ABAP Select data from SAP table IWTYACCLDGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWTYACCLDGR
*  INTO TABLE @DATA(IT_IWTYACCLDGR2).
*--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_IWTYACCLDGR INDEX 1 INTO DATA(WA_IWTYACCLDGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWTYACCLDGR>-MANDT = 1.
<IWTYACCLDGR>-ACCOUNTINGDOCUMENT = 1.
<IWTYACCLDGR>-WRNTYVERSIONNUMBER = 1.
<IWTYACCLDGR>-SPECIALLEDGERDOCUMENTNUMBER = 1.
<IWTYACCLDGR>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWTYACCLDGR-FISCALYEAR, sy-vline,
  WA_IWTYACCLDGR-REFERENCEDOCUMENTTYPE, sy-vline,
  WA_IWTYACCLDGR-DOCUMENTREFERENCEID, sy-vline,
  WA_IWTYACCLDGR-ORIGINALREFERENCEDOCUMENT, sy-vline,
  WA_IWTYACCLDGR-PURCHASINGORGANIZATION, sy-vline,
  WA_IWTYACCLDGR-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWTYACCLDGR 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_IWTYACCLDGR 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_IWTYACCLDGR INTO WA_IWTYACCLDGR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field WRNTYSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWTYACCLDGR-WRNTYSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWTYACCLDGR-WRNTYSUPPLIER.
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_IWTYACCLDGR_STR, 
MANDT TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
WRNTYVERSIONNUMBER TYPE STRING,
SPECIALLEDGERDOCUMENTNUMBER TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
ORIGINALREFERENCEDOCUMENT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PLANT TYPE STRING,
WARRANTYCLAIMTYPE TYPE STRING,
WRNTYPARTNUMBER TYPE STRING,
WRNTYCLAIMHEADERUUID TYPE STRING,
WRNTYSUPPLIER TYPE STRING,
ACCOUNTINGDOCUMENTCATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWTYACCLDGR_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_IWTYACCLDGR_STR-MANDT sy-vline 
WA_IWTYACCLDGR_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_IWTYACCLDGR_STR-WRNTYVERSIONNUMBER sy-vline 
WA_IWTYACCLDGR_STR-SPECIALLEDGERDOCUMENTNUMBER sy-vline 
WA_IWTYACCLDGR_STR-COMPANYCODE sy-vline 
WA_IWTYACCLDGR_STR-FISCALYEAR sy-vline 
WA_IWTYACCLDGR_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_IWTYACCLDGR_STR-DOCUMENTREFERENCEID sy-vline 
WA_IWTYACCLDGR_STR-ORIGINALREFERENCEDOCUMENT sy-vline 
WA_IWTYACCLDGR_STR-PURCHASINGORGANIZATION sy-vline 
WA_IWTYACCLDGR_STR-PLANT sy-vline 
WA_IWTYACCLDGR_STR-WARRANTYCLAIMTYPE sy-vline 
WA_IWTYACCLDGR_STR-WRNTYPARTNUMBER sy-vline 
WA_IWTYACCLDGR_STR-WRNTYCLAIMHEADERUUID sy-vline 
WA_IWTYACCLDGR_STR-WRNTYSUPPLIER sy-vline 
WA_IWTYACCLDGR_STR-ACCOUNTINGDOCUMENTCATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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