ABAP Select data from SAP table IDCN_ZJFSTR_SIMDOC_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCN_ZJFSTR_SIMDOC_ITEM
*  INTO TABLE @DATA(IT_IDCN_ZJFSTR_SIMDOC_ITEM2).
*--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_IDCN_ZJFSTR_SIMDOC_ITEM INDEX 1 INTO DATA(WA_IDCN_ZJFSTR_SIMDOC_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCN_ZJFSTR_SIMDOC_ITEM>-SAKNR = 1.
<IDCN_ZJFSTR_SIMDOC_ITEM>-BELNR = 1.
<IDCN_ZJFSTR_SIMDOC_ITEM>-BUDAT = 1.
<IDCN_ZJFSTR_SIMDOC_ITEM>-BLDAT = 1.
<IDCN_ZJFSTR_SIMDOC_ITEM>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCN_ZJFSTR_SIMDOC_ITEM-WAERS, sy-vline,
  WA_IDCN_ZJFSTR_SIMDOC_ITEM-BUKRS, sy-vline,
  WA_IDCN_ZJFSTR_SIMDOC_ITEM-BKTXT, sy-vline,
  WA_IDCN_ZJFSTR_SIMDOC_ITEM-XBLNR, sy-vline,
  WA_IDCN_ZJFSTR_SIMDOC_ITEM-DEBIT_BUZEI, sy-vline,
  WA_IDCN_ZJFSTR_SIMDOC_ITEM-DEBIT_SHKZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCN_ZJFSTR_SIMDOC_ITEM 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_IDCN_ZJFSTR_SIMDOC_ITEM 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_IDCN_ZJFSTR_SIMDOC_ITEM INTO WA_IDCN_ZJFSTR_SIMDOC_ITEM.


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

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

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

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

*Conversion exit AU132, internal->external for field DEBIT_WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_SIMDOC_ITEM-DEBIT_WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_SIMDOC_ITEM-DEBIT_WRBTR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AU132, internal->external for field CREDIT_WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_SIMDOC_ITEM-CREDIT_WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_SIMDOC_ITEM-CREDIT_WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CREDIT_KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_SIMDOC_ITEM-CREDIT_KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_SIMDOC_ITEM-CREDIT_KOSTL.
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_IDCN_ZJFSTR_SIMDOC_ITEM_STR, 
SAKNR TYPE STRING,
BELNR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BLART TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
BKTXT TYPE STRING,
XBLNR TYPE STRING,
DEBIT_BUZEI TYPE STRING,
DEBIT_SHKZG TYPE STRING,
DEBIT_BSCHL TYPE STRING,
DEBIT_HKONT TYPE STRING,
DEBIT_GSBER TYPE STRING,
DEBIT_PRCTR TYPE STRING,
DEBIT_UMSKZ TYPE STRING,
DEBIT_BWASL TYPE STRING,
DEBIT_WRBTR TYPE STRING,
DEBIT_KOSTL TYPE STRING,
DEBIT_SGTXT TYPE STRING,
DEBIT_ZUONR TYPE STRING,
DEBIT_TXT20_SKAT TYPE STRING,
CREDIT_BUZEI TYPE STRING,
CREDIT_SHKZG TYPE STRING,
CREDIT_BSCHL TYPE STRING,
CREDIT_HKONT TYPE STRING,
CREDIT_GSBER TYPE STRING,
CREDIT_PRCTR TYPE STRING,
CREDIT_UMSKZ TYPE STRING,
CREDIT_BWASL TYPE STRING,
CREDIT_WRBTR TYPE STRING,
CREDIT_KOSTL TYPE STRING,
CREDIT_SGTXT TYPE STRING,
CREDIT_ZUONR TYPE STRING,
CREDIT_TXT20_SKAT TYPE STRING,
LIGHTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCN_ZJFSTR_SIMDOC_ITEM_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_IDCN_ZJFSTR_SIMDOC_ITEM_STR-SAKNR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BELNR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BUDAT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BLDAT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BLART sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-WAERS sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BUKRS sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-BKTXT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-XBLNR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_BUZEI sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_SHKZG sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_BSCHL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_HKONT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_GSBER sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_PRCTR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_UMSKZ sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_BWASL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_WRBTR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_KOSTL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_SGTXT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_ZUONR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-DEBIT_TXT20_SKAT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_BUZEI sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_SHKZG sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_BSCHL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_HKONT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_GSBER sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_PRCTR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_UMSKZ sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_BWASL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_WRBTR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_KOSTL sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_SGTXT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_ZUONR sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-CREDIT_TXT20_SKAT sy-vline 
WA_IDCN_ZJFSTR_SIMDOC_ITEM_STR-LIGHTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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