ABAP Select data from SAP table FKK00T into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK00T 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 FKK00T. 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 FKK00T 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_FKK00T TYPE STANDARD TABLE OF FKK00T,
      WA_FKK00T TYPE FKK00T,
      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: <FKK00T> TYPE FKK00T.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKK00T.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKK00T
  INTO TABLE IT_FKK00T.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK00T
*  INTO TABLE @DATA(IT_FKK00T2).
*--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_FKK00T INDEX 1 INTO DATA(WA_FKK00T2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKK00T ASSIGNING <FKK00T>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK00T>-TAX_COUNTRY = 1.
<FKK00T>-BUKRS = 1.
<FKK00T>-XJURI = 1.
<FKK00T>-XEXTN = 1.
<FKK00T>-KALSM = 1.

ENDLOOP.

LOOP AT IT_FKK00T INTO WA_FKK00T.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK00T-LENG1, sy-vline,
  WA_FKK00T-LENG2, sy-vline,
  WA_FKK00T-LENG3, sy-vline,
  WA_FKK00T-LENG4, sy-vline,
  WA_FKK00T-ISOHW, sy-vline,
  WA_FKK00T-ISOH2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK00T 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_FKK00T 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_FKK00T INTO WA_FKK00T.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKK00T_STR, 
TAX_COUNTRY TYPE STRING,
BUKRS TYPE STRING,
XJURI TYPE STRING,
XEXTN TYPE STRING,
KALSM TYPE STRING,
LENG1 TYPE STRING,
LENG2 TYPE STRING,
LENG3 TYPE STRING,
LENG4 TYPE STRING,
ISOHW TYPE STRING,
ISOH2 TYPE STRING,
ISOH3 TYPE STRING,
INTCA TYPE STRING,
LANDK TYPE STRING,
ISOCD TYPE STRING,
KURST TYPE STRING,
XEGLD TYPE STRING,
XTXIT TYPE STRING,
INTVERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK00T_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_FKK00T_STR-TAX_COUNTRY sy-vline 
WA_FKK00T_STR-BUKRS sy-vline 
WA_FKK00T_STR-XJURI sy-vline 
WA_FKK00T_STR-XEXTN sy-vline 
WA_FKK00T_STR-KALSM sy-vline 
WA_FKK00T_STR-LENG1 sy-vline 
WA_FKK00T_STR-LENG2 sy-vline 
WA_FKK00T_STR-LENG3 sy-vline 
WA_FKK00T_STR-LENG4 sy-vline 
WA_FKK00T_STR-ISOHW sy-vline 
WA_FKK00T_STR-ISOH2 sy-vline 
WA_FKK00T_STR-ISOH3 sy-vline 
WA_FKK00T_STR-INTCA sy-vline 
WA_FKK00T_STR-LANDK sy-vline 
WA_FKK00T_STR-ISOCD sy-vline 
WA_FKK00T_STR-KURST sy-vline 
WA_FKK00T_STR-XEGLD sy-vline 
WA_FKK00T_STR-XTXIT sy-vline 
WA_FKK00T_STR-INTVERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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