ABAP Select data from SAP table J_1BNFEPARKDOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1BNFEPARKDOC 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 J_1BNFEPARKDOC. 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 J_1BNFEPARKDOC 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_J_1BNFEPARKDOC TYPE STANDARD TABLE OF J_1BNFEPARKDOC,
      WA_J_1BNFEPARKDOC TYPE J_1BNFEPARKDOC,
      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: <J_1BNFEPARKDOC> TYPE J_1BNFEPARKDOC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1BNFEPARKDOC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1BNFEPARKDOC
  INTO TABLE IT_J_1BNFEPARKDOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1BNFEPARKDOC
*  INTO TABLE @DATA(IT_J_1BNFEPARKDOC2).
*--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_J_1BNFEPARKDOC INDEX 1 INTO DATA(WA_J_1BNFEPARKDOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1BNFEPARKDOC ASSIGNING <J_1BNFEPARKDOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1BNFEPARKDOC>-MANDT = 1.
<J_1BNFEPARKDOC>-REGIO = 1.
<J_1BNFEPARKDOC>-NFYEAR = 1.
<J_1BNFEPARKDOC>-NFMONTH = 1.
<J_1BNFEPARKDOC>-STCD1 = 1.

ENDLOOP.

LOOP AT IT_J_1BNFEPARKDOC INTO WA_J_1BNFEPARKDOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1BNFEPARKDOC-MODEL, sy-vline,
  WA_J_1BNFEPARKDOC-SERIE, sy-vline,
  WA_J_1BNFEPARKDOC-NFNUM9, sy-vline,
  WA_J_1BNFEPARKDOC-DOCNUM9, sy-vline,
  WA_J_1BNFEPARKDOC-CDV, sy-vline,
  WA_J_1BNFEPARKDOC-BELNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1BNFEPARKDOC 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_J_1BNFEPARKDOC 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_J_1BNFEPARKDOC INTO WA_J_1BNFEPARKDOC.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFEPARKDOC-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFEPARKDOC-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFEPARKDOC-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFEPARKDOC-GJAHR.
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_J_1BNFEPARKDOC_STR, 
MANDT TYPE STRING,
REGIO TYPE STRING,
NFYEAR TYPE STRING,
NFMONTH TYPE STRING,
STCD1 TYPE STRING,
MODEL TYPE STRING,
SERIE TYPE STRING,
NFNUM9 TYPE STRING,
DOCNUM9 TYPE STRING,
CDV TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
AMNT TYPE STRING,
XBLNR TYPE STRING,
XMLGOVVERS TYPE STRING,
AUTHCODE TYPE STRING,
AUTHDATE TYPE STRING,
AUTHTIME TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
CRENAM TYPE STRING,
RBSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1BNFEPARKDOC_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_J_1BNFEPARKDOC_STR-MANDT sy-vline 
WA_J_1BNFEPARKDOC_STR-REGIO sy-vline 
WA_J_1BNFEPARKDOC_STR-NFYEAR sy-vline 
WA_J_1BNFEPARKDOC_STR-NFMONTH sy-vline 
WA_J_1BNFEPARKDOC_STR-STCD1 sy-vline 
WA_J_1BNFEPARKDOC_STR-MODEL sy-vline 
WA_J_1BNFEPARKDOC_STR-SERIE sy-vline 
WA_J_1BNFEPARKDOC_STR-NFNUM9 sy-vline 
WA_J_1BNFEPARKDOC_STR-DOCNUM9 sy-vline 
WA_J_1BNFEPARKDOC_STR-CDV sy-vline 
WA_J_1BNFEPARKDOC_STR-BELNR sy-vline 
WA_J_1BNFEPARKDOC_STR-GJAHR sy-vline 
WA_J_1BNFEPARKDOC_STR-BLDAT sy-vline 
WA_J_1BNFEPARKDOC_STR-BUDAT sy-vline 
WA_J_1BNFEPARKDOC_STR-AMNT sy-vline 
WA_J_1BNFEPARKDOC_STR-XBLNR sy-vline 
WA_J_1BNFEPARKDOC_STR-XMLGOVVERS sy-vline 
WA_J_1BNFEPARKDOC_STR-AUTHCODE sy-vline 
WA_J_1BNFEPARKDOC_STR-AUTHDATE sy-vline 
WA_J_1BNFEPARKDOC_STR-AUTHTIME sy-vline 
WA_J_1BNFEPARKDOC_STR-CREDAT sy-vline 
WA_J_1BNFEPARKDOC_STR-CRETIM sy-vline 
WA_J_1BNFEPARKDOC_STR-CRENAM sy-vline 
WA_J_1BNFEPARKDOC_STR-RBSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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