ABAP Select data from SAP table VIEIGT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIEIGT
*  INTO TABLE @DATA(IT_VIEIGT2).
*--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_VIEIGT INDEX 1 INTO DATA(WA_VIEIGT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIEIGT>-MANDT = 1.
<VIEIGT>-IMKEY = 1.
<VIEIGT>-NLFDEIG = 1.
<VIEIGT>-SOBTYP = 1.
<VIEIGT>-BRUTEIL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIEIGT-BMITEIG, sy-vline,
  WA_VIEIGT-PANTEIL, sy-vline,
  WA_VIEIGT-SPARTNR, sy-vline,
  WA_VIEIGT-ADRTYP, sy-vline,
  WA_VIEIGT-SROLEXT, sy-vline,
  WA_VIEIGT-RFAKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIEIGT 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_VIEIGT 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_VIEIGT INTO WA_VIEIGT.


*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 IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_VIEIGT-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIEIGT-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SVWNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIEIGT-SVWNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIEIGT-SVWNR.
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_VIEIGT_STR, 
MANDT TYPE STRING,
IMKEY TYPE STRING,
NLFDEIG TYPE STRING,
SOBTYP TYPE STRING,
BRUTEIL TYPE STRING,
BMITEIG TYPE STRING,
PANTEIL TYPE STRING,
SPARTNR TYPE STRING,
ADRTYP TYPE STRING,
SROLEXT TYPE STRING,
RFAKT TYPE STRING,
SVWNR TYPE STRING,
DGULTAB TYPE STRING,
DGULTBIS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIEIGT_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_VIEIGT_STR-MANDT sy-vline 
WA_VIEIGT_STR-IMKEY sy-vline 
WA_VIEIGT_STR-NLFDEIG sy-vline 
WA_VIEIGT_STR-SOBTYP sy-vline 
WA_VIEIGT_STR-BRUTEIL sy-vline 
WA_VIEIGT_STR-BMITEIG sy-vline 
WA_VIEIGT_STR-PANTEIL sy-vline 
WA_VIEIGT_STR-SPARTNR sy-vline 
WA_VIEIGT_STR-ADRTYP sy-vline 
WA_VIEIGT_STR-SROLEXT sy-vline 
WA_VIEIGT_STR-RFAKT sy-vline 
WA_VIEIGT_STR-SVWNR sy-vline 
WA_VIEIGT_STR-DGULTAB sy-vline 
WA_VIEIGT_STR-DGULTBIS sy-vline      INTO ld_text SEPARATED BY SPACE.

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