ABAP Select data from SAP table BDT_TBZ3A_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BDT_TBZ3A_EXT 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_TBZ3A_EXT. 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_TBZ3A_EXT 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_TBZ3A_EXT TYPE STANDARD TABLE OF BDT_TBZ3A_EXT,
      WA_BDT_TBZ3A_EXT TYPE BDT_TBZ3A_EXT,
      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_TBZ3A_EXT> TYPE BDT_TBZ3A_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BDT_TBZ3A_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BDT_TBZ3A_EXT
  INTO TABLE IT_BDT_TBZ3A_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDT_TBZ3A_EXT
*  INTO TABLE @DATA(IT_BDT_TBZ3A_EXT2).
*--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_TBZ3A_EXT INDEX 1 INTO DATA(WA_BDT_TBZ3A_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BDT_TBZ3A_EXT ASSIGNING <BDT_TBZ3A_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDT_TBZ3A_EXT>-CLIENT = 1.
<BDT_TBZ3A_EXT>-OBJAP = 1.
<BDT_TBZ3A_EXT>-DYNID = 1.
<BDT_TBZ3A_EXT>-XSCIN = 1.
<BDT_TBZ3A_EXT>-XSCDT = 1.

ENDLOOP.

LOOP AT IT_BDT_TBZ3A_EXT INTO WA_BDT_TBZ3A_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDT_TBZ3A_EXT-DYART, sy-vline,
  WA_BDT_TBZ3A_EXT-XSCGP, sy-vline,
  WA_BDT_TBZ3A_EXT-TRDYN, sy-vline,
  WA_BDT_TBZ3A_EXT-XSCOT, sy-vline,
  WA_BDT_TBZ3A_EXT-FNAME, sy-vline,
  WA_BDT_TBZ3A_EXT-XSTRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BDT_TBZ3A_EXT 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_TBZ3A_EXT 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_TBZ3A_EXT INTO WA_BDT_TBZ3A_EXT.


*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_TBZ3A_EXT_STR, 
CLIENT TYPE STRING,
OBJAP TYPE STRING,
DYNID TYPE STRING,
XSCIN TYPE STRING,
XSCDT TYPE STRING,
DYART TYPE STRING,
XSCGP TYPE STRING,
TRDYN TYPE STRING,
XSCOT TYPE STRING,
FNAME TYPE STRING,
XSTRP TYPE STRING,
XSCFS TYPE STRING,
XSCPP TYPE STRING,
DYTYP TYPE STRING,
SPALL TYPE STRING,
ZEILO TYPE STRING,
SPALR TYPE STRING,
ZEILU TYPE STRING,
DTX50 TYPE STRING,
DTITL TYPE STRING,
CALLS TYPE STRING,
XVISIBLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDT_TBZ3A_EXT_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_TBZ3A_EXT_STR-CLIENT sy-vline 
WA_BDT_TBZ3A_EXT_STR-OBJAP sy-vline 
WA_BDT_TBZ3A_EXT_STR-DYNID sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCIN sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCDT sy-vline 
WA_BDT_TBZ3A_EXT_STR-DYART sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCGP sy-vline 
WA_BDT_TBZ3A_EXT_STR-TRDYN sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCOT sy-vline 
WA_BDT_TBZ3A_EXT_STR-FNAME sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSTRP sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCFS sy-vline 
WA_BDT_TBZ3A_EXT_STR-XSCPP sy-vline 
WA_BDT_TBZ3A_EXT_STR-DYTYP sy-vline 
WA_BDT_TBZ3A_EXT_STR-SPALL sy-vline 
WA_BDT_TBZ3A_EXT_STR-ZEILO sy-vline 
WA_BDT_TBZ3A_EXT_STR-SPALR sy-vline 
WA_BDT_TBZ3A_EXT_STR-ZEILU sy-vline 
WA_BDT_TBZ3A_EXT_STR-DTX50 sy-vline 
WA_BDT_TBZ3A_EXT_STR-DTITL sy-vline 
WA_BDT_TBZ3A_EXT_STR-CALLS sy-vline 
WA_BDT_TBZ3A_EXT_STR-XVISIBLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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