ABAP Select data from SAP table VN1EDRUG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1EDRUG 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 VN1EDRUG. 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 VN1EDRUG 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_VN1EDRUG TYPE STANDARD TABLE OF VN1EDRUG,
      WA_VN1EDRUG TYPE VN1EDRUG,
      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: <VN1EDRUG> TYPE VN1EDRUG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1EDRUG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1EDRUG
  INTO TABLE IT_VN1EDRUG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1EDRUG
*  INTO TABLE @DATA(IT_VN1EDRUG2).
*--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_VN1EDRUG INDEX 1 INTO DATA(WA_VN1EDRUG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1EDRUG ASSIGNING <VN1EDRUG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1EDRUG>-MANDT = 1.
<VN1EDRUG>-EDRUGID = 1.
<VN1EDRUG>-MEEVTID = 1.
<VN1EDRUG>-MEORDID = 1.
<VN1EDRUG>-EINRI = 1.

ENDLOOP.

LOOP AT IT_VN1EDRUG INTO WA_VN1EDRUG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1EDRUG-DRUGID, sy-vline,
  WA_VN1EDRUG-DRUGTYP, sy-vline,
  WA_VN1EDRUG-PDRUGDQ, sy-vline,
  WA_VN1EDRUG-RDRUGDQ, sy-vline,
  WA_VN1EDRUG-SCRAP, sy-vline,
  WA_VN1EDRUG-DRUGU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1EDRUG 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_VN1EDRUG 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_VN1EDRUG INTO WA_VN1EDRUG.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field PDRUGDQ
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-PDRUGDQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-PDRUGDQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field RDRUGDQ
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-RDRUGDQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-RDRUGDQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field SCRAP
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-SCRAP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-SCRAP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field PDRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-PDRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-PDRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field RDRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-RDRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-RDRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field STRGTH
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-STRGTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-STRGTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field STRGTHU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-STRGTHU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-STRGTHU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field STRGTHP
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-STRGTHP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-STRGTHP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field STRGTHPU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-STRGTHPU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-STRGTHPU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field OPDRUGDQ
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1EDRUG-OPDRUGDQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1EDRUG-OPDRUGDQ.
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_VN1EDRUG_STR, 
MANDT TYPE STRING,
EDRUGID TYPE STRING,
MEEVTID TYPE STRING,
MEORDID TYPE STRING,
EINRI TYPE STRING,
DRUGID TYPE STRING,
DRUGTYP TYPE STRING,
PDRUGDQ TYPE STRING,
RDRUGDQ TYPE STRING,
SCRAP TYPE STRING,
DRUGU TYPE STRING,
PDRUGASTR TYPE STRING,
RDRUGASTR TYPE STRING,
DRUGASTRU TYPE STRING,
CALCREL TYPE STRING,
FSOURCE TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
PICKLIST TYPE STRING,
MJAHR TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
STOID TYPE STRING,
STRGTH TYPE STRING,
STRGTHU TYPE STRING,
STRGTHP TYPE STRING,
STRGTHPU TYPE STRING,
OPDRUGDQ TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1EDRUG_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_VN1EDRUG_STR-MANDT sy-vline 
WA_VN1EDRUG_STR-EDRUGID sy-vline 
WA_VN1EDRUG_STR-MEEVTID sy-vline 
WA_VN1EDRUG_STR-MEORDID sy-vline 
WA_VN1EDRUG_STR-EINRI sy-vline 
WA_VN1EDRUG_STR-DRUGID sy-vline 
WA_VN1EDRUG_STR-DRUGTYP sy-vline 
WA_VN1EDRUG_STR-PDRUGDQ sy-vline 
WA_VN1EDRUG_STR-RDRUGDQ sy-vline 
WA_VN1EDRUG_STR-SCRAP sy-vline 
WA_VN1EDRUG_STR-DRUGU sy-vline 
WA_VN1EDRUG_STR-PDRUGASTR sy-vline 
WA_VN1EDRUG_STR-RDRUGASTR sy-vline 
WA_VN1EDRUG_STR-DRUGASTRU sy-vline 
WA_VN1EDRUG_STR-CALCREL sy-vline 
WA_VN1EDRUG_STR-FSOURCE sy-vline 
WA_VN1EDRUG_STR-MATNR sy-vline 
WA_VN1EDRUG_STR-WERKS sy-vline 
WA_VN1EDRUG_STR-CHARG sy-vline 
WA_VN1EDRUG_STR-PICKLIST sy-vline 
WA_VN1EDRUG_STR-MJAHR sy-vline 
WA_VN1EDRUG_STR-ERDAT sy-vline 
WA_VN1EDRUG_STR-ERTIM sy-vline 
WA_VN1EDRUG_STR-ERUSR sy-vline 
WA_VN1EDRUG_STR-UPDAT sy-vline 
WA_VN1EDRUG_STR-UPTIM sy-vline 
WA_VN1EDRUG_STR-UPUSR sy-vline 
WA_VN1EDRUG_STR-STORN sy-vline 
WA_VN1EDRUG_STR-STUSR sy-vline 
WA_VN1EDRUG_STR-STDAT sy-vline 
WA_VN1EDRUG_STR-STOID sy-vline 
WA_VN1EDRUG_STR-STRGTH sy-vline 
WA_VN1EDRUG_STR-STRGTHU sy-vline 
WA_VN1EDRUG_STR-STRGTHP sy-vline 
WA_VN1EDRUG_STR-STRGTHPU sy-vline 
WA_VN1EDRUG_STR-OPDRUGDQ sy-vline 
WA_VN1EDRUG_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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