ABAP Select data from SAP table T496DD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T496DD 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 T496DD. 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 T496DD 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_T496DD TYPE STANDARD TABLE OF T496DD,
      WA_T496DD TYPE T496DD,
      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: <T496DD> TYPE T496DD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T496DD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T496DD
  INTO TABLE IT_T496DD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T496DD
*  INTO TABLE @DATA(IT_T496DD2).
*--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_T496DD INDEX 1 INTO DATA(WA_T496DD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T496DD ASSIGNING <T496DD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T496DD>-LG01N = 1.
<T496DD>-LG01L = 1.
<T496DD>-LG02N = 1.
<T496DD>-LG02L = 1.
<T496DD>-LG03N = 1.

ENDLOOP.

LOOP AT IT_T496DD INTO WA_T496DD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T496DD-LG03L, sy-vline,
  WA_T496DD-LG04N, sy-vline,
  WA_T496DD-LG04L, sy-vline,
  WA_T496DD-LV01N, sy-vline,
  WA_T496DD-LV01L, sy-vline,
  WA_T496DD-LV02N, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T496DD 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_T496DD 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_T496DD INTO WA_T496DD.


*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_T496DD_STR, 
LG01N TYPE STRING,
LG01L TYPE STRING,
LG02N TYPE STRING,
LG02L TYPE STRING,
LG03N TYPE STRING,
LG03L TYPE STRING,
LG04N TYPE STRING,
LG04L TYPE STRING,
LV01N TYPE STRING,
LV01L TYPE STRING,
LV02N TYPE STRING,
LV02L TYPE STRING,
LV03N TYPE STRING,
LV03L TYPE STRING,
LV04N TYPE STRING,
LV04L TYPE STRING,
LK01N TYPE STRING,
LK01L TYPE STRING,
LK02N TYPE STRING,
LK02L TYPE STRING,
LK03N TYPE STRING,
LK03L TYPE STRING,
LK04N TYPE STRING,
LK04L TYPE STRING,
LF01N TYPE STRING,
LF01L TYPE STRING,
LF02N TYPE STRING,
LF02L TYPE STRING,
LF03N TYPE STRING,
LF03L TYPE STRING,
LF04N TYPE STRING,
LF04L TYPE STRING,
LP01N TYPE STRING,
LP01L TYPE STRING,
LP02N TYPE STRING,
LP02L TYPE STRING,
LP03N TYPE STRING,
LP03L TYPE STRING,
LP04N TYPE STRING,
LP04L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T496DD_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_T496DD_STR-LG01N sy-vline 
WA_T496DD_STR-LG01L sy-vline 
WA_T496DD_STR-LG02N sy-vline 
WA_T496DD_STR-LG02L sy-vline 
WA_T496DD_STR-LG03N sy-vline 
WA_T496DD_STR-LG03L sy-vline 
WA_T496DD_STR-LG04N sy-vline 
WA_T496DD_STR-LG04L sy-vline 
WA_T496DD_STR-LV01N sy-vline 
WA_T496DD_STR-LV01L sy-vline 
WA_T496DD_STR-LV02N sy-vline 
WA_T496DD_STR-LV02L sy-vline 
WA_T496DD_STR-LV03N sy-vline 
WA_T496DD_STR-LV03L sy-vline 
WA_T496DD_STR-LV04N sy-vline 
WA_T496DD_STR-LV04L sy-vline 
WA_T496DD_STR-LK01N sy-vline 
WA_T496DD_STR-LK01L sy-vline 
WA_T496DD_STR-LK02N sy-vline 
WA_T496DD_STR-LK02L sy-vline 
WA_T496DD_STR-LK03N sy-vline 
WA_T496DD_STR-LK03L sy-vline 
WA_T496DD_STR-LK04N sy-vline 
WA_T496DD_STR-LK04L sy-vline 
WA_T496DD_STR-LF01N sy-vline 
WA_T496DD_STR-LF01L sy-vline 
WA_T496DD_STR-LF02N sy-vline 
WA_T496DD_STR-LF02L sy-vline 
WA_T496DD_STR-LF03N sy-vline 
WA_T496DD_STR-LF03L sy-vline 
WA_T496DD_STR-LF04N sy-vline 
WA_T496DD_STR-LF04L sy-vline 
WA_T496DD_STR-LP01N sy-vline 
WA_T496DD_STR-LP01L sy-vline 
WA_T496DD_STR-LP02N sy-vline 
WA_T496DD_STR-LP02L sy-vline 
WA_T496DD_STR-LP03N sy-vline 
WA_T496DD_STR-LP03L sy-vline 
WA_T496DD_STR-LP04N sy-vline 
WA_T496DD_STR-LP04L sy-vline      INTO ld_text SEPARATED BY SPACE.

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