ABAP Select data from SAP table IFW_ITEM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP IFW_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 IFW_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 IFW_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_IFW_ITEM TYPE STANDARD TABLE OF IFW_ITEM,
      WA_IFW_ITEM TYPE IFW_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: <IFW_ITEM> TYPE IFW_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFW_ITEM
*  INTO TABLE @DATA(IT_IFW_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_IFW_ITEM INDEX 1 INTO DATA(WA_IFW_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFW_ITEM>-CLIENT = 1.
<IFW_ITEM>-ROOT_DOC_TYPE = 1.
<IFW_ITEM>-ROOT_DOC = 1.
<IFW_ITEM>-ROOT_DOC_ITEM = 1.
<IFW_ITEM>-INV_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFW_ITEM-INV_NR, sy-vline,
  WA_IFW_ITEM-INV_ITEM, sy-vline,
  WA_IFW_ITEM-INV_CAT, sy-vline,
  WA_IFW_ITEM-BILL_SCEN, sy-vline,
  WA_IFW_ITEM-BILL_BLOCK, sy-vline,
  WA_IFW_ITEM-PAIR_ITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFW_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_IFW_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_IFW_ITEM INTO WA_IFW_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 ROOT_DOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IFW_ITEM-ROOT_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFW_ITEM-ROOT_DOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FX_RATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IFW_ITEM-FX_RATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFW_ITEM-FX_RATE.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IFW_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFW_ITEM-MATNR.
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_IFW_ITEM_STR, 
CLIENT TYPE STRING,
ROOT_DOC_TYPE TYPE STRING,
ROOT_DOC TYPE STRING,
ROOT_DOC_ITEM TYPE STRING,
INV_TYPE TYPE STRING,
INV_NR TYPE STRING,
INV_ITEM TYPE STRING,
INV_CAT TYPE STRING,
BILL_SCEN TYPE STRING,
BILL_BLOCK TYPE STRING,
PAIR_ITEM TYPE STRING,
ITEM_CANCELLED TYPE STRING,
REF_TYPE TYPE STRING,
REF_OBJ TYPE STRING,
NET_VAL TYPE STRING,
TAX_VAL TYPE STRING,
DOC_CUKY TYPE STRING,
FX_RATE TYPE STRING,
QUANTITY TYPE STRING,
MEINS TYPE STRING,
PR_CONDTYPE TYPE STRING,
PR_STATUS TYPE STRING,
PRICE TYPE STRING,
PRCUR TYPE STRING,
PRUNI TYPE STRING,
PRUOM TYPE STRING,
PR_START_DATE TYPE STRING,
PR_END_DATE TYPE STRING,
FX_START_DATE TYPE STRING,
FX_END_DATE TYPE STRING,
PRICE_RD TYPE STRING,
PRCUR_RD TYPE STRING,
PRUNI_RD TYPE STRING,
PRUOM_RD TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
INV_DUE_DATE_PRO TYPE STRING,
INV_DUE_DATE_FIN TYPE STRING,
PAY_DUE_DATE_PRO TYPE STRING,
PAYDD_DET_PRO TYPE STRING,
PAY_DUE_DATE_FIN TYPE STRING,
PAYDD_DET_FIN TYPE STRING,
INVDD_DET_FIN TYPE STRING,
OUTDATED TYPE STRING,
TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFW_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_IFW_ITEM_STR-CLIENT sy-vline 
WA_IFW_ITEM_STR-ROOT_DOC_TYPE sy-vline 
WA_IFW_ITEM_STR-ROOT_DOC sy-vline 
WA_IFW_ITEM_STR-ROOT_DOC_ITEM sy-vline 
WA_IFW_ITEM_STR-INV_TYPE sy-vline 
WA_IFW_ITEM_STR-INV_NR sy-vline 
WA_IFW_ITEM_STR-INV_ITEM sy-vline 
WA_IFW_ITEM_STR-INV_CAT sy-vline 
WA_IFW_ITEM_STR-BILL_SCEN sy-vline 
WA_IFW_ITEM_STR-BILL_BLOCK sy-vline 
WA_IFW_ITEM_STR-PAIR_ITEM sy-vline 
WA_IFW_ITEM_STR-ITEM_CANCELLED sy-vline 
WA_IFW_ITEM_STR-REF_TYPE sy-vline 
WA_IFW_ITEM_STR-REF_OBJ sy-vline 
WA_IFW_ITEM_STR-NET_VAL sy-vline 
WA_IFW_ITEM_STR-TAX_VAL sy-vline 
WA_IFW_ITEM_STR-DOC_CUKY sy-vline 
WA_IFW_ITEM_STR-FX_RATE sy-vline 
WA_IFW_ITEM_STR-QUANTITY sy-vline 
WA_IFW_ITEM_STR-MEINS sy-vline 
WA_IFW_ITEM_STR-PR_CONDTYPE sy-vline 
WA_IFW_ITEM_STR-PR_STATUS sy-vline 
WA_IFW_ITEM_STR-PRICE sy-vline 
WA_IFW_ITEM_STR-PRCUR sy-vline 
WA_IFW_ITEM_STR-PRUNI sy-vline 
WA_IFW_ITEM_STR-PRUOM sy-vline 
WA_IFW_ITEM_STR-PR_START_DATE sy-vline 
WA_IFW_ITEM_STR-PR_END_DATE sy-vline 
WA_IFW_ITEM_STR-FX_START_DATE sy-vline 
WA_IFW_ITEM_STR-FX_END_DATE sy-vline 
WA_IFW_ITEM_STR-PRICE_RD sy-vline 
WA_IFW_ITEM_STR-PRCUR_RD sy-vline 
WA_IFW_ITEM_STR-PRUNI_RD sy-vline 
WA_IFW_ITEM_STR-PRUOM_RD sy-vline 
WA_IFW_ITEM_STR-WERKS sy-vline 
WA_IFW_ITEM_STR-MATNR sy-vline 
WA_IFW_ITEM_STR-INV_DUE_DATE_PRO sy-vline 
WA_IFW_ITEM_STR-INV_DUE_DATE_FIN sy-vline 
WA_IFW_ITEM_STR-PAY_DUE_DATE_PRO sy-vline 
WA_IFW_ITEM_STR-PAYDD_DET_PRO sy-vline 
WA_IFW_ITEM_STR-PAY_DUE_DATE_FIN sy-vline 
WA_IFW_ITEM_STR-PAYDD_DET_FIN sy-vline 
WA_IFW_ITEM_STR-INVDD_DET_FIN sy-vline 
WA_IFW_ITEM_STR-OUTDATED sy-vline 
WA_IFW_ITEM_STR-TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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