ABAP Select data from SAP table EIV_GTD_ITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EIV_GTD_ITM
*  INTO TABLE @DATA(IT_EIV_GTD_ITM2).
*--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_EIV_GTD_ITM INDEX 1 INTO DATA(WA_EIV_GTD_ITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EIV_GTD_ITM>-MANDT = 1.
<EIV_GTD_ITM>-GTD_ITEM_UUID = 1.
<EIV_GTD_ITM>-GTD_HEADER_UUID = 1.
<EIV_GTD_ITM>-GTD_NMBR = 1.
<EIV_GTD_ITM>-GTD_ITEM_NMBR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EIV_GTD_ITM-MATL_NMBR, sy-vline,
  WA_EIV_GTD_ITM-MATL_DESC, sy-vline,
  WA_EIV_GTD_ITM-MATL_SPEC, sy-vline,
  WA_EIV_GTD_ITM-UNIT_OF_MSR, sy-vline,
  WA_EIV_GTD_ITM-BLLD_QTY, sy-vline,
  WA_EIV_GTD_ITM-NET_VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EIV_GTD_ITM 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_EIV_GTD_ITM 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_EIV_GTD_ITM INTO WA_EIV_GTD_ITM.


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

*Conversion exit CUNIT, internal->external for field UNIT_OF_MSR
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EIV_GTD_ITM-UNIT_OF_MSR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EIV_GTD_ITM-UNIT_OF_MSR.
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_EIV_GTD_ITM_STR, 
MANDT TYPE STRING,
GTD_ITEM_UUID TYPE STRING,
GTD_HEADER_UUID TYPE STRING,
GTD_NMBR TYPE STRING,
GTD_ITEM_NMBR TYPE STRING,
MATL_NMBR TYPE STRING,
MATL_DESC TYPE STRING,
MATL_SPEC TYPE STRING,
UNIT_OF_MSR TYPE STRING,
BLLD_QTY TYPE STRING,
NET_VALUE TYPE STRING,
DISC_AMOUNT TYPE STRING,
TAX_CODE TYPE STRING,
UNIT_OF_MSR_DESC TYPE STRING,
TAX_AMOUNT TYPE STRING,
DISC_TAX_AMOUNT TYPE STRING,
UNIT_PRICE 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,END OF T_EKKO_STR.
DATA: WA_EIV_GTD_ITM_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_EIV_GTD_ITM_STR-MANDT sy-vline 
WA_EIV_GTD_ITM_STR-GTD_ITEM_UUID sy-vline 
WA_EIV_GTD_ITM_STR-GTD_HEADER_UUID sy-vline 
WA_EIV_GTD_ITM_STR-GTD_NMBR sy-vline 
WA_EIV_GTD_ITM_STR-GTD_ITEM_NMBR sy-vline 
WA_EIV_GTD_ITM_STR-MATL_NMBR sy-vline 
WA_EIV_GTD_ITM_STR-MATL_DESC sy-vline 
WA_EIV_GTD_ITM_STR-MATL_SPEC sy-vline 
WA_EIV_GTD_ITM_STR-UNIT_OF_MSR sy-vline 
WA_EIV_GTD_ITM_STR-BLLD_QTY sy-vline 
WA_EIV_GTD_ITM_STR-NET_VALUE sy-vline 
WA_EIV_GTD_ITM_STR-DISC_AMOUNT sy-vline 
WA_EIV_GTD_ITM_STR-TAX_CODE sy-vline 
WA_EIV_GTD_ITM_STR-UNIT_OF_MSR_DESC sy-vline 
WA_EIV_GTD_ITM_STR-TAX_AMOUNT sy-vline 
WA_EIV_GTD_ITM_STR-DISC_TAX_AMOUNT sy-vline 
WA_EIV_GTD_ITM_STR-UNIT_PRICE sy-vline 
WA_EIV_GTD_ITM_STR-MATL_GROUP sy-vline 
WA_EIV_GTD_ITM_STR-MATL_CODE sy-vline 
WA_EIV_GTD_ITM_STR-DISCOUNT_FLAG sy-vline 
WA_EIV_GTD_ITM_STR-ZEROTAX_FLAG sy-vline 
WA_EIV_GTD_ITM_STR-DISCOUNT_NOTE sy-vline 
WA_EIV_GTD_ITM_STR-ENTRCOMM_CODE sy-vline 
WA_EIV_GTD_ITM_STR-DEDUCTIONS sy-vline 
WA_EIV_GTD_ITM_STR-MATL_CAT_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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