ABAP Select data from SAP table LFVI9 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LFVI9 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 LFVI9. 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 LFVI9 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_LFVI9 TYPE STANDARD TABLE OF LFVI9,
      WA_LFVI9 TYPE LFVI9,
      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: <LFVI9> TYPE LFVI9.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LFVI9.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LFVI9
  INTO TABLE IT_LFVI9.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LFVI9
*  INTO TABLE @DATA(IT_LFVI92).
*--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_LFVI9 INDEX 1 INTO DATA(WA_LFVI92).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LFVI9 ASSIGNING <LFVI9>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LFVI9>-BUKRS = 1.
<LFVI9>-WENR = 1.
<LFVI9>-GRNR = 1.
<LFVI9>-GENR = 1.
<LFVI9>-MENR = 1.

ENDLOOP.

LOOP AT IT_LFVI9 INTO WA_LFVI9.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LFVI9-NKSL, sy-vline,
  WA_LFVI9-EMPSL, sy-vline,
  WA_LFVI9-MIVE, sy-vline,
  WA_LFVI9-IMKEY, sy-vline,
  WA_LFVI9-DABRBEZ, sy-vline,
  WA_LFVI9-POPTSATZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LFVI9 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_LFVI9 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_LFVI9 INTO WA_LFVI9.


*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 WENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-WENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-WENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGRNR, internal->external for field GRNR
CALL FUNCTION 'CONVERSION_EXIT_SGRNR_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-GRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-GRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGENR, internal->external for field GENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-GENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-GENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field MENR
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-MENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-MENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NKSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-NKSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-NKSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-EMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-EMPSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MIVE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-MIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-MIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SBERI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-SBERI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-SBERI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SVWNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-SVWNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-SVWNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field E_MIVE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-E_MIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-E_MIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LFVI9-RECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LFVI9-RECNNR.
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_LFVI9_STR, 
BUKRS TYPE STRING,
WENR TYPE STRING,
GRNR TYPE STRING,
GENR TYPE STRING,
MENR TYPE STRING,
NKSL TYPE STRING,
EMPSL TYPE STRING,
MIVE TYPE STRING,
IMKEY TYPE STRING,
DABRBEZ TYPE STRING,
POPTSATZ TYPE STRING,
WAERS TYPE STRING,
ISOCD TYPE STRING,
WMWST TYPE STRING,
MWSKZ TYPE STRING,
NABFW TYPE STRING,
ABZFW TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
SBERI TYPE STRING,
SNKS TYPE STRING,
PVORSATZ TYPE STRING,
BUDAT TYPE STRING,
OBJ_TXT TYPE STRING,
SVWNR TYPE STRING,
INTRENO TYPE STRING,
VVIMKOB TYPE STRING,
E_MIVE TYPE STRING,
RECNNR TYPE STRING,
RECNTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LFVI9_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_LFVI9_STR-BUKRS sy-vline 
WA_LFVI9_STR-WENR sy-vline 
WA_LFVI9_STR-GRNR sy-vline 
WA_LFVI9_STR-GENR sy-vline 
WA_LFVI9_STR-MENR sy-vline 
WA_LFVI9_STR-NKSL sy-vline 
WA_LFVI9_STR-EMPSL sy-vline 
WA_LFVI9_STR-MIVE sy-vline 
WA_LFVI9_STR-IMKEY sy-vline 
WA_LFVI9_STR-DABRBEZ sy-vline 
WA_LFVI9_STR-POPTSATZ sy-vline 
WA_LFVI9_STR-WAERS sy-vline 
WA_LFVI9_STR-ISOCD sy-vline 
WA_LFVI9_STR-WMWST sy-vline 
WA_LFVI9_STR-MWSKZ sy-vline 
WA_LFVI9_STR-NABFW sy-vline 
WA_LFVI9_STR-ABZFW sy-vline 
WA_LFVI9_STR-ANLN1 sy-vline 
WA_LFVI9_STR-ANLN2 sy-vline 
WA_LFVI9_STR-SBERI sy-vline 
WA_LFVI9_STR-SNKS sy-vline 
WA_LFVI9_STR-PVORSATZ sy-vline 
WA_LFVI9_STR-BUDAT sy-vline 
WA_LFVI9_STR-OBJ_TXT sy-vline 
WA_LFVI9_STR-SVWNR sy-vline 
WA_LFVI9_STR-INTRENO sy-vline 
WA_LFVI9_STR-VVIMKOB sy-vline 
WA_LFVI9_STR-E_MIVE sy-vline 
WA_LFVI9_STR-RECNNR sy-vline 
WA_LFVI9_STR-RECNTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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