ABAP Select data from SAP table DD08D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DD08D 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 DD08D. 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 DD08D 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_DD08D TYPE STANDARD TABLE OF DD08D,
      WA_DD08D TYPE DD08D,
      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: <DD08D> TYPE DD08D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DD08D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DD08D
  INTO TABLE IT_DD08D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DD08D
*  INTO TABLE @DATA(IT_DD08D2).
*--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_DD08D INDEX 1 INTO DATA(WA_DD08D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DD08D ASSIGNING <DD08D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DD08D>-TABNAME = 1.
<DD08D>-FIELDNAME = 1.
<DD08D>-DDTEXT = 1.
<DD08D>-INHERITED = 1.
<DD08D>-FRKART = 1.

ENDLOOP.

LOOP AT IT_DD08D INTO WA_DD08D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DD08D-CARDLEFT, sy-vline,
  WA_DD08D-CARD, sy-vline,
  WA_DD08D-ARBGB, sy-vline,
  WA_DD08D-MSGNR, sy-vline,
  WA_DD08D-DYNPCHECK, sy-vline,
  WA_DD08D-CHECKTABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DD08D 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_DD08D 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_DD08D INTO WA_DD08D.


*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_DD08D_STR, 
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DDTEXT TYPE STRING,
INHERITED TYPE STRING,
FRKART TYPE STRING,
CARDLEFT TYPE STRING,
CARD TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
DYNPCHECK TYPE STRING,
CHECKTABLE TYPE STRING,
FORTABLE TYPE STRING,
FORKEY TYPE STRING,
CHECKFIELD TYPE STRING,
GENERIC TYPE STRING,
CONSTANT TYPE STRING,
FRKART_NEW TYPE STRING,
N_FRKART TYPE STRING,
K_FRKART TYPE STRING,
T_FRKART TYPE STRING,
D_FRKART TYPE STRING,
INCLFK TYPE STRING,
FK_ORIGIN TYPE STRING,
FKOR_INFO TYPE STRING,
FK_APPEND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DD08D_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_DD08D_STR-TABNAME sy-vline 
WA_DD08D_STR-FIELDNAME sy-vline 
WA_DD08D_STR-DDTEXT sy-vline 
WA_DD08D_STR-INHERITED sy-vline 
WA_DD08D_STR-FRKART sy-vline 
WA_DD08D_STR-CARDLEFT sy-vline 
WA_DD08D_STR-CARD sy-vline 
WA_DD08D_STR-ARBGB sy-vline 
WA_DD08D_STR-MSGNR sy-vline 
WA_DD08D_STR-DYNPCHECK sy-vline 
WA_DD08D_STR-CHECKTABLE sy-vline 
WA_DD08D_STR-FORTABLE sy-vline 
WA_DD08D_STR-FORKEY sy-vline 
WA_DD08D_STR-CHECKFIELD sy-vline 
WA_DD08D_STR-GENERIC sy-vline 
WA_DD08D_STR-CONSTANT sy-vline 
WA_DD08D_STR-FRKART_NEW sy-vline 
WA_DD08D_STR-N_FRKART sy-vline 
WA_DD08D_STR-K_FRKART sy-vline 
WA_DD08D_STR-T_FRKART sy-vline 
WA_DD08D_STR-D_FRKART sy-vline 
WA_DD08D_STR-INCLFK sy-vline 
WA_DD08D_STR-FK_ORIGIN sy-vline 
WA_DD08D_STR-FKOR_INFO sy-vline 
WA_DD08D_STR-FK_APPEND sy-vline      INTO ld_text SEPARATED BY SPACE.

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