ABAP Select data from SAP table VIREKEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIREKEY
*  INTO TABLE @DATA(IT_VIREKEY2).
*--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_VIREKEY INDEX 1 INTO DATA(WA_VIREKEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIREKEY>-IMKOB = 1.
<VIREKEY>-MANDT = 1.
<VIREKEY>-BUKRS = 1.
<VIREKEY>-SWENR = 1.
<VIREKEY>-SGRNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIREKEY-SGENR, sy-vline,
  WA_VIREKEY-SMENR, sy-vline,
  WA_VIREKEY-SMIVE, sy-vline,
  WA_VIREKEY-SVWNR, sy-vline,
  WA_VIREKEY-RECNNR, sy-vline,
  WA_VIREKEY-SNKSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIREKEY 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_VIREKEY 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_VIREKEY INTO WA_VIREKEY.


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

*Conversion exit SGRNR, internal->external for field SGRNR
CALL FUNCTION 'CONVERSION_EXIT_SGRNR_OUTPUT'
  EXPORTING
    input =                      WA_VIREKEY-SGRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIREKEY-SGRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGENR, internal->external for field SGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_VIREKEY-SGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIREKEY-SGENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field SMENR
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_VIREKEY-SMENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIREKEY-SMENR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PLSUBDIVNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIREKEY-PLSUBDIVNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIREKEY-PLSUBDIVNO.
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_VIREKEY_STR, 
IMKOB TYPE STRING,
MANDT TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGRNR TYPE STRING,
SGENR TYPE STRING,
SMENR TYPE STRING,
SMIVE TYPE STRING,
SVWNR TYPE STRING,
RECNNR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
DPERBEG TYPE STRING,
NPERSOND TYPE STRING,
INTRENO TYPE STRING,
IMKEY TYPE STRING,
OBJNR TYPE STRING,
SBWNR TYPE STRING,
SMVANG TYPE STRING,
SRAUMEXT TYPE STRING,
SGRUNDB TYPE STRING,
GUELTAB TYPE STRING,
GUELTBIS TYPE STRING,
KUEZU TYPE STRING,
SIDGDEMAND TYPE STRING,
TCNO TYPE STRING,
LOCHIER TYPE STRING,
PLSUBDIVNO TYPE STRING,
PLNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIREKEY_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_VIREKEY_STR-IMKOB sy-vline 
WA_VIREKEY_STR-MANDT sy-vline 
WA_VIREKEY_STR-BUKRS sy-vline 
WA_VIREKEY_STR-SWENR sy-vline 
WA_VIREKEY_STR-SGRNR sy-vline 
WA_VIREKEY_STR-SGENR sy-vline 
WA_VIREKEY_STR-SMENR sy-vline 
WA_VIREKEY_STR-SMIVE sy-vline 
WA_VIREKEY_STR-SVWNR sy-vline 
WA_VIREKEY_STR-RECNNR sy-vline 
WA_VIREKEY_STR-SNKSL sy-vline 
WA_VIREKEY_STR-SEMPSL sy-vline 
WA_VIREKEY_STR-DPERBEG sy-vline 
WA_VIREKEY_STR-NPERSOND sy-vline 
WA_VIREKEY_STR-INTRENO sy-vline 
WA_VIREKEY_STR-IMKEY sy-vline 
WA_VIREKEY_STR-OBJNR sy-vline 
WA_VIREKEY_STR-SBWNR sy-vline 
WA_VIREKEY_STR-SMVANG sy-vline 
WA_VIREKEY_STR-SRAUMEXT sy-vline 
WA_VIREKEY_STR-SGRUNDB sy-vline 
WA_VIREKEY_STR-GUELTAB sy-vline 
WA_VIREKEY_STR-GUELTBIS sy-vline 
WA_VIREKEY_STR-KUEZU sy-vline 
WA_VIREKEY_STR-SIDGDEMAND sy-vline 
WA_VIREKEY_STR-TCNO sy-vline 
WA_VIREKEY_STR-LOCHIER sy-vline 
WA_VIREKEY_STR-PLSUBDIVNO sy-vline 
WA_VIREKEY_STR-PLNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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