ABAP Select data from SAP table AUTHDDFI0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AUTHDDFI0 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 AUTHDDFI0. 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 AUTHDDFI0 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_AUTHDDFI0 TYPE STANDARD TABLE OF AUTHDDFI0,
      WA_AUTHDDFI0 TYPE AUTHDDFI0,
      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: <AUTHDDFI0> TYPE AUTHDDFI0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AUTHDDFI0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AUTHDDFI0
  INTO TABLE IT_AUTHDDFI0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AUTHDDFI0
*  INTO TABLE @DATA(IT_AUTHDDFI02).
*--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_AUTHDDFI0 INDEX 1 INTO DATA(WA_AUTHDDFI02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AUTHDDFI0 ASSIGNING <AUTHDDFI0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AUTHDDFI0>-BA1 = 1.
<AUTHDDFI0>-BA2 = 1.
<AUTHDDFI0>-BA3 = 1.
<AUTHDDFI0>-BA4 = 1.
<AUTHDDFI0>-BA5 = 1.

ENDLOOP.

LOOP AT IT_AUTHDDFI0 INTO WA_AUTHDDFI0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AUTHDDFI0-BA6, sy-vline,
  WA_AUTHDDFI0-BA7, sy-vline,
  WA_AUTHDDFI0-BA8, sy-vline,
  WA_AUTHDDFI0-BA9, sy-vline,
  WA_AUTHDDFI0-BA10, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_AUTHDDFI0 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_AUTHDDFI0 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_AUTHDDFI0 INTO WA_AUTHDDFI0.


*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_AUTHDDFI0_STR, 
BA1 TYPE STRING,
BA2 TYPE STRING,
BA3 TYPE STRING,
BA4 TYPE STRING,
BA5 TYPE STRING,
BA6 TYPE STRING,
BA7 TYPE STRING,
BA8 TYPE STRING,
BA9 TYPE STRING,
BA10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AUTHDDFI0_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_AUTHDDFI0_STR-BA1 sy-vline 
WA_AUTHDDFI0_STR-BA2 sy-vline 
WA_AUTHDDFI0_STR-BA3 sy-vline 
WA_AUTHDDFI0_STR-BA4 sy-vline 
WA_AUTHDDFI0_STR-BA5 sy-vline 
WA_AUTHDDFI0_STR-BA6 sy-vline 
WA_AUTHDDFI0_STR-BA7 sy-vline 
WA_AUTHDDFI0_STR-BA8 sy-vline 
WA_AUTHDDFI0_STR-BA9 sy-vline 
WA_AUTHDDFI0_STR-BA10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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