ABAP Select data from SAP table T609A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T609A 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 T609A. 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 T609A 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_T609A TYPE STANDARD TABLE OF T609A,
      WA_T609A TYPE T609A,
      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: <T609A> TYPE T609A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T609A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T609A
  INTO TABLE IT_T609A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T609A
*  INTO TABLE @DATA(IT_T609A2).
*--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_T609A INDEX 1 INTO DATA(WA_T609A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T609A ASSIGNING <T609A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T609A>-MANDT = 1.
<T609A>-SEGAL = 1.
<T609A>-INTRA = 1.
<T609A>-EXTRA = 1.
<T609A>-KOBRA = 1.

ENDLOOP.

LOOP AT IT_T609A INTO WA_T609A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T609A-SEDCO, sy-vline,
  WA_T609A-INTEX, sy-vline,
  WA_T609A-INTIN, sy-vline,
  WA_T609A-EXTEX, sy-vline,
  WA_T609A-EXTIN, sy-vline,
  WA_T609A-KOBEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T609A 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_T609A 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_T609A INTO WA_T609A.


*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_T609A_STR, 
MANDT TYPE STRING,
SEGAL TYPE STRING,
INTRA TYPE STRING,
EXTRA TYPE STRING,
KOBRA TYPE STRING,
SEDCO TYPE STRING,
INTEX TYPE STRING,
INTIN TYPE STRING,
EXTEX TYPE STRING,
EXTIN TYPE STRING,
KOBEX TYPE STRING,
KOBIN TYPE STRING,
SEDEX TYPE STRING,
SEDIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T609A_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_T609A_STR-MANDT sy-vline 
WA_T609A_STR-SEGAL sy-vline 
WA_T609A_STR-INTRA sy-vline 
WA_T609A_STR-EXTRA sy-vline 
WA_T609A_STR-KOBRA sy-vline 
WA_T609A_STR-SEDCO sy-vline 
WA_T609A_STR-INTEX sy-vline 
WA_T609A_STR-INTIN sy-vline 
WA_T609A_STR-EXTEX sy-vline 
WA_T609A_STR-EXTIN sy-vline 
WA_T609A_STR-KOBEX sy-vline 
WA_T609A_STR-KOBIN sy-vline 
WA_T609A_STR-SEDEX sy-vline 
WA_T609A_STR-SEDIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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