ABAP Select data from SAP table WDL_FIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDL_FIL
*  INTO TABLE @DATA(IT_WDL_FIL2).
*--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_WDL_FIL INDEX 1 INTO DATA(WA_WDL_FIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDL_FIL>-ASORT = 1.
<WDL_FIL>-WERKS = 1.
<WDL_FIL>-LOCNR = 1.
<WDL_FIL>-VLFKZ = 1.
<WDL_FIL>-KOPRO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDL_FIL-VKORG, sy-vline,
  WA_WDL_FIL-VTWEG, sy-vline,
  WA_WDL_FIL-VTWKO, sy-vline,
  WA_WDL_FIL-VLTYP, sy-vline,
  WA_WDL_FIL-VLKEB, sy-vline,
  WA_WDL_FIL-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDL_FIL 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_WDL_FIL 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_WDL_FIL INTO WA_WDL_FIL.


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

*Conversion exit ALPHA, internal->external for field LOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WDL_FIL-LOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDL_FIL-LOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WDL_FIL-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDL_FIL-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WDL_FIL-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDL_FIL-KUNNR.
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_WDL_FIL_STR, 
ASORT TYPE STRING,
WERKS TYPE STRING,
LOCNR TYPE STRING,
VLFKZ TYPE STRING,
KOPRO TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
VTWKO TYPE STRING,
VLTYP TYPE STRING,
VLKEB TYPE STRING,
EKORG TYPE STRING,
NAME1 TYPE STRING,
SPRAS TYPE STRING,
WAERS TYPE STRING,
POSWS TYPE STRING,
SPART TYPE STRING,
LAND1 TYPE STRING,
KUNNR TYPE STRING,
PLTYP TYPE STRING,
FABKL TYPE STRING,
UMTYP TYPE STRING,
VZEIT TYPE STRING,
ERMOD TYPE STRING,
POSDEX TYPE STRING,
EKOAR TYPE STRING,
SPMDL TYPE STRING,
BBPRO TYPE STRING,
BBVZEIT TYPE STRING,
DATAB TYPE STRING,
TIMEAB TYPE STRING,
LAYVR TYPE STRING,
VERSNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDL_FIL_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_WDL_FIL_STR-ASORT sy-vline 
WA_WDL_FIL_STR-WERKS sy-vline 
WA_WDL_FIL_STR-LOCNR sy-vline 
WA_WDL_FIL_STR-VLFKZ sy-vline 
WA_WDL_FIL_STR-KOPRO sy-vline 
WA_WDL_FIL_STR-VKORG sy-vline 
WA_WDL_FIL_STR-VTWEG sy-vline 
WA_WDL_FIL_STR-VTWKO sy-vline 
WA_WDL_FIL_STR-VLTYP sy-vline 
WA_WDL_FIL_STR-VLKEB sy-vline 
WA_WDL_FIL_STR-EKORG sy-vline 
WA_WDL_FIL_STR-NAME1 sy-vline 
WA_WDL_FIL_STR-SPRAS sy-vline 
WA_WDL_FIL_STR-WAERS sy-vline 
WA_WDL_FIL_STR-POSWS sy-vline 
WA_WDL_FIL_STR-SPART sy-vline 
WA_WDL_FIL_STR-LAND1 sy-vline 
WA_WDL_FIL_STR-KUNNR sy-vline 
WA_WDL_FIL_STR-PLTYP sy-vline 
WA_WDL_FIL_STR-FABKL sy-vline 
WA_WDL_FIL_STR-UMTYP sy-vline 
WA_WDL_FIL_STR-VZEIT sy-vline 
WA_WDL_FIL_STR-ERMOD sy-vline 
WA_WDL_FIL_STR-POSDEX sy-vline 
WA_WDL_FIL_STR-EKOAR sy-vline 
WA_WDL_FIL_STR-SPMDL sy-vline 
WA_WDL_FIL_STR-BBPRO sy-vline 
WA_WDL_FIL_STR-BBVZEIT sy-vline 
WA_WDL_FIL_STR-DATAB sy-vline 
WA_WDL_FIL_STR-TIMEAB sy-vline 
WA_WDL_FIL_STR-LAYVR sy-vline 
WA_WDL_FIL_STR-VERSNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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