ABAP Select data from SAP table PCNCUSTACCTBALS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNCUSTACCTBALS
*  INTO TABLE @DATA(IT_PCNCUSTACCTBALS2).
*--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_PCNCUSTACCTBALS INDEX 1 INTO DATA(WA_PCNCUSTACCTBALS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCNCUSTACCTBALS>-MANDT = 1.
<PCNCUSTACCTBALS>-COMPANYCODE = 1.
<PCNCUSTACCTBALS>-FISCALYEAR = 1.
<PCNCUSTACCTBALS>-FISCALPERIOD = 1.
<PCNCUSTACCTBALS>-GLACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNCUSTACCTBALS-ALTERNATIVEGLACCOUNT, sy-vline,
  WA_PCNCUSTACCTBALS-CUSTOMER, sy-vline,
  WA_PCNCUSTACCTBALS-SUPPLIER, sy-vline,
  WA_PCNCUSTACCTBALS-DISPLAYCURRENCY, sy-vline,
  WA_PCNCUSTACCTBALS-BALCARFWDAMTINDSPCRCY, sy-vline,
  WA_PCNCUSTACCTBALS-STARTINGBALAMTINDSPCRCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCNCUSTACCTBALS 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_PCNCUSTACCTBALS 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_PCNCUSTACCTBALS INTO WA_PCNCUSTACCTBALS.


*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 GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PCNCUSTACCTBALS-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTACCTBALS-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCNCUSTACCTBALS-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTACCTBALS-SUPPLIER.
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_PCNCUSTACCTBALS_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
FISCALPERIOD TYPE STRING,
GLACCOUNT TYPE STRING,
ALTERNATIVEGLACCOUNT TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
BALCARFWDAMTINDSPCRCY TYPE STRING,
STARTINGBALAMTINDSPCRCY TYPE STRING,
ENDINGBALAMTINDSPCRCY TYPE STRING,
DEBITAMOUNTINDSPCRCY TYPE STRING,
CREDITAMOUNTINDSPCRCY TYPE STRING,
YTDDEBITAMTINDSPCRCY TYPE STRING,
YTDCRDTAMTINDSPCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCNCUSTACCTBALS_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_PCNCUSTACCTBALS_STR-MANDT sy-vline 
WA_PCNCUSTACCTBALS_STR-COMPANYCODE sy-vline 
WA_PCNCUSTACCTBALS_STR-FISCALYEAR sy-vline 
WA_PCNCUSTACCTBALS_STR-FISCALPERIOD sy-vline 
WA_PCNCUSTACCTBALS_STR-GLACCOUNT sy-vline 
WA_PCNCUSTACCTBALS_STR-ALTERNATIVEGLACCOUNT sy-vline 
WA_PCNCUSTACCTBALS_STR-CUSTOMER sy-vline 
WA_PCNCUSTACCTBALS_STR-SUPPLIER sy-vline 
WA_PCNCUSTACCTBALS_STR-DISPLAYCURRENCY sy-vline 
WA_PCNCUSTACCTBALS_STR-BALCARFWDAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-STARTINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-ENDINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-DEBITAMOUNTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-CREDITAMOUNTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-YTDDEBITAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBALS_STR-YTDCRDTAMTINDSPCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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