ABAP Select data from SAP table DTA1AT_DOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DTA1AT_DOM 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 DTA1AT_DOM. 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 DTA1AT_DOM 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_DTA1AT_DOM TYPE STANDARD TABLE OF DTA1AT_DOM,
      WA_DTA1AT_DOM TYPE DTA1AT_DOM,
      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: <DTA1AT_DOM> TYPE DTA1AT_DOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DTA1AT_DOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DTA1AT_DOM
  INTO TABLE IT_DTA1AT_DOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTA1AT_DOM
*  INTO TABLE @DATA(IT_DTA1AT_DOM2).
*--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_DTA1AT_DOM INDEX 1 INTO DATA(WA_DTA1AT_DOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DTA1AT_DOM ASSIGNING <DTA1AT_DOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTA1AT_DOM>-FELD01 = 1.
<DTA1AT_DOM>-FELD02 = 1.
<DTA1AT_DOM>-FELD03 = 1.
<DTA1AT_DOM>-FELD04 = 1.
<DTA1AT_DOM>-FELD05 = 1.

ENDLOOP.

LOOP AT IT_DTA1AT_DOM INTO WA_DTA1AT_DOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTA1AT_DOM-FELD06, sy-vline,
  WA_DTA1AT_DOM-FELD07, sy-vline,
  WA_DTA1AT_DOM-FELD08, sy-vline,
  WA_DTA1AT_DOM-FELD09, sy-vline,
  WA_DTA1AT_DOM-FELD10, sy-vline,
  WA_DTA1AT_DOM-FELD11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTA1AT_DOM 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_DTA1AT_DOM 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_DTA1AT_DOM INTO WA_DTA1AT_DOM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DTA1AT_DOM_STR, 
FELD01 TYPE STRING,
FELD02 TYPE STRING,
FELD03 TYPE STRING,
FELD04 TYPE STRING,
FELD05 TYPE STRING,
FELD06 TYPE STRING,
FELD07 TYPE STRING,
FELD08 TYPE STRING,
FELD09 TYPE STRING,
FELD10 TYPE STRING,
FELD11 TYPE STRING,
FELD12 TYPE STRING,
FELDCRLF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTA1AT_DOM_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_DTA1AT_DOM_STR-FELD01 sy-vline 
WA_DTA1AT_DOM_STR-FELD02 sy-vline 
WA_DTA1AT_DOM_STR-FELD03 sy-vline 
WA_DTA1AT_DOM_STR-FELD04 sy-vline 
WA_DTA1AT_DOM_STR-FELD05 sy-vline 
WA_DTA1AT_DOM_STR-FELD06 sy-vline 
WA_DTA1AT_DOM_STR-FELD07 sy-vline 
WA_DTA1AT_DOM_STR-FELD08 sy-vline 
WA_DTA1AT_DOM_STR-FELD09 sy-vline 
WA_DTA1AT_DOM_STR-FELD10 sy-vline 
WA_DTA1AT_DOM_STR-FELD11 sy-vline 
WA_DTA1AT_DOM_STR-FELD12 sy-vline 
WA_DTA1AT_DOM_STR-FELDCRLF sy-vline      INTO ld_text SEPARATED BY SPACE.

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