ABAP Select data from SAP table PCREXPFI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCREXPFI
*  INTO TABLE @DATA(IT_PCREXPFI2).
*--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_PCREXPFI INDEX 1 INTO DATA(WA_PCREXPFI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCREXPFI>-MANDT = 1.
<PCREXPFI>-BUSINESSPARTNER = 1.
<PCREXPFI>-CREDITSEGMENT = 1.
<PCREXPFI>-XBSEG = 1.
<PCREXPFI>-CREDITCONTROLAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCREXPFI-CUSTOMER, sy-vline,
  WA_PCREXPFI-ACCOUNTINGDOCUMENT, sy-vline,
  WA_PCREXPFI-FISCALYEAR, sy-vline,
  WA_PCREXPFI-SPECIALGLCODE, sy-vline,
  WA_PCREXPFI-CREDITLIMITISCHECKED, sy-vline,
  WA_PCREXPFI-CREDITEXPOSURECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCREXPFI 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_PCREXPFI 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_PCREXPFI INTO WA_PCREXPFI.


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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PCREXPFI-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCREXPFI-FISCALYEAR.
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_PCREXPFI_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CREDITSEGMENT TYPE STRING,
XBSEG TYPE STRING,
CREDITCONTROLAREA TYPE STRING,
CUSTOMER TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
SPECIALGLCODE TYPE STRING,
CREDITLIMITISCHECKED TYPE STRING,
CREDITEXPOSURECATEGORY TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CREDITSEGMENTCURRENCY TYPE STRING,
CREDITEXPOSURE TYPE STRING,
HEDGEDEXPOSURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCREXPFI_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_PCREXPFI_STR-MANDT sy-vline 
WA_PCREXPFI_STR-BUSINESSPARTNER sy-vline 
WA_PCREXPFI_STR-CREDITSEGMENT sy-vline 
WA_PCREXPFI_STR-XBSEG sy-vline 
WA_PCREXPFI_STR-CREDITCONTROLAREA sy-vline 
WA_PCREXPFI_STR-CUSTOMER sy-vline 
WA_PCREXPFI_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PCREXPFI_STR-FISCALYEAR sy-vline 
WA_PCREXPFI_STR-SPECIALGLCODE sy-vline 
WA_PCREXPFI_STR-CREDITLIMITISCHECKED sy-vline 
WA_PCREXPFI_STR-CREDITEXPOSURECATEGORY sy-vline 
WA_PCREXPFI_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_PCREXPFI_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCREXPFI_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCREXPFI_STR-CREDITSEGMENTCURRENCY sy-vline 
WA_PCREXPFI_STR-CREDITEXPOSURE sy-vline 
WA_PCREXPFI_STR-HEDGEDEXPOSURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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