ABAP Select data from SAP table DD06V_STRUC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DD06V_STRUC 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 DD06V_STRUC. 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 DD06V_STRUC 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_DD06V_STRUC TYPE STANDARD TABLE OF DD06V_STRUC,
      WA_DD06V_STRUC TYPE DD06V_STRUC,
      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: <DD06V_STRUC> TYPE DD06V_STRUC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DD06V_STRUC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DD06V_STRUC
  INTO TABLE IT_DD06V_STRUC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DD06V_STRUC
*  INTO TABLE @DATA(IT_DD06V_STRUC2).
*--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_DD06V_STRUC INDEX 1 INTO DATA(WA_DD06V_STRUC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DD06V_STRUC ASSIGNING <DD06V_STRUC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DD06V_STRUC>-SQLTAB = 1.
<DD06V_STRUC>-DDLANGUAGE = 1.
<DD06V_STRUC>-SQLCLASS = 1.
<DD06V_STRUC>-KEYMAX = 1.
<DD06V_STRUC>-DATAMAX = 1.

ENDLOOP.

LOOP AT IT_DD06V_STRUC INTO WA_DD06V_STRUC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DD06V_STRUC-SNUMBYTE, sy-vline,
  WA_DD06V_STRUC-DDTEXT, sy-vline,
  WA_DD06V_STRUC-ACTFLAG, sy-vline,
  WA_DD06V_STRUC-APPLCLASS, sy-vline,
  WA_DD06V_STRUC-AUTHCLASS, sy-vline,
  WA_DD06V_STRUC-AS4USER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DD06V_STRUC 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_DD06V_STRUC 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_DD06V_STRUC INTO WA_DD06V_STRUC.


*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 ISOLA, internal->external for field DDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DD06V_STRUC-DDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DD06V_STRUC-DDLANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DD06V_STRUC-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DD06V_STRUC-MASTERLANG.
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_DD06V_STRUC_STR, 
SQLTAB TYPE STRING,
DDLANGUAGE TYPE STRING,
SQLCLASS TYPE STRING,
KEYMAX TYPE STRING,
DATAMAX TYPE STRING,
SNUMBYTE TYPE STRING,
DDTEXT TYPE STRING,
ACTFLAG TYPE STRING,
APPLCLASS TYPE STRING,
AUTHCLASS TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
MASTERLANG TYPE STRING,
RESERVESQT TYPE STRING,
UNICODELG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DD06V_STRUC_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_DD06V_STRUC_STR-SQLTAB sy-vline 
WA_DD06V_STRUC_STR-DDLANGUAGE sy-vline 
WA_DD06V_STRUC_STR-SQLCLASS sy-vline 
WA_DD06V_STRUC_STR-KEYMAX sy-vline 
WA_DD06V_STRUC_STR-DATAMAX sy-vline 
WA_DD06V_STRUC_STR-SNUMBYTE sy-vline 
WA_DD06V_STRUC_STR-DDTEXT sy-vline 
WA_DD06V_STRUC_STR-ACTFLAG sy-vline 
WA_DD06V_STRUC_STR-APPLCLASS sy-vline 
WA_DD06V_STRUC_STR-AUTHCLASS sy-vline 
WA_DD06V_STRUC_STR-AS4USER sy-vline 
WA_DD06V_STRUC_STR-AS4DATE sy-vline 
WA_DD06V_STRUC_STR-AS4TIME sy-vline 
WA_DD06V_STRUC_STR-MASTERLANG sy-vline 
WA_DD06V_STRUC_STR-RESERVESQT sy-vline 
WA_DD06V_STRUC_STR-UNICODELG sy-vline      INTO ld_text SEPARATED BY SPACE.

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