ABAP Select data from SAP table FBSEGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FBSEGR
*  INTO TABLE @DATA(IT_FBSEGR2).
*--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_FBSEGR INDEX 1 INTO DATA(WA_FBSEGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FBSEGR>-MANDT = 1.
<FBSEGR>-BUKRS = 1.
<FBSEGR>-BELNR = 1.
<FBSEGR>-GJAHR = 1.
<FBSEGR>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FBSEGR-AUGBL, sy-vline,
  WA_FBSEGR-AUGDT, sy-vline,
  WA_FBSEGR-STBLG, sy-vline,
  WA_FBSEGR-STJAH, sy-vline,
  WA_FBSEGR-BSTAT, sy-vline,
  WA_FBSEGR-AUGGJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FBSEGR 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_FBSEGR 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_FBSEGR INTO WA_FBSEGR.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBLG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-STBLG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-STBLG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field STJAH
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-STJAH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-STJAH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AUGGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FBSEGR-AUGGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FBSEGR-AUGGJ.
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_FBSEGR_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
STBLG TYPE STRING,
STJAH TYPE STRING,
BSTAT TYPE STRING,
AUGGJ TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FBSEGR_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_FBSEGR_STR-MANDT sy-vline 
WA_FBSEGR_STR-BUKRS sy-vline 
WA_FBSEGR_STR-BELNR sy-vline 
WA_FBSEGR_STR-GJAHR sy-vline 
WA_FBSEGR_STR-BUZEI sy-vline 
WA_FBSEGR_STR-AUGBL sy-vline 
WA_FBSEGR_STR-AUGDT sy-vline 
WA_FBSEGR_STR-STBLG sy-vline 
WA_FBSEGR_STR-STJAH sy-vline 
WA_FBSEGR_STR-BSTAT sy-vline 
WA_FBSEGR_STR-AUGGJ sy-vline 
WA_FBSEGR_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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