ABAP Select data from SAP table REEX_DART_TAXDS_DOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEX_DART_TAXDS_DOC
*  INTO TABLE @DATA(IT_REEX_DART_TAXDS_DOC2).
*--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_REEX_DART_TAXDS_DOC INDEX 1 INTO DATA(WA_REEX_DART_TAXDS_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEX_DART_TAXDS_DOC>-MANDT = 1.
<REEX_DART_TAXDS_DOC>-ITEMGUID = 1.
<REEX_DART_TAXDS_DOC>-DOCGUID = 1.
<REEX_DART_TAXDS_DOC>-ITEMNO = 1.
<REEX_DART_TAXDS_DOC>-VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEX_DART_TAXDS_DOC-STATUS, sy-vline,
  WA_REEX_DART_TAXDS_DOC-OPTRATE, sy-vline,
  WA_REEX_DART_TAXDS_DOC-OPTMETH, sy-vline,
  WA_REEX_DART_TAXDS_DOC-DIFFNONDEDTAXAMT, sy-vline,
  WA_REEX_DART_TAXDS_DOC-DIFFDEDTAXAMT, sy-vline,
  WA_REEX_DART_TAXDS_DOC-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEX_DART_TAXDS_DOC 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_REEX_DART_TAXDS_DOC 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_REEX_DART_TAXDS_DOC INTO WA_REEX_DART_TAXDS_DOC.


*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 OPTMETH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEX_DART_TAXDS_DOC-OPTMETH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_DART_TAXDS_DOC-OPTMETH.
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_REEX_DART_TAXDS_DOC_STR, 
MANDT TYPE STRING,
ITEMGUID TYPE STRING,
DOCGUID TYPE STRING,
ITEMNO TYPE STRING,
VERSION TYPE STRING,
STATUS TYPE STRING,
OPTRATE TYPE STRING,
OPTMETH TYPE STRING,
DIFFNONDEDTAXAMT TYPE STRING,
DIFFDEDTAXAMT TYPE STRING,
CURRENCY TYPE STRING,
NONDEDACCOUNT TYPE STRING,
PROCESS TYPE STRING,
PROCESSGUID TYPE STRING,
REFDOCGUID TYPE STRING,
REFITEMNO TYPE STRING,
ISACTUALITEM TYPE STRING,
ISNOTCHANGEDITEM TYPE STRING,
ITEMHASERROR TYPE STRING,
REFDOCTYPE TYPE STRING,
REFDOCID TYPE STRING,
REFDOCID_ORIG TYPE STRING,
BUKRS TYPE STRING,
OBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEX_DART_TAXDS_DOC_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_REEX_DART_TAXDS_DOC_STR-MANDT sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-ITEMGUID sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-DOCGUID sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-ITEMNO sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-VERSION sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-STATUS sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-OPTRATE sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-OPTMETH sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-DIFFNONDEDTAXAMT sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-DIFFDEDTAXAMT sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-CURRENCY sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-NONDEDACCOUNT sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-PROCESS sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-PROCESSGUID sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-REFDOCGUID sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-REFITEMNO sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-ISACTUALITEM sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-ISNOTCHANGEDITEM sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-ITEMHASERROR sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-REFDOCTYPE sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-REFDOCID sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-REFDOCID_ORIG sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-BUKRS sy-vline 
WA_REEX_DART_TAXDS_DOC_STR-OBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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