ABAP Select data from SAP table FKKCOLLITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKCOLLITEM
*  INTO TABLE @DATA(IT_FKKCOLLITEM2).
*--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_FKKCOLLITEM INDEX 1 INTO DATA(WA_FKKCOLLITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKCOLLITEM>-MANDT = 1.
<FKKCOLLITEM>-INKGP = 1.
<FKKCOLLITEM>-COLLITEM_ID = 1.
<FKKCOLLITEM>-COLLITEM_LV = 1.
<FKKCOLLITEM>-TSPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKCOLLITEM-GPART, sy-vline,
  WA_FKKCOLLITEM-COLLITEM_ID_PAR, sy-vline,
  WA_FKKCOLLITEM-COLLITEM_LV_PAR, sy-vline,
  WA_FKKCOLLITEM-WAERS, sy-vline,
  WA_FKKCOLLITEM-AINKB, sy-vline,
  WA_FKKCOLLITEM-AGDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKCOLLITEM 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_FKKCOLLITEM 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_FKKCOLLITEM INTO WA_FKKCOLLITEM.


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

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

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

*Conversion exit ALPHA, internal->external for field COLLITEM_LV_PAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLITEM-COLLITEM_LV_PAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLITEM-COLLITEM_LV_PAR.
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_FKKCOLLITEM_STR, 
MANDT TYPE STRING,
INKGP TYPE STRING,
COLLITEM_ID TYPE STRING,
COLLITEM_LV TYPE STRING,
TSPNR TYPE STRING,
GPART TYPE STRING,
COLLITEM_ID_PAR TYPE STRING,
COLLITEM_LV_PAR TYPE STRING,
WAERS TYPE STRING,
AINKB TYPE STRING,
AGDAT TYPE STRING,
RINKB TYPE STRING,
RCDAT TYPE STRING,
COLLITEM_TP TYPE STRING,
COLLITEM_ST TYPE STRING,
VALUT TYPE STRING,
NINKB TYPE STRING,
INTBT TYPE STRING,
CHARB TYPE STRING,
TXTKM TYPE STRING,
PRCST TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
SDDAT TYPE STRING,
RVDAT TYPE STRING,
XIGUID TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
AENAM TYPE STRING,
ACPDT TYPE STRING,
ACPTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKCOLLITEM_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_FKKCOLLITEM_STR-MANDT sy-vline 
WA_FKKCOLLITEM_STR-INKGP sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_ID sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_LV sy-vline 
WA_FKKCOLLITEM_STR-TSPNR sy-vline 
WA_FKKCOLLITEM_STR-GPART sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_ID_PAR sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_LV_PAR sy-vline 
WA_FKKCOLLITEM_STR-WAERS sy-vline 
WA_FKKCOLLITEM_STR-AINKB sy-vline 
WA_FKKCOLLITEM_STR-AGDAT sy-vline 
WA_FKKCOLLITEM_STR-RINKB sy-vline 
WA_FKKCOLLITEM_STR-RCDAT sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_TP sy-vline 
WA_FKKCOLLITEM_STR-COLLITEM_ST sy-vline 
WA_FKKCOLLITEM_STR-VALUT sy-vline 
WA_FKKCOLLITEM_STR-NINKB sy-vline 
WA_FKKCOLLITEM_STR-INTBT sy-vline 
WA_FKKCOLLITEM_STR-CHARB sy-vline 
WA_FKKCOLLITEM_STR-TXTKM sy-vline 
WA_FKKCOLLITEM_STR-PRCST sy-vline 
WA_FKKCOLLITEM_STR-LAUFD sy-vline 
WA_FKKCOLLITEM_STR-LAUFI sy-vline 
WA_FKKCOLLITEM_STR-SDDAT sy-vline 
WA_FKKCOLLITEM_STR-RVDAT sy-vline 
WA_FKKCOLLITEM_STR-XIGUID sy-vline 
WA_FKKCOLLITEM_STR-MSGTY sy-vline 
WA_FKKCOLLITEM_STR-MSGID sy-vline 
WA_FKKCOLLITEM_STR-MSGNO sy-vline 
WA_FKKCOLLITEM_STR-MSGV1 sy-vline 
WA_FKKCOLLITEM_STR-MSGV2 sy-vline 
WA_FKKCOLLITEM_STR-MSGV3 sy-vline 
WA_FKKCOLLITEM_STR-MSGV4 sy-vline 
WA_FKKCOLLITEM_STR-AENAM sy-vline 
WA_FKKCOLLITEM_STR-ACPDT sy-vline 
WA_FKKCOLLITEM_STR-ACPTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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