
ATTRIBUTE_SI07 TYPE STRING,
ATTRIBUTE_SI08 TYPE STRING,
ATTRIBUTE_SI09 TYPE STRING,
ATTRIBUTE_SI10 TYPE STRING,
ATTRIBUTE_FR01 TYPE STRING,
ATTRIBUTE_FR02 TYPE STRING,
ATTRIBUTE_FR03 TYPE STRING,
ATTRIBUTE_FR04 TYPE STRING,
ATTRIBUTE_FR05 TYPE STRING,
ATTRIBUTE_DI01 TYPE STRING,
ATTRIBUTE_DI02 TYPE STRING,
ATTRIBUTE_CU01 TYPE STRING,
ATTRIBUTE_CU02 TYPE STRING,
ATTRIBUTE_DTFR TYPE STRING,
ATTRIBUTE_DTTO TYPE STRING,
COVERAGE_ELIG TYPE STRING,
EMBD_DERIVATIVE TYPE STRING,
ORIG_ISSUE_CURR TYPE STRING,
QUOT_BREAKDOWN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VWPT_FREE_ATTR_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_VWPT_FREE_ATTR_STR-MANDT sy-vline 
WA_VWPT_FREE_ATTR_STR-RANL sy-vline 
WA_VWPT_FREE_ATTR_STR-SANLF sy-vline 
WA_VWPT_FREE_ATTR_STR-GSART sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_LI01 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_LI02 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_LI03 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_LI04 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_LI05 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI01 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI02 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI03 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI04 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI05 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI06 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI07 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI08 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI09 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_SI10 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_FR01 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_FR02 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_FR03 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_FR04 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_FR05 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_DI01 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_DI02 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_CU01 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_CU02 sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_DTFR sy-vline 
WA_VWPT_FREE_ATTR_STR-ATTRIBUTE_DTTO sy-vline 
WA_VWPT_FREE_ATTR_STR-COVERAGE_ELIG sy-vline 
WA_VWPT_FREE_ATTR_STR-EMBD_DERIVATIVE sy-vline 
WA_VWPT_FREE_ATTR_STR-ORIG_ISSUE_CURR sy-vline 
WA_VWPT_FREE_ATTR_STR-QUOT_BREAKDOWN sy-vline      INTO ld_text SEPARATED BY SPACE.

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