ABAP Select data from SAP table IKOFI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IKOFI
*  INTO TABLE @DATA(IT_IKOFI2).
*--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_IKOFI INDEX 1 INTO DATA(WA_IKOFI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IKOFI>-ANWND = 1.
<IKOFI>-EIGR1 = 1.
<IKOFI>-EIGR2 = 1.
<IKOFI>-EIGR3 = 1.
<IKOFI>-EIGR4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IKOFI-KTOPL, sy-vline,
  WA_IKOFI-KOMO1, sy-vline,
  WA_IKOFI-KOMO2, sy-vline,
  WA_IKOFI-SAKIN, sy-vline,
  WA_IKOFI-BSCH1, sy-vline,
  WA_IKOFI-KTOS1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IKOFI 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_IKOFI 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_IKOFI INTO WA_IKOFI.


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

*Conversion exit ALPHA, internal->external for field SAKN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IKOFI-SAKN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKOFI-SAKN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IKOFI-SAKN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKOFI-SAKN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKINB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IKOFI-SAKINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKOFI-SAKINB.
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_IKOFI_STR, 
ANWND TYPE STRING,
EIGR1 TYPE STRING,
EIGR2 TYPE STRING,
EIGR3 TYPE STRING,
EIGR4 TYPE STRING,
KTOPL TYPE STRING,
KOMO1 TYPE STRING,
KOMO2 TYPE STRING,
SAKIN TYPE STRING,
BSCH1 TYPE STRING,
KTOS1 TYPE STRING,
SHBK1 TYPE STRING,
KOMK1 TYPE STRING,
SAKN1 TYPE STRING,
BSCH2 TYPE STRING,
KTOS2 TYPE STRING,
SHBK2 TYPE STRING,
KOMK2 TYPE STRING,
SAKN2 TYPE STRING,
FPART TYPE STRING,
ATTR1 TYPE STRING,
ATTR2 TYPE STRING,
KOMO1B TYPE STRING,
KOMO2B TYPE STRING,
SAKINB TYPE STRING,
STGRD TYPE STRING,
BSCAK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IKOFI_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_IKOFI_STR-ANWND sy-vline 
WA_IKOFI_STR-EIGR1 sy-vline 
WA_IKOFI_STR-EIGR2 sy-vline 
WA_IKOFI_STR-EIGR3 sy-vline 
WA_IKOFI_STR-EIGR4 sy-vline 
WA_IKOFI_STR-KTOPL sy-vline 
WA_IKOFI_STR-KOMO1 sy-vline 
WA_IKOFI_STR-KOMO2 sy-vline 
WA_IKOFI_STR-SAKIN sy-vline 
WA_IKOFI_STR-BSCH1 sy-vline 
WA_IKOFI_STR-KTOS1 sy-vline 
WA_IKOFI_STR-SHBK1 sy-vline 
WA_IKOFI_STR-KOMK1 sy-vline 
WA_IKOFI_STR-SAKN1 sy-vline 
WA_IKOFI_STR-BSCH2 sy-vline 
WA_IKOFI_STR-KTOS2 sy-vline 
WA_IKOFI_STR-SHBK2 sy-vline 
WA_IKOFI_STR-KOMK2 sy-vline 
WA_IKOFI_STR-SAKN2 sy-vline 
WA_IKOFI_STR-FPART sy-vline 
WA_IKOFI_STR-ATTR1 sy-vline 
WA_IKOFI_STR-ATTR2 sy-vline 
WA_IKOFI_STR-KOMO1B sy-vline 
WA_IKOFI_STR-KOMO2B sy-vline 
WA_IKOFI_STR-SAKINB sy-vline 
WA_IKOFI_STR-STGRD sy-vline 
WA_IKOFI_STR-BSCAK sy-vline      INTO ld_text SEPARATED BY SPACE.

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