ABAP Select data from SAP table BDT_DATA_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDT_DATA_S
*  INTO TABLE @DATA(IT_BDT_DATA_S2).
*--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_BDT_DATA_S INDEX 1 INTO DATA(WA_BDT_DATA_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDT_DATA_S>-CLIENT = 1.
<BDT_DATA_S>-SYST = 1.
<BDT_DATA_S>-VERSION = 1.
<BDT_DATA_S>-TBZ0A = 1.
<BDT_DATA_S>-TBZ0C = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDT_DATA_S-TBZ0D, sy-vline,
  WA_BDT_DATA_S-TBZ0G, sy-vline,
  WA_BDT_DATA_S-TBZ0I, sy-vline,
  WA_BDT_DATA_S-TBZ0J, sy-vline,
  WA_BDT_DATA_S-TBZ0O_2, sy-vline,
  WA_BDT_DATA_S-TBZ0O, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BDT_DATA_S 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_BDT_DATA_S 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_BDT_DATA_S INTO WA_BDT_DATA_S.


*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_BDT_DATA_S_STR, 
CLIENT TYPE STRING,
SYST TYPE STRING,
VERSION TYPE STRING,
TBZ0A TYPE STRING,
TBZ0C TYPE STRING,
TBZ0D TYPE STRING,
TBZ0G TYPE STRING,
TBZ0I TYPE STRING,
TBZ0J TYPE STRING,
TBZ0O_2 TYPE STRING,
TBZ0O TYPE STRING,
TBZ0Q TYPE STRING,
TBZ0S TYPE STRING,
TBZ0U TYPE STRING,
TBZ0 TYPE STRING,
TBZ1C TYPE STRING,
TBZ1F TYPE STRING,
TBZ1G TYPE STRING,
TBZ1H TYPE STRING,
TBZ1K TYPE STRING,
TBZ1 TYPE STRING,
TBZ3A TYPE STRING,
TBZ3C TYPE STRING,
TBZ3E TYPE STRING,
TBZ3G TYPE STRING,
TBZ3H TYPE STRING,
TBZ3I TYPE STRING,
TBZ3K TYPE STRING,
TBZ3L TYPE STRING,
TBZ3N TYPE STRING,
TBZ3P_2 TYPE STRING,
TBZ3P TYPE STRING,
TBZ3Q TYPE STRING,
TBZ3R TYPE STRING,
TBZ3S TYPE STRING,
TBZ3W TYPE STRING,
TBZ3 TYPE STRING,
TBZ4A TYPE STRING,
TBZ4C TYPE STRING,
TBZ4 TYPE STRING,
TBZ9C TYPE STRING,
TBZ9E TYPE STRING,
TBZJ1C TYPE STRING,
TBZJ1 TYPE STRING,
TBZJ2 TYPE STRING,
TBZS2 TYPE STRING,
TBZS5 TYPE STRING,
TB003 TYPE STRING,
TB003A TYPE STRING,
TB108 TYPE STRING,
DATA_LANGU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDT_DATA_S_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_BDT_DATA_S_STR-CLIENT sy-vline 
WA_BDT_DATA_S_STR-SYST sy-vline 
WA_BDT_DATA_S_STR-VERSION sy-vline 
WA_BDT_DATA_S_STR-TBZ0A sy-vline 
WA_BDT_DATA_S_STR-TBZ0C sy-vline 
WA_BDT_DATA_S_STR-TBZ0D sy-vline 
WA_BDT_DATA_S_STR-TBZ0G sy-vline 
WA_BDT_DATA_S_STR-TBZ0I sy-vline 
WA_BDT_DATA_S_STR-TBZ0J sy-vline 
WA_BDT_DATA_S_STR-TBZ0O_2 sy-vline 
WA_BDT_DATA_S_STR-TBZ0O sy-vline 
WA_BDT_DATA_S_STR-TBZ0Q sy-vline 
WA_BDT_DATA_S_STR-TBZ0S sy-vline 
WA_BDT_DATA_S_STR-TBZ0U sy-vline 
WA_BDT_DATA_S_STR-TBZ0 sy-vline 
WA_BDT_DATA_S_STR-TBZ1C sy-vline 
WA_BDT_DATA_S_STR-TBZ1F sy-vline 
WA_BDT_DATA_S_STR-TBZ1G sy-vline 
WA_BDT_DATA_S_STR-TBZ1H sy-vline 
WA_BDT_DATA_S_STR-TBZ1K sy-vline 
WA_BDT_DATA_S_STR-TBZ1 sy-vline 
WA_BDT_DATA_S_STR-TBZ3A sy-vline 
WA_BDT_DATA_S_STR-TBZ3C sy-vline 
WA_BDT_DATA_S_STR-TBZ3E sy-vline 
WA_BDT_DATA_S_STR-TBZ3G sy-vline 
WA_BDT_DATA_S_STR-TBZ3H sy-vline 
WA_BDT_DATA_S_STR-TBZ3I sy-vline 
WA_BDT_DATA_S_STR-TBZ3K sy-vline 
WA_BDT_DATA_S_STR-TBZ3L sy-vline 
WA_BDT_DATA_S_STR-TBZ3N sy-vline 
WA_BDT_DATA_S_STR-TBZ3P_2 sy-vline 
WA_BDT_DATA_S_STR-TBZ3P sy-vline 
WA_BDT_DATA_S_STR-TBZ3Q sy-vline 
WA_BDT_DATA_S_STR-TBZ3R sy-vline 
WA_BDT_DATA_S_STR-TBZ3S sy-vline 
WA_BDT_DATA_S_STR-TBZ3W sy-vline 
WA_BDT_DATA_S_STR-TBZ3 sy-vline 
WA_BDT_DATA_S_STR-TBZ4A sy-vline 
WA_BDT_DATA_S_STR-TBZ4C sy-vline 
WA_BDT_DATA_S_STR-TBZ4 sy-vline 
WA_BDT_DATA_S_STR-TBZ9C sy-vline 
WA_BDT_DATA_S_STR-TBZ9E sy-vline 
WA_BDT_DATA_S_STR-TBZJ1C sy-vline 
WA_BDT_DATA_S_STR-TBZJ1 sy-vline 
WA_BDT_DATA_S_STR-TBZJ2 sy-vline 
WA_BDT_DATA_S_STR-TBZS2 sy-vline 
WA_BDT_DATA_S_STR-TBZS5 sy-vline 
WA_BDT_DATA_S_STR-TB003 sy-vline 
WA_BDT_DATA_S_STR-TB003A sy-vline 
WA_BDT_DATA_S_STR-TB108 sy-vline 
WA_BDT_DATA_S_STR-DATA_LANGU sy-vline      INTO ld_text SEPARATED BY SPACE.

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