ABAP Select data from SAP table WDFR_EINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDFR_EINT
*  INTO TABLE @DATA(IT_WDFR_EINT2).
*--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_WDFR_EINT INDEX 1 INTO DATA(WA_WDFR_EINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDFR_EINT>-IBELN = 1.
<WDFR_EINT>-WERKS = 1.
<WDFR_EINT>-DISPNR = 1.
<WDFR_EINT>-ABNNR = 1.
<WDFR_EINT>-EINTNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDFR_EINT-MATNR, sy-vline,
  WA_WDFR_EINT-LIFNR, sy-vline,
  WA_WDFR_EINT-LOCNR, sy-vline,
  WA_WDFR_EINT-TABIX, sy-vline,
  WA_WDFR_EINT-SELKZ, sy-vline,
  WA_WDFR_EINT-IPOSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDFR_EINT 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_WDFR_EINT 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_WDFR_EINT INTO WA_WDFR_EINT.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_EINT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_EINT-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_EINT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_EINT-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_EINT-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_EINT-BASME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_EINT-FBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_EINT-FBELN.
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_WDFR_EINT_STR, 
IBELN TYPE STRING,
WERKS TYPE STRING,
DISPNR TYPE STRING,
ABNNR TYPE STRING,
EINTNR TYPE STRING,
MATNR TYPE STRING,
LIFNR TYPE STRING,
LOCNR TYPE STRING,
TABIX TYPE STRING,
SELKZ TYPE STRING,
IPOSN TYPE STRING,
IPOSB TYPE STRING,
IPOSA TYPE STRING,
IEINT TYPE STRING,
MEINS TYPE STRING,
LMENGE TYPE STRING,
LEIND TYPE STRING,
LZEIT TYPE STRING,
LWPRZ TYPE STRING,
BMENGE TYPE STRING,
BASME TYPE STRING,
UPDKZ TYPE STRING,
FBELN TYPE STRING,
FPOSN TYPE STRING,
FPOSB TYPE STRING,
FPOSA TYPE STRING,
FEINT TYPE STRING,
CHANGED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDFR_EINT_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_WDFR_EINT_STR-IBELN sy-vline 
WA_WDFR_EINT_STR-WERKS sy-vline 
WA_WDFR_EINT_STR-DISPNR sy-vline 
WA_WDFR_EINT_STR-ABNNR sy-vline 
WA_WDFR_EINT_STR-EINTNR sy-vline 
WA_WDFR_EINT_STR-MATNR sy-vline 
WA_WDFR_EINT_STR-LIFNR sy-vline 
WA_WDFR_EINT_STR-LOCNR sy-vline 
WA_WDFR_EINT_STR-TABIX sy-vline 
WA_WDFR_EINT_STR-SELKZ sy-vline 
WA_WDFR_EINT_STR-IPOSN sy-vline 
WA_WDFR_EINT_STR-IPOSB sy-vline 
WA_WDFR_EINT_STR-IPOSA sy-vline 
WA_WDFR_EINT_STR-IEINT sy-vline 
WA_WDFR_EINT_STR-MEINS sy-vline 
WA_WDFR_EINT_STR-LMENGE sy-vline 
WA_WDFR_EINT_STR-LEIND sy-vline 
WA_WDFR_EINT_STR-LZEIT sy-vline 
WA_WDFR_EINT_STR-LWPRZ sy-vline 
WA_WDFR_EINT_STR-BMENGE sy-vline 
WA_WDFR_EINT_STR-BASME sy-vline 
WA_WDFR_EINT_STR-UPDKZ sy-vline 
WA_WDFR_EINT_STR-FBELN sy-vline 
WA_WDFR_EINT_STR-FPOSN sy-vline 
WA_WDFR_EINT_STR-FPOSB sy-vline 
WA_WDFR_EINT_STR-FPOSA sy-vline 
WA_WDFR_EINT_STR-FEINT sy-vline 
WA_WDFR_EINT_STR-CHANGED sy-vline      INTO ld_text SEPARATED BY SPACE.

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