ABAP Select data from SAP table WRF6D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRF6D 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 WRF6D. 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 WRF6D 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_WRF6D TYPE STANDARD TABLE OF WRF6D,
      WA_WRF6D TYPE WRF6D,
      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: <WRF6D> TYPE WRF6D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WRF6D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WRF6D
  INTO TABLE IT_WRF6D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF6D
*  INTO TABLE @DATA(IT_WRF6D2).
*--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_WRF6D INDEX 1 INTO DATA(WA_WRF6D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WRF6D ASSIGNING <WRF6D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF6D>-MANDT = 1.
<WRF6D>-LOCNR = 1.
<WRF6D>-MATKL = 1.
<WRF6D>-SSTUF = 1.
<WRF6D>-SORBR = 1.

ENDLOOP.

LOOP AT IT_WRF6D INTO WA_WRF6D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF6D-ABTNR, sy-vline,
  WA_WRF6D-PRIOT, sy-vline,
  WA_WRF6D-DISPR, sy-vline,
  WA_WRF6D-PROPR, sy-vline,
  WA_WRF6D-PRIMW, sy-vline,
  WA_WRF6D-UPROF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF6D 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_WRF6D 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_WRF6D INTO WA_WRF6D.


*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 LOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF6D-LOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF6D-LOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UPROF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF6D-UPROF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF6D-UPROF.
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_WRF6D_STR, 
MANDT TYPE STRING,
LOCNR TYPE STRING,
MATKL TYPE STRING,
SSTUF TYPE STRING,
SORBR TYPE STRING,
ABTNR TYPE STRING,
PRIOT TYPE STRING,
DISPR TYPE STRING,
PROPR TYPE STRING,
PRIMW TYPE STRING,
UPROF TYPE STRING,
WDAUS TYPE STRING,
RQGRP TYPE STRING,
FBPRO TYPE STRING,
PLTYP_P TYPE STRING,
PSTRA TYPE STRING,
MGINT TYPE STRING,
BKBEZ TYPE STRING,
STEXT TYPE STRING,
WGBEZ TYPE STRING,
VTEXT TYPE STRING,
SELKZ TYPE STRING,
MARKI TYPE STRING,
HERKU TYPE STRING,
UPDKZ TYPE STRING,
MARK_ABTNR TYPE STRING,
MARK_SSTUF TYPE STRING,
MARK_PRIOT TYPE STRING,
MARK_SORBR TYPE STRING,
MARK_PRIMW TYPE STRING,
MARK_WDAUS TYPE STRING,
MARK_RQGRP TYPE STRING,
MARK_FBPRO TYPE STRING,
MARK_UPROF TYPE STRING,
MARK_WAGRU TYPE STRING,
MARK_PLTYP_P TYPE STRING,
MARK_PSTRA TYPE STRING,
MARK_MGINT TYPE STRING,
MGEXT TYPE STRING,
KLART TYPE STRING,
KSCHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF6D_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_WRF6D_STR-MANDT sy-vline 
WA_WRF6D_STR-LOCNR sy-vline 
WA_WRF6D_STR-MATKL sy-vline 
WA_WRF6D_STR-SSTUF sy-vline 
WA_WRF6D_STR-SORBR sy-vline 
WA_WRF6D_STR-ABTNR sy-vline 
WA_WRF6D_STR-PRIOT sy-vline 
WA_WRF6D_STR-DISPR sy-vline 
WA_WRF6D_STR-PROPR sy-vline 
WA_WRF6D_STR-PRIMW sy-vline 
WA_WRF6D_STR-UPROF sy-vline 
WA_WRF6D_STR-WDAUS sy-vline 
WA_WRF6D_STR-RQGRP sy-vline 
WA_WRF6D_STR-FBPRO sy-vline 
WA_WRF6D_STR-PLTYP_P sy-vline 
WA_WRF6D_STR-PSTRA sy-vline 
WA_WRF6D_STR-MGINT sy-vline 
WA_WRF6D_STR-BKBEZ sy-vline 
WA_WRF6D_STR-STEXT sy-vline 
WA_WRF6D_STR-WGBEZ sy-vline 
WA_WRF6D_STR-VTEXT sy-vline 
WA_WRF6D_STR-SELKZ sy-vline 
WA_WRF6D_STR-MARKI sy-vline 
WA_WRF6D_STR-HERKU sy-vline 
WA_WRF6D_STR-UPDKZ sy-vline 
WA_WRF6D_STR-MARK_ABTNR sy-vline 
WA_WRF6D_STR-MARK_SSTUF sy-vline 
WA_WRF6D_STR-MARK_PRIOT sy-vline 
WA_WRF6D_STR-MARK_SORBR sy-vline 
WA_WRF6D_STR-MARK_PRIMW sy-vline 
WA_WRF6D_STR-MARK_WDAUS sy-vline 
WA_WRF6D_STR-MARK_RQGRP sy-vline 
WA_WRF6D_STR-MARK_FBPRO sy-vline 
WA_WRF6D_STR-MARK_UPROF sy-vline 
WA_WRF6D_STR-MARK_WAGRU sy-vline 
WA_WRF6D_STR-MARK_PLTYP_P sy-vline 
WA_WRF6D_STR-MARK_PSTRA sy-vline 
WA_WRF6D_STR-MARK_MGINT sy-vline 
WA_WRF6D_STR-MGEXT sy-vline 
WA_WRF6D_STR-KLART sy-vline 
WA_WRF6D_STR-KSCHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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