ABAP Select data from SAP table PCNFSVERSION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNFSVERSION
*  INTO TABLE @DATA(IT_PCNFSVERSION2).
*--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_PCNFSVERSION INDEX 1 INTO DATA(WA_PCNFSVERSION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCNFSVERSION>-MANDT = 1.
<PCNFSVERSION>-FINANCIALSTATEMENTVARIANT = 1.
<PCNFSVERSION>-MAINTENANCELANGUAGE = 1.
<PCNFSVERSION>-CHARTOFACCOUNTS = 1.
<PCNFSVERSION>-GROUPCHARTOFACCOUNTISUSED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNFSVERSION-FUNCTIONALAREAISUSED, sy-vline,
  WA_PCNFSVERSION-FINSTMNTASSETITEM, sy-vline,
  WA_PCNFSVERSION-FINSTMNTLIABILITYITEM, sy-vline,
  WA_PCNFSVERSION-NOTASSGDACCOUNTNODE, sy-vline,
  WA_PCNFSVERSION-FINANCIALSTATEMENTNETLOSSITEM, sy-vline,
  WA_PCNFSVERSION-FINSTATEMENTNETPROFITITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCNFSVERSION 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_PCNFSVERSION 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_PCNFSVERSION INTO WA_PCNFSVERSION.


*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 ISOLA, internal->external for field MAINTENANCELANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PCNFSVERSION-MAINTENANCELANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNFSVERSION-MAINTENANCELANGUAGE.
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_PCNFSVERSION_STR, 
MANDT TYPE STRING,
FINANCIALSTATEMENTVARIANT TYPE STRING,
MAINTENANCELANGUAGE TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
GROUPCHARTOFACCOUNTISUSED TYPE STRING,
FUNCTIONALAREAISUSED TYPE STRING,
FINSTMNTASSETITEM TYPE STRING,
FINSTMNTLIABILITYITEM TYPE STRING,
NOTASSGDACCOUNTNODE TYPE STRING,
FINANCIALSTATEMENTNETLOSSITEM TYPE STRING,
FINSTATEMENTNETPROFITITEM TYPE STRING,
FINSTATEMENTPROFITANDLOSSITEM TYPE STRING,
FINANCIALSTATEMENTNOTESITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCNFSVERSION_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_PCNFSVERSION_STR-MANDT sy-vline 
WA_PCNFSVERSION_STR-FINANCIALSTATEMENTVARIANT sy-vline 
WA_PCNFSVERSION_STR-MAINTENANCELANGUAGE sy-vline 
WA_PCNFSVERSION_STR-CHARTOFACCOUNTS sy-vline 
WA_PCNFSVERSION_STR-GROUPCHARTOFACCOUNTISUSED sy-vline 
WA_PCNFSVERSION_STR-FUNCTIONALAREAISUSED sy-vline 
WA_PCNFSVERSION_STR-FINSTMNTASSETITEM sy-vline 
WA_PCNFSVERSION_STR-FINSTMNTLIABILITYITEM sy-vline 
WA_PCNFSVERSION_STR-NOTASSGDACCOUNTNODE sy-vline 
WA_PCNFSVERSION_STR-FINANCIALSTATEMENTNETLOSSITEM sy-vline 
WA_PCNFSVERSION_STR-FINSTATEMENTNETPROFITITEM sy-vline 
WA_PCNFSVERSION_STR-FINSTATEMENTPROFITANDLOSSITEM sy-vline 
WA_PCNFSVERSION_STR-FINANCIALSTATEMENTNOTESITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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