ABAP Select data from SAP table FKKB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKB1 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 FKKB1. 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 FKKB1 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_FKKB1 TYPE STANDARD TABLE OF FKKB1,
      WA_FKKB1 TYPE FKKB1,
      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: <FKKB1> TYPE FKKB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKKB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKKB1
  INTO TABLE IT_FKKB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKB1
*  INTO TABLE @DATA(IT_FKKB12).
*--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_FKKB1 INDEX 1 INTO DATA(WA_FKKB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKKB1 ASSIGNING <FKKB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKB1>-MARKFIELD = 1.
<FKKB1>-XBLNR = 1.
<FKKB1>-OPORD = 1.
<FKKB1>-OPBEL = 1.
<FKKB1>-HERKF = 1.

ENDLOOP.

LOOP AT IT_FKKB1 INTO WA_FKKB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKB1-STBEL, sy-vline,
  WA_FKKB1-STBELC, sy-vline,
  WA_FKKB1-XREVA, sy-vline,
  WA_FKKB1-XARCH, sy-vline,
  WA_FKKB1-ICONS, sy-vline,
  WA_FKKB1-MTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKB1 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_FKKB1 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_FKKB1 INTO WA_FKKB1.


*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 XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKB1-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKB1-XBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKB1-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKB1-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKB1-STBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKB1-STBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBELC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKB1-STBELC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKB1-STBELC.
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_FKKB1_STR, 
MARKFIELD TYPE STRING,
XBLNR TYPE STRING,
OPORD TYPE STRING,
OPBEL TYPE STRING,
HERKF TYPE STRING,
STBEL TYPE STRING,
STBELC TYPE STRING,
XREVA TYPE STRING,
XARCH TYPE STRING,
ICONS TYPE STRING,
MTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKB1_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_FKKB1_STR-MARKFIELD sy-vline 
WA_FKKB1_STR-XBLNR sy-vline 
WA_FKKB1_STR-OPORD sy-vline 
WA_FKKB1_STR-OPBEL sy-vline 
WA_FKKB1_STR-HERKF sy-vline 
WA_FKKB1_STR-STBEL sy-vline 
WA_FKKB1_STR-STBELC sy-vline 
WA_FKKB1_STR-XREVA sy-vline 
WA_FKKB1_STR-XARCH sy-vline 
WA_FKKB1_STR-ICONS sy-vline 
WA_FKKB1_STR-MTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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