ABAP Select data from SAP table PCNCUSTACCTBAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNCUSTACCTBAL
*  INTO TABLE @DATA(IT_PCNCUSTACCTBAL2).
*--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_PCNCUSTACCTBAL INDEX 1 INTO DATA(WA_PCNCUSTACCTBAL2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNCUSTACCTBAL-GLACCOUNT, sy-vline,
  WA_PCNCUSTACCTBAL-ALTERNATIVEGLACCOUNT, sy-vline,
  WA_PCNCUSTACCTBAL-BUSINESSPARTNER, sy-vline,
  WA_PCNCUSTACCTBAL-CUSTOMER, sy-vline,
  WA_PCNCUSTACCTBAL-SUPPLIER, sy-vline,
  WA_PCNCUSTACCTBAL-DISPLAYCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCNCUSTACCTBAL 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_PCNCUSTACCTBAL 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_PCNCUSTACCTBAL INTO WA_PCNCUSTACCTBAL.


*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_PCNCUSTACCTBAL-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTACCTBAL-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCNCUSTACCTBAL-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTACCTBAL-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_PCNCUSTACCTBAL_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
FISCALPERIOD TYPE STRING,
FISCALYEARPERIOD TYPE STRING,
GLACCOUNT TYPE STRING,
ALTERNATIVEGLACCOUNT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
CUSTOMERNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
CUSTOMERACCOUNTGROUP TYPE STRING,
CUSTOMERVATREGISTRATION TYPE STRING,
CUSTOMERCOUNTRY TYPE STRING,
CUSTOMERCITYNAME TYPE STRING,
CUSTOMERREGION TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
CUSTBALALTVGLACCOUNTINFO 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_PCNCUSTACCTBAL_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_PCNCUSTACCTBAL_STR-MANDT sy-vline 
WA_PCNCUSTACCTBAL_STR-COMPANYCODE sy-vline 
WA_PCNCUSTACCTBAL_STR-FISCALYEAR sy-vline 
WA_PCNCUSTACCTBAL_STR-FISCALPERIOD sy-vline 
WA_PCNCUSTACCTBAL_STR-FISCALYEARPERIOD sy-vline 
WA_PCNCUSTACCTBAL_STR-GLACCOUNT sy-vline 
WA_PCNCUSTACCTBAL_STR-ALTERNATIVEGLACCOUNT sy-vline 
WA_PCNCUSTACCTBAL_STR-BUSINESSPARTNER sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMER sy-vline 
WA_PCNCUSTACCTBAL_STR-SUPPLIER sy-vline 
WA_PCNCUSTACCTBAL_STR-DISPLAYCURRENCY sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERNAME sy-vline 
WA_PCNCUSTACCTBAL_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_PCNCUSTACCTBAL_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERACCOUNTGROUP sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERVATREGISTRATION sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERCOUNTRY sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERCITYNAME sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTOMERREGION sy-vline 
WA_PCNCUSTACCTBAL_STR-BUSINESSPARTNERNAME sy-vline 
WA_PCNCUSTACCTBAL_STR-CUSTBALALTVGLACCOUNTINFO sy-vline 
WA_PCNCUSTACCTBAL_STR-BALCARFWDAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_STR-STARTINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_STR-ENDINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_STR-DEBITAMOUNTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_STR-CREDITAMOUNTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_STR-YTDDEBITAMTINDSPCRCY sy-vline 
WA_PCNCUSTACCTBAL_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.