ABAP Select data from SAP table FRE_IF_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FRE_IF_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 FRE_IF_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 FRE_IF_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_FRE_IF_ITEM TYPE STANDARD TABLE OF FRE_IF_ITEM,
      WA_FRE_IF_ITEM TYPE FRE_IF_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: <FRE_IF_ITEM> TYPE FRE_IF_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRE_IF_ITEM
*  INTO TABLE @DATA(IT_FRE_IF_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_FRE_IF_ITEM INDEX 1 INTO DATA(WA_FRE_IF_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRE_IF_ITEM>-MANDT = 1.
<FRE_IF_ITEM>-OPHNR = 1.
<FRE_IF_ITEM>-ITMNR = 1.
<FRE_IF_ITEM>-SCHEDNR = 1.
<FRE_IF_ITEM>-PROCFLAG_IF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRE_IF_ITEM-ORDNO, sy-vline,
  WA_FRE_IF_ITEM-ITMNO, sy-vline,
  WA_FRE_IF_ITEM-MATNR, sy-vline,
  WA_FRE_IF_ITEM-SUBRANGE, sy-vline,
  WA_FRE_IF_ITEM-MATKL, sy-vline,
  WA_FRE_IF_ITEM-LOCNOTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRE_IF_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_FRE_IF_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_FRE_IF_ITEM INTO WA_FRE_IF_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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FRE_IF_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRE_IF_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field GI_QUANT_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FRE_IF_ITEM-GI_QUANT_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRE_IF_ITEM-GI_QUANT_UNIT.
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_FRE_IF_ITEM_STR, 
MANDT TYPE STRING,
OPHNR TYPE STRING,
ITMNR TYPE STRING,
SCHEDNR TYPE STRING,
PROCFLAG_IF TYPE STRING,
ORDNO TYPE STRING,
ITMNO TYPE STRING,
MATNR TYPE STRING,
SUBRANGE TYPE STRING,
MATKL TYPE STRING,
LOCNOTO TYPE STRING,
LOCNOFR TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
NETQUAN TYPE STRING,
NETUNIT TYPE STRING,
DELIVQUAN TYPE STRING,
DELIVUNIT TYPE STRING,
ORDERTST TYPE STRING,
DELIVTST TYPE STRING,
TSTTO TYPE STRING,
TSTFR TYPE STRING,
ITMPVAL TYPE STRING,
ITMCURR TYPE STRING,
RELIND TYPE STRING,
STATVAL TYPE STRING,
RETURNID TYPE STRING,
ACCOMPLISH TYPE STRING,
UNIT_ISO TYPE STRING,
NETUNIT_ISO TYPE STRING,
DELIVUNIT_ISO TYPE STRING,
ITMCURR_ISO TYPE STRING,
FUNCTION TYPE STRING,
SENDER TYPE STRING,
PURCHASE_ORG TYPE STRING,
PURCHASE_GRP TYPE STRING,
PROCESSING_METH TYPE STRING,
CONSIGNMENT TYPE STRING,
LOCNOTOTYPE TYPE STRING,
LOCNOFRTYPE TYPE STRING,
CONTRACT_HDR TYPE STRING,
CONTRACT_ITM TYPE STRING,
MATNO TYPE STRING,
GI_QUANTITY TYPE STRING,
GI_QUANT_UNIT TYPE STRING,
GI_QUAN_UNIT_ISO TYPE STRING,
GI_COMPLETED TYPE STRING,
MD_INCOMPLETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRE_IF_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_FRE_IF_ITEM_STR-MANDT sy-vline 
WA_FRE_IF_ITEM_STR-OPHNR sy-vline 
WA_FRE_IF_ITEM_STR-ITMNR sy-vline 
WA_FRE_IF_ITEM_STR-SCHEDNR sy-vline 
WA_FRE_IF_ITEM_STR-PROCFLAG_IF sy-vline 
WA_FRE_IF_ITEM_STR-ORDNO sy-vline 
WA_FRE_IF_ITEM_STR-ITMNO sy-vline 
WA_FRE_IF_ITEM_STR-MATNR sy-vline 
WA_FRE_IF_ITEM_STR-SUBRANGE sy-vline 
WA_FRE_IF_ITEM_STR-MATKL sy-vline 
WA_FRE_IF_ITEM_STR-LOCNOTO sy-vline 
WA_FRE_IF_ITEM_STR-LOCNOFR sy-vline 
WA_FRE_IF_ITEM_STR-QUANTITY sy-vline 
WA_FRE_IF_ITEM_STR-UNIT sy-vline 
WA_FRE_IF_ITEM_STR-NETQUAN sy-vline 
WA_FRE_IF_ITEM_STR-NETUNIT sy-vline 
WA_FRE_IF_ITEM_STR-DELIVQUAN sy-vline 
WA_FRE_IF_ITEM_STR-DELIVUNIT sy-vline 
WA_FRE_IF_ITEM_STR-ORDERTST sy-vline 
WA_FRE_IF_ITEM_STR-DELIVTST sy-vline 
WA_FRE_IF_ITEM_STR-TSTTO sy-vline 
WA_FRE_IF_ITEM_STR-TSTFR sy-vline 
WA_FRE_IF_ITEM_STR-ITMPVAL sy-vline 
WA_FRE_IF_ITEM_STR-ITMCURR sy-vline 
WA_FRE_IF_ITEM_STR-RELIND sy-vline 
WA_FRE_IF_ITEM_STR-STATVAL sy-vline 
WA_FRE_IF_ITEM_STR-RETURNID sy-vline 
WA_FRE_IF_ITEM_STR-ACCOMPLISH sy-vline 
WA_FRE_IF_ITEM_STR-UNIT_ISO sy-vline 
WA_FRE_IF_ITEM_STR-NETUNIT_ISO sy-vline 
WA_FRE_IF_ITEM_STR-DELIVUNIT_ISO sy-vline 
WA_FRE_IF_ITEM_STR-ITMCURR_ISO sy-vline 
WA_FRE_IF_ITEM_STR-FUNCTION sy-vline 
WA_FRE_IF_ITEM_STR-SENDER sy-vline 
WA_FRE_IF_ITEM_STR-PURCHASE_ORG sy-vline 
WA_FRE_IF_ITEM_STR-PURCHASE_GRP sy-vline 
WA_FRE_IF_ITEM_STR-PROCESSING_METH sy-vline 
WA_FRE_IF_ITEM_STR-CONSIGNMENT sy-vline 
WA_FRE_IF_ITEM_STR-LOCNOTOTYPE sy-vline 
WA_FRE_IF_ITEM_STR-LOCNOFRTYPE sy-vline 
WA_FRE_IF_ITEM_STR-CONTRACT_HDR sy-vline 
WA_FRE_IF_ITEM_STR-CONTRACT_ITM sy-vline 
WA_FRE_IF_ITEM_STR-MATNO sy-vline 
WA_FRE_IF_ITEM_STR-GI_QUANTITY sy-vline 
WA_FRE_IF_ITEM_STR-GI_QUANT_UNIT sy-vline 
WA_FRE_IF_ITEM_STR-GI_QUAN_UNIT_ISO sy-vline 
WA_FRE_IF_ITEM_STR-GI_COMPLETED sy-vline 
WA_FRE_IF_ITEM_STR-MD_INCOMPLETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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