ABAP Select data from SAP table FKKGLITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKGLITEM
*  INTO TABLE @DATA(IT_FKKGLITEM2).
*--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_FKKGLITEM INDEX 1 INTO DATA(WA_FKKGLITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKGLITEM>-FIKEY = 1.
<FKKGLITEM>-BUKRS = 1.
<FKKGLITEM>-GJAHR = 1.
<FKKGLITEM>-WAERS = 1.
<FKKGLITEM>-HWAER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKGLITEM-BUDAT, sy-vline,
  WA_FKKGLITEM-BLDAT, sy-vline,
  WA_FKKGLITEM-SHKZG, sy-vline,
  WA_FKKGLITEM-HKONT, sy-vline,
  WA_FKKGLITEM-GSBER, sy-vline,
  WA_FKKGLITEM-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKGLITEM 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_FKKGLITEM 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_FKKGLITEM INTO WA_FKKGLITEM.


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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_FKKGLITEM-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKGLITEM-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FKKGLITEM-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKGLITEM-FIPEX.
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_FKKGLITEM_STR, 
FIKEY TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
SHKZG TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
AUFNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
MWSKZ TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
FMTYP TYPE STRING,
XREF1 TYPE STRING,
TABKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKGLITEM_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_FKKGLITEM_STR-FIKEY sy-vline 
WA_FKKGLITEM_STR-BUKRS sy-vline 
WA_FKKGLITEM_STR-GJAHR sy-vline 
WA_FKKGLITEM_STR-WAERS sy-vline 
WA_FKKGLITEM_STR-HWAER sy-vline 
WA_FKKGLITEM_STR-BUDAT sy-vline 
WA_FKKGLITEM_STR-BLDAT sy-vline 
WA_FKKGLITEM_STR-SHKZG sy-vline 
WA_FKKGLITEM_STR-HKONT sy-vline 
WA_FKKGLITEM_STR-GSBER sy-vline 
WA_FKKGLITEM_STR-KOSTL sy-vline 
WA_FKKGLITEM_STR-PRCTR sy-vline 
WA_FKKGLITEM_STR-AUFNR sy-vline 
WA_FKKGLITEM_STR-PS_PSP_PNR sy-vline 
WA_FKKGLITEM_STR-MWSKZ sy-vline 
WA_FKKGLITEM_STR-FIPEX sy-vline 
WA_FKKGLITEM_STR-FISTL sy-vline 
WA_FKKGLITEM_STR-GEBER sy-vline 
WA_FKKGLITEM_STR-FKBER sy-vline 
WA_FKKGLITEM_STR-FMTYP sy-vline 
WA_FKKGLITEM_STR-XREF1 sy-vline 
WA_FKKGLITEM_STR-TABKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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