ABAP Select data from SAP table FKK_CO_ALV into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_CO_ALV
*  INTO TABLE @DATA(IT_FKK_CO_ALV2).
*--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_FKK_CO_ALV INDEX 1 INTO DATA(WA_FKK_CO_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_CO_ALV>-KOKRS = 1.
<FKK_CO_ALV>-BELNR = 1.
<FKK_CO_ALV>-BUZEI = 1.
<FKK_CO_ALV>-REFBN = 1.
<FKK_CO_ALV>-AWORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_CO_ALV-BUKRS, sy-vline,
  WA_FKK_CO_ALV-GSBER, sy-vline,
  WA_FKK_CO_ALV-SEGMENT, sy-vline,
  WA_FKK_CO_ALV-HKONT, sy-vline,
  WA_FKK_CO_ALV-BUDAT, sy-vline,
  WA_FKK_CO_ALV-BLDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_CO_ALV 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_FKK_CO_ALV 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_FKK_CO_ALV INTO WA_FKK_CO_ALV.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CO_ALV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CO_ALV-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CO_ALV-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CO_ALV-OPBEL.
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_FKK_CO_ALV_STR, 
KOKRS TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
REFBN TYPE STRING,
AWORG TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
HKONT TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
PAOBJNR TYPE STRING,
OBJNR TYPE STRING,
SHKZG TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
AWTYP TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
FIKEY TYPE STRING,
BETRH TYPE STRING,
HWAER TYPE STRING,
BELTP TYPE STRING,
LAYOUT TYPE STRING,
EXCP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_CO_ALV_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_FKK_CO_ALV_STR-KOKRS sy-vline 
WA_FKK_CO_ALV_STR-BELNR sy-vline 
WA_FKK_CO_ALV_STR-BUZEI sy-vline 
WA_FKK_CO_ALV_STR-REFBN sy-vline 
WA_FKK_CO_ALV_STR-AWORG sy-vline 
WA_FKK_CO_ALV_STR-BUKRS sy-vline 
WA_FKK_CO_ALV_STR-GSBER sy-vline 
WA_FKK_CO_ALV_STR-SEGMENT sy-vline 
WA_FKK_CO_ALV_STR-HKONT sy-vline 
WA_FKK_CO_ALV_STR-BUDAT sy-vline 
WA_FKK_CO_ALV_STR-BLDAT sy-vline 
WA_FKK_CO_ALV_STR-GJAHR sy-vline 
WA_FKK_CO_ALV_STR-MONAT sy-vline 
WA_FKK_CO_ALV_STR-PAOBJNR sy-vline 
WA_FKK_CO_ALV_STR-OBJNR sy-vline 
WA_FKK_CO_ALV_STR-SHKZG sy-vline 
WA_FKK_CO_ALV_STR-BETRW sy-vline 
WA_FKK_CO_ALV_STR-WAERS sy-vline 
WA_FKK_CO_ALV_STR-MENGE sy-vline 
WA_FKK_CO_ALV_STR-MEINS sy-vline 
WA_FKK_CO_ALV_STR-AWTYP sy-vline 
WA_FKK_CO_ALV_STR-OPBEL sy-vline 
WA_FKK_CO_ALV_STR-OPUPK sy-vline 
WA_FKK_CO_ALV_STR-FIKEY sy-vline 
WA_FKK_CO_ALV_STR-BETRH sy-vline 
WA_FKK_CO_ALV_STR-HWAER sy-vline 
WA_FKK_CO_ALV_STR-BELTP sy-vline 
WA_FKK_CO_ALV_STR-LAYOUT sy-vline 
WA_FKK_CO_ALV_STR-EXCP sy-vline      INTO ld_text SEPARATED BY SPACE.

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