ABAP Select data from SAP table SER09 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SER09 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 SER09. 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 SER09 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_SER09 TYPE STANDARD TABLE OF SER09,
      WA_SER09 TYPE SER09,
      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: <SER09> TYPE SER09.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SER09.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SER09
  INTO TABLE IT_SER09.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SER09
*  INTO TABLE @DATA(IT_SER092).
*--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_SER09 INDEX 1 INTO DATA(WA_SER092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SER09 ASSIGNING <SER09>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SER09>-MANDT = 1.
<SER09>-OBKNR = 1.
<SER09>-BANFN = 1.
<SER09>-BNFPO = 1.
<SER09>-ETENR = 1.

ENDLOOP.

LOOP AT IT_SER09 INTO WA_SER09.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SER09-BSTYP, sy-vline,
  WA_SER09-BSART, sy-vline,
  WA_SER09-PSTYP, sy-vline,
  WA_SER09-WERK, sy-vline,
  WA_SER09-LOEKZ, sy-vline,
  WA_SER09-ANZSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SER09 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_SER09 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_SER09 INTO WA_SER09.


*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 ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SER09-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SER09-BANFN.
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_SER09_STR, 
MANDT TYPE STRING,
OBKNR TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
ETENR TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
PSTYP TYPE STRING,
WERK TYPE STRING,
LOEKZ TYPE STRING,
ANZSN TYPE STRING,
DATUM TYPE STRING,
SERRU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SER09_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_SER09_STR-MANDT sy-vline 
WA_SER09_STR-OBKNR sy-vline 
WA_SER09_STR-BANFN sy-vline 
WA_SER09_STR-BNFPO sy-vline 
WA_SER09_STR-ETENR sy-vline 
WA_SER09_STR-BSTYP sy-vline 
WA_SER09_STR-BSART sy-vline 
WA_SER09_STR-PSTYP sy-vline 
WA_SER09_STR-WERK sy-vline 
WA_SER09_STR-LOEKZ sy-vline 
WA_SER09_STR-ANZSN sy-vline 
WA_SER09_STR-DATUM sy-vline 
WA_SER09_STR-SERRU sy-vline      INTO ld_text SEPARATED BY SPACE.

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