ABAP Select data from SAP table IDGT_S_ITEM_PUB 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_ITEM_PUB 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_ITEM_PUB. 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_ITEM_PUB 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_ITEM_PUB TYPE STANDARD TABLE OF IDGT_S_ITEM_PUB,
      WA_IDGT_S_ITEM_PUB TYPE IDGT_S_ITEM_PUB,
      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_ITEM_PUB> TYPE IDGT_S_ITEM_PUB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDGT_S_ITEM_PUB
*  INTO TABLE @DATA(IT_IDGT_S_ITEM_PUB2).
*--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_ITEM_PUB INDEX 1 INTO DATA(WA_IDGT_S_ITEM_PUB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDGT_S_ITEM_PUB>-SDDOCUMENT = 1.
<IDGT_S_ITEM_PUB>-SDDOCUMENTITEM = 1.
<IDGT_S_ITEM_PUB>-GOLDENTAXDOCUMENT = 1.
<IDGT_S_ITEM_PUB>-GOLDENTAXDOCUMENTITEM = 1.
<IDGT_S_ITEM_PUB>-COMBINEID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDGT_S_ITEM_PUB-PRODUCT, sy-vline,
  WA_IDGT_S_ITEM_PUB-PRODUCTDESCRIPTION, sy-vline,
  WA_IDGT_S_ITEM_PUB-PRODUCTSPECIFICATION, sy-vline,
  WA_IDGT_S_ITEM_PUB-UOM, sy-vline,
  WA_IDGT_S_ITEM_PUB-BILLEDQUANTITY, sy-vline,
  WA_IDGT_S_ITEM_PUB-ITEMNETAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDGT_S_ITEM_PUB 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_ITEM_PUB 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_ITEM_PUB INTO WA_IDGT_S_ITEM_PUB.


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

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

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IDGT_S_ITEM_PUB-EXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDGT_S_ITEM_PUB-EXCHANGERATE.
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_ITEM_PUB_STR, 
SDDOCUMENT TYPE STRING,
SDDOCUMENTITEM TYPE STRING,
GOLDENTAXDOCUMENT TYPE STRING,
GOLDENTAXDOCUMENTITEM TYPE STRING,
COMBINEID TYPE STRING,
PRODUCT TYPE STRING,
PRODUCTDESCRIPTION TYPE STRING,
PRODUCTSPECIFICATION TYPE STRING,
UOM TYPE STRING,
BILLEDQUANTITY TYPE STRING,
ITEMNETAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXRATE TYPE STRING,
PRICEUNIT TYPE STRING,
TAXCATALOG TYPE STRING,
PRICINGMODE TYPE STRING,
DISCOUNTAMOUNT TYPE STRING,
TAXAMOUNTOFDISCOUNTAMOUNT TYPE STRING,
ITEMISSPLIT TYPE STRING,
ITEMISMERGED TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
UOMDESCRIPTION TYPE STRING,
EXCHANGERATE TYPE STRING,
INVOICEITEMAMOUNTINFRGNCRCY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
DOCUMENTKEY1 TYPE STRING,
DOCUMENTKEY2 TYPE STRING,
DOCUMENTKEY3 TYPE STRING,
SOURCEDOCUMENTBUSOBJTYPE TYPE STRING,
MATERIALGROUP TYPE STRING,
TAXCLASSIFICATIONNUMBER TYPE STRING,
ISDISCOUNTITEM TYPE STRING,
ISZEROTAX TYPE STRING,
DISCOUNTNOTE TYPE STRING,
EXTERNALPRODUCT TYPE STRING,
DEDUCTIONAMOUNT TYPE STRING,
TAXCLASSIFICATIONNUMBERDESC TYPE STRING,
MERGEFILED1 TYPE STRING,
MERGEFILED2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDGT_S_ITEM_PUB_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_ITEM_PUB_STR-SDDOCUMENT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-SDDOCUMENTITEM sy-vline 
WA_IDGT_S_ITEM_PUB_STR-GOLDENTAXDOCUMENT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-GOLDENTAXDOCUMENTITEM sy-vline 
WA_IDGT_S_ITEM_PUB_STR-COMBINEID sy-vline 
WA_IDGT_S_ITEM_PUB_STR-PRODUCT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-PRODUCTDESCRIPTION sy-vline 
WA_IDGT_S_ITEM_PUB_STR-PRODUCTSPECIFICATION sy-vline 
WA_IDGT_S_ITEM_PUB_STR-UOM sy-vline 
WA_IDGT_S_ITEM_PUB_STR-BILLEDQUANTITY sy-vline 
WA_IDGT_S_ITEM_PUB_STR-ITEMNETAMOUNT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXAMOUNT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXRATE sy-vline 
WA_IDGT_S_ITEM_PUB_STR-PRICEUNIT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXCATALOG sy-vline 
WA_IDGT_S_ITEM_PUB_STR-PRICINGMODE sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DISCOUNTAMOUNT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXAMOUNTOFDISCOUNTAMOUNT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-ITEMISSPLIT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-ITEMISMERGED sy-vline 
WA_IDGT_S_ITEM_PUB_STR-SALESORDER sy-vline 
WA_IDGT_S_ITEM_PUB_STR-SALESORDERITEM sy-vline 
WA_IDGT_S_ITEM_PUB_STR-UOMDESCRIPTION sy-vline 
WA_IDGT_S_ITEM_PUB_STR-EXCHANGERATE sy-vline 
WA_IDGT_S_ITEM_PUB_STR-INVOICEITEMAMOUNTINFRGNCRCY sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DOCUMENTCURRENCY sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DOCUMENTKEY1 sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DOCUMENTKEY2 sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DOCUMENTKEY3 sy-vline 
WA_IDGT_S_ITEM_PUB_STR-SOURCEDOCUMENTBUSOBJTYPE sy-vline 
WA_IDGT_S_ITEM_PUB_STR-MATERIALGROUP sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXCLASSIFICATIONNUMBER sy-vline 
WA_IDGT_S_ITEM_PUB_STR-ISDISCOUNTITEM sy-vline 
WA_IDGT_S_ITEM_PUB_STR-ISZEROTAX sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DISCOUNTNOTE sy-vline 
WA_IDGT_S_ITEM_PUB_STR-EXTERNALPRODUCT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-DEDUCTIONAMOUNT sy-vline 
WA_IDGT_S_ITEM_PUB_STR-TAXCLASSIFICATIONNUMBERDESC sy-vline 
WA_IDGT_S_ITEM_PUB_STR-MERGEFILED1 sy-vline 
WA_IDGT_S_ITEM_PUB_STR-MERGEFILED2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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