ABAP Select data from SAP table EXT_RECON_ITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EXT_RECON_ITEMS
*  INTO TABLE @DATA(IT_EXT_RECON_ITEMS2).
*--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_EXT_RECON_ITEMS INDEX 1 INTO DATA(WA_EXT_RECON_ITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EXT_RECON_ITEMS>-MANDT = 1.
<EXT_RECON_ITEMS>-BUKRS = 1.
<EXT_RECON_ITEMS>-BELNR = 1.
<EXT_RECON_ITEMS>-GJAHR = 1.
<EXT_RECON_ITEMS>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EXT_RECON_ITEMS-TAXRATE, sy-vline,
  WA_EXT_RECON_ITEMS-BASEAMOUNT, sy-vline,
  WA_EXT_RECON_ITEMS-TAXAMOUNT, sy-vline,
  WA_EXT_RECON_ITEMS-CURRENCYKEY, sy-vline,
  WA_EXT_RECON_ITEMS-PLC_SUP, sy-vline,
  WA_EXT_RECON_ITEMS-HSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EXT_RECON_ITEMS 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_EXT_RECON_ITEMS 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_EXT_RECON_ITEMS INTO WA_EXT_RECON_ITEMS.


*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_EXT_RECON_ITEMS-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EXT_RECON_ITEMS-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit AU132, internal->external for field CESS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_EXT_RECON_ITEMS-CESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EXT_RECON_ITEMS-CESS.
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_EXT_RECON_ITEMS_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
TAXRATE TYPE STRING,
BASEAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
CURRENCYKEY TYPE STRING,
PLC_SUP TYPE STRING,
HSN TYPE STRING,
TXVAL TYPE STRING,
RATE TYPE STRING,
CGST TYPE STRING,
SGST TYPE STRING,
IGST TYPE STRING,
CESS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EXT_RECON_ITEMS_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_EXT_RECON_ITEMS_STR-MANDT sy-vline 
WA_EXT_RECON_ITEMS_STR-BUKRS sy-vline 
WA_EXT_RECON_ITEMS_STR-BELNR sy-vline 
WA_EXT_RECON_ITEMS_STR-GJAHR sy-vline 
WA_EXT_RECON_ITEMS_STR-BUZEI sy-vline 
WA_EXT_RECON_ITEMS_STR-TAXRATE sy-vline 
WA_EXT_RECON_ITEMS_STR-BASEAMOUNT sy-vline 
WA_EXT_RECON_ITEMS_STR-TAXAMOUNT sy-vline 
WA_EXT_RECON_ITEMS_STR-CURRENCYKEY sy-vline 
WA_EXT_RECON_ITEMS_STR-PLC_SUP sy-vline 
WA_EXT_RECON_ITEMS_STR-HSN sy-vline 
WA_EXT_RECON_ITEMS_STR-TXVAL sy-vline 
WA_EXT_RECON_ITEMS_STR-RATE sy-vline 
WA_EXT_RECON_ITEMS_STR-CGST sy-vline 
WA_EXT_RECON_ITEMS_STR-SGST sy-vline 
WA_EXT_RECON_ITEMS_STR-IGST sy-vline 
WA_EXT_RECON_ITEMS_STR-CESS sy-vline      INTO ld_text SEPARATED BY SPACE.

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