ABAP Select data from SAP table IDGT_S_UI_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDGT_S_UI_ITEM
*  INTO TABLE @DATA(IT_IDGT_S_UI_ITEM2).
*--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_IDGT_S_UI_ITEM INDEX 1 INTO DATA(WA_IDGT_S_UI_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDGT_S_UI_ITEM>-REFVBELN = 1.
<IDGT_S_UI_ITEM>-POSNR = 1.
<IDGT_S_UI_ITEM>-GTVBELN = 1.
<IDGT_S_UI_ITEM>-TYPCODE = 1.
<IDGT_S_UI_ITEM>-POS_GTVBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDGT_S_UI_ITEM-POS_TYPCODE, sy-vline,
  WA_IDGT_S_UI_ITEM-VBELN, sy-vline,
  WA_IDGT_S_UI_ITEM-VFPOS, sy-vline,
  WA_IDGT_S_UI_ITEM-NOTE, sy-vline,
  WA_IDGT_S_UI_ITEM-MATNR, sy-vline,
  WA_IDGT_S_UI_ITEM-MAKTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDGT_S_UI_ITEM 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_IDGT_S_UI_ITEM 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_IDGT_S_UI_ITEM INTO WA_IDGT_S_UI_ITEM.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IDGT_S_UI_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDGT_S_UI_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EXCRT, internal->external for field KURRF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IDGT_S_UI_ITEM-KURRF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDGT_S_UI_ITEM-KURRF.
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_IDGT_S_UI_ITEM_STR, 
REFVBELN TYPE STRING,
POSNR TYPE STRING,
GTVBELN TYPE STRING,
TYPCODE TYPE STRING,
POS_GTVBELN TYPE STRING,
POS_TYPCODE TYPE STRING,
VBELN TYPE STRING,
VFPOS TYPE STRING,
NOTE TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
MSPEC TYPE STRING,
MEINS TYPE STRING,
UNITPE TYPE STRING,
FKIMG TYPE STRING,
NETWR TYPE STRING,
DISC TYPE STRING,
DISCTAX TYPE STRING,
TAXAMT TYPE STRING,
TAXRATE TYPE STRING,
TAXCOD TYPE STRING,
UNITPE_S TYPE STRING,
PEMOD TYPE STRING,
CURRENCY TYPE STRING,
AUBEL TYPE STRING,
AUPOS TYPE STRING,
UOMDESC TYPE STRING,
KURRF TYPE STRING,
FWBTR TYPE STRING,
FWAER TYPE STRING,
BUYER_BUSTYP TYPE STRING,
MATL_GROUP TYPE STRING,
MATL_CODE TYPE STRING,
DISCOUNT_FLAG TYPE STRING,
ZEROTAX_FLAG TYPE STRING,
DISCOUNT_NOTE TYPE STRING,
ENTRCOMM_CODE TYPE STRING,
DEDUCTIONS TYPE STRING,
MATL_CAT_NAME TYPE STRING,
CUSTOMFIELD1 TYPE STRING,
CUSTOMFIELD2 TYPE STRING,
GTD_STATUS TYPE STRING,
READ_ONLY_REF TYPE STRING,
GTSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDGT_S_UI_ITEM_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_IDGT_S_UI_ITEM_STR-REFVBELN sy-vline 
WA_IDGT_S_UI_ITEM_STR-POSNR sy-vline 
WA_IDGT_S_UI_ITEM_STR-GTVBELN sy-vline 
WA_IDGT_S_UI_ITEM_STR-TYPCODE sy-vline 
WA_IDGT_S_UI_ITEM_STR-POS_GTVBELN sy-vline 
WA_IDGT_S_UI_ITEM_STR-POS_TYPCODE sy-vline 
WA_IDGT_S_UI_ITEM_STR-VBELN sy-vline 
WA_IDGT_S_UI_ITEM_STR-VFPOS sy-vline 
WA_IDGT_S_UI_ITEM_STR-NOTE sy-vline 
WA_IDGT_S_UI_ITEM_STR-MATNR sy-vline 
WA_IDGT_S_UI_ITEM_STR-MAKTX sy-vline 
WA_IDGT_S_UI_ITEM_STR-MSPEC sy-vline 
WA_IDGT_S_UI_ITEM_STR-MEINS sy-vline 
WA_IDGT_S_UI_ITEM_STR-UNITPE sy-vline 
WA_IDGT_S_UI_ITEM_STR-FKIMG sy-vline 
WA_IDGT_S_UI_ITEM_STR-NETWR sy-vline 
WA_IDGT_S_UI_ITEM_STR-DISC sy-vline 
WA_IDGT_S_UI_ITEM_STR-DISCTAX sy-vline 
WA_IDGT_S_UI_ITEM_STR-TAXAMT sy-vline 
WA_IDGT_S_UI_ITEM_STR-TAXRATE sy-vline 
WA_IDGT_S_UI_ITEM_STR-TAXCOD sy-vline 
WA_IDGT_S_UI_ITEM_STR-UNITPE_S sy-vline 
WA_IDGT_S_UI_ITEM_STR-PEMOD sy-vline 
WA_IDGT_S_UI_ITEM_STR-CURRENCY sy-vline 
WA_IDGT_S_UI_ITEM_STR-AUBEL sy-vline 
WA_IDGT_S_UI_ITEM_STR-AUPOS sy-vline 
WA_IDGT_S_UI_ITEM_STR-UOMDESC sy-vline 
WA_IDGT_S_UI_ITEM_STR-KURRF sy-vline 
WA_IDGT_S_UI_ITEM_STR-FWBTR sy-vline 
WA_IDGT_S_UI_ITEM_STR-FWAER sy-vline 
WA_IDGT_S_UI_ITEM_STR-BUYER_BUSTYP sy-vline 
WA_IDGT_S_UI_ITEM_STR-MATL_GROUP sy-vline 
WA_IDGT_S_UI_ITEM_STR-MATL_CODE sy-vline 
WA_IDGT_S_UI_ITEM_STR-DISCOUNT_FLAG sy-vline 
WA_IDGT_S_UI_ITEM_STR-ZEROTAX_FLAG sy-vline 
WA_IDGT_S_UI_ITEM_STR-DISCOUNT_NOTE sy-vline 
WA_IDGT_S_UI_ITEM_STR-ENTRCOMM_CODE sy-vline 
WA_IDGT_S_UI_ITEM_STR-DEDUCTIONS sy-vline 
WA_IDGT_S_UI_ITEM_STR-MATL_CAT_NAME sy-vline 
WA_IDGT_S_UI_ITEM_STR-CUSTOMFIELD1 sy-vline 
WA_IDGT_S_UI_ITEM_STR-CUSTOMFIELD2 sy-vline 
WA_IDGT_S_UI_ITEM_STR-GTD_STATUS sy-vline 
WA_IDGT_S_UI_ITEM_STR-READ_ONLY_REF sy-vline 
WA_IDGT_S_UI_ITEM_STR-GTSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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