ABAP Select data from SAP table FKKINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINT
*  INTO TABLE @DATA(IT_FKKINT2).
*--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_FKKINT INDEX 1 INTO DATA(WA_FKKINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINT>-I_POSNO = 1.
<FKKINT>-E_UPOSNO = 1.
<FKKINT>-E_UPOSNO2 = 1.
<FKKINT>-I_CLIENT = 1.
<FKKINT>-I_IRULE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINT-I_INTINT, sy-vline,
  WA_FKKINT-I_FROMDAT, sy-vline,
  WA_FKKINT-I_TODAT, sy-vline,
  WA_FKKINT-I_KEYDAT, sy-vline,
  WA_FKKINT-I_KEYDAY, sy-vline,
  WA_FKKINT-I_AMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINT 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_FKKINT 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_FKKINT INTO WA_FKKINT.


*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 I_IRULE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINT-I_IRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINT-I_IRULE.
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_FKKINT_STR, 
I_POSNO TYPE STRING,
E_UPOSNO TYPE STRING,
E_UPOSNO2 TYPE STRING,
I_CLIENT TYPE STRING,
I_IRULE TYPE STRING,
I_INTINT TYPE STRING,
I_FROMDAT TYPE STRING,
I_TODAT TYPE STRING,
I_KEYDAT TYPE STRING,
I_KEYDAY TYPE STRING,
I_AMOUNT TYPE STRING,
I_CURR TYPE STRING,
I_BUKRS TYPE STRING,
I_NEGCALC TYPE STRING,
E_INT TYPE STRING,
E_INTNUM TYPE STRING,
E_DAYS TYPE STRING,
E_RATE TYPE STRING,
E_RC TYPE STRING,
E_EXCT TYPE STRING,
E_INTGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINT_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_FKKINT_STR-I_POSNO sy-vline 
WA_FKKINT_STR-E_UPOSNO sy-vline 
WA_FKKINT_STR-E_UPOSNO2 sy-vline 
WA_FKKINT_STR-I_CLIENT sy-vline 
WA_FKKINT_STR-I_IRULE sy-vline 
WA_FKKINT_STR-I_INTINT sy-vline 
WA_FKKINT_STR-I_FROMDAT sy-vline 
WA_FKKINT_STR-I_TODAT sy-vline 
WA_FKKINT_STR-I_KEYDAT sy-vline 
WA_FKKINT_STR-I_KEYDAY sy-vline 
WA_FKKINT_STR-I_AMOUNT sy-vline 
WA_FKKINT_STR-I_CURR sy-vline 
WA_FKKINT_STR-I_BUKRS sy-vline 
WA_FKKINT_STR-I_NEGCALC sy-vline 
WA_FKKINT_STR-E_INT sy-vline 
WA_FKKINT_STR-E_INTNUM sy-vline 
WA_FKKINT_STR-E_DAYS sy-vline 
WA_FKKINT_STR-E_RATE sy-vline 
WA_FKKINT_STR-E_RC sy-vline 
WA_FKKINT_STR-E_EXCT sy-vline 
WA_FKKINT_STR-E_INTGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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