ABAP Select data from SAP table PITEMCOMM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PITEMCOMM
*  INTO TABLE @DATA(IT_PITEMCOMM2).
*--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_PITEMCOMM INDEX 1 INTO DATA(WA_PITEMCOMM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PITEMCOMM>-MANDT = 1.
<PITEMCOMM>-TRADINGCONTRACTNUMBER = 1.
<PITEMCOMM>-TRADINGCONTRACTITEM = 1.
<PITEMCOMM>-SIDE = 1.
<PITEMCOMM>-TRDGCONTRCOMMODITYSUBITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PITEMCOMM-ACMPRICINGCANCELLATIONQUANTITY, sy-vline,
  WA_PITEMCOMM-TRDGCONTRACTITEMUNITOFMEASURE, sy-vline,
  WA_PITEMCOMM-TRDGCONTRCREDITSALESFROMDATE, sy-vline,
  WA_PITEMCOMM-TRDGCONTRACTCREDITSALESTODATE, sy-vline,
  WA_PITEMCOMM-ACMTRDGCONTRFUTUREATTRIB, sy-vline,
  WA_PITEMCOMM-ACMCOMMODITYUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PITEMCOMM 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_PITEMCOMM 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_PITEMCOMM INTO WA_PITEMCOMM.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CUSTOMERNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PITEMCOMM-CUSTOMERNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PITEMCOMM-CUSTOMERNUM.
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_PITEMCOMM_STR, 
MANDT TYPE STRING,
TRADINGCONTRACTNUMBER TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
SIDE TYPE STRING,
TRDGCONTRCOMMODITYSUBITEM TYPE STRING,
ACMPRICINGCANCELLATIONQUANTITY TYPE STRING,
TRDGCONTRACTITEMUNITOFMEASURE TYPE STRING,
TRDGCONTRCREDITSALESFROMDATE TYPE STRING,
TRDGCONTRACTCREDITSALESTODATE TYPE STRING,
ACMTRDGCONTRFUTUREATTRIB TYPE STRING,
ACMCOMMODITYUUID TYPE STRING,
TRADINGCONTRACTCREATEDBY TYPE STRING,
ACMTRDGCONTRCREATEDONDATE TYPE STRING,
TIMEOFCREATION TYPE STRING,
TRADINGCONTRACTCHANGEDBY TYPE STRING,
TRADINGCONTRACTCHANGEDONDATE TYPE STRING,
LASTCHANGETIME TYPE STRING,
ACMCMMDTYSUBITMCLOSED TYPE STRING,
ACMCMMDTYITMCAT TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
ACMTRDGCONTRASSGMTRLVT TYPE STRING,
TRADINGCONTRACTITEMCATEGORY TYPE STRING,
CONTRACTMATERIAL TYPE STRING,
BASEUNITOFMEASURE TYPE STRING,
ACMSETTLEMENTDOCREFERENCEPARTY TYPE STRING,
CUSTOMERNUM TYPE STRING,
BATCH TYPE STRING,
ACMCMMDTYITMEXTIDFR TYPE STRING,
ACMCMMDTYITMPRPTY TYPE STRING,
DATAAGINGOBJECT TYPE STRING,
ACMDUMMYSUBACCOUNTEXTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PITEMCOMM_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_PITEMCOMM_STR-MANDT sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTNUMBER sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTITEM sy-vline 
WA_PITEMCOMM_STR-SIDE sy-vline 
WA_PITEMCOMM_STR-TRDGCONTRCOMMODITYSUBITEM sy-vline 
WA_PITEMCOMM_STR-ACMPRICINGCANCELLATIONQUANTITY sy-vline 
WA_PITEMCOMM_STR-TRDGCONTRACTITEMUNITOFMEASURE sy-vline 
WA_PITEMCOMM_STR-TRDGCONTRCREDITSALESFROMDATE sy-vline 
WA_PITEMCOMM_STR-TRDGCONTRACTCREDITSALESTODATE sy-vline 
WA_PITEMCOMM_STR-ACMTRDGCONTRFUTUREATTRIB sy-vline 
WA_PITEMCOMM_STR-ACMCOMMODITYUUID sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTCREATEDBY sy-vline 
WA_PITEMCOMM_STR-ACMTRDGCONTRCREATEDONDATE sy-vline 
WA_PITEMCOMM_STR-TIMEOFCREATION sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTCHANGEDBY sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTCHANGEDONDATE sy-vline 
WA_PITEMCOMM_STR-LASTCHANGETIME sy-vline 
WA_PITEMCOMM_STR-ACMCMMDTYSUBITMCLOSED sy-vline 
WA_PITEMCOMM_STR-ACMCMMDTYITMCAT sy-vline 
WA_PITEMCOMM_STR-NUMERATOR sy-vline 
WA_PITEMCOMM_STR-DENOMINATOR sy-vline 
WA_PITEMCOMM_STR-ACMTRDGCONTRASSGMTRLVT sy-vline 
WA_PITEMCOMM_STR-TRADINGCONTRACTITEMCATEGORY sy-vline 
WA_PITEMCOMM_STR-CONTRACTMATERIAL sy-vline 
WA_PITEMCOMM_STR-BASEUNITOFMEASURE sy-vline 
WA_PITEMCOMM_STR-ACMSETTLEMENTDOCREFERENCEPARTY sy-vline 
WA_PITEMCOMM_STR-CUSTOMERNUM sy-vline 
WA_PITEMCOMM_STR-BATCH sy-vline 
WA_PITEMCOMM_STR-ACMCMMDTYITMEXTIDFR sy-vline 
WA_PITEMCOMM_STR-ACMCMMDTYITMPRPTY sy-vline 
WA_PITEMCOMM_STR-DATAAGINGOBJECT sy-vline 
WA_PITEMCOMM_STR-ACMDUMMYSUBACCOUNTEXTN sy-vline      INTO ld_text SEPARATED BY SPACE.

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