ABAP Select data from SAP table BSEGCO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSEGCO
*  INTO TABLE @DATA(IT_BSEGCO2).
*--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_BSEGCO INDEX 1 INTO DATA(WA_BSEGCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSEGCO>-MANDT = 1.
<BSEGCO>-AWTYP = 1.
<BSEGCO>-AWREF = 1.
<BSEGCO>-AWORG = 1.
<BSEGCO>-AWSYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSEGCO-BUKRS, sy-vline,
  WA_BSEGCO-BELNR, sy-vline,
  WA_BSEGCO-GJAHR, sy-vline,
  WA_BSEGCO-BUZEI, sy-vline,
  WA_BSEGCO-HKONT, sy-vline,
  WA_BSEGCO-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSEGCO 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_BSEGCO 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_BSEGCO INTO WA_BSEGCO.


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

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

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

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-PROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBEL2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-VBEL2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-VBEL2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-DMBTR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BSEGCO-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGCO-EBELN.
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_BSEGCO_STR, 
MANDT TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
HKONT TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
NPLNR TYPE STRING,
PAOBJNR TYPE STRING,
PROJK TYPE STRING,
KSTRG TYPE STRING,
VBEL2 TYPE STRING,
POSN2 TYPE STRING,
PERNR TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
SGTXT TYPE STRING,
SGTXT_OLD TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,
IMKEY TYPE STRING,
DABRZ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSEGCO_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_BSEGCO_STR-MANDT sy-vline 
WA_BSEGCO_STR-AWTYP sy-vline 
WA_BSEGCO_STR-AWREF sy-vline 
WA_BSEGCO_STR-AWORG sy-vline 
WA_BSEGCO_STR-AWSYS sy-vline 
WA_BSEGCO_STR-BUKRS sy-vline 
WA_BSEGCO_STR-BELNR sy-vline 
WA_BSEGCO_STR-GJAHR sy-vline 
WA_BSEGCO_STR-BUZEI sy-vline 
WA_BSEGCO_STR-HKONT sy-vline 
WA_BSEGCO_STR-KOKRS sy-vline 
WA_BSEGCO_STR-KOSTL sy-vline 
WA_BSEGCO_STR-AUFNR sy-vline 
WA_BSEGCO_STR-AUFPL sy-vline 
WA_BSEGCO_STR-APLZL sy-vline 
WA_BSEGCO_STR-NPLNR sy-vline 
WA_BSEGCO_STR-PAOBJNR sy-vline 
WA_BSEGCO_STR-PROJK sy-vline 
WA_BSEGCO_STR-KSTRG sy-vline 
WA_BSEGCO_STR-VBEL2 sy-vline 
WA_BSEGCO_STR-POSN2 sy-vline 
WA_BSEGCO_STR-PERNR sy-vline 
WA_BSEGCO_STR-MATNR sy-vline 
WA_BSEGCO_STR-BWKEY sy-vline 
WA_BSEGCO_STR-SGTXT sy-vline 
WA_BSEGCO_STR-SGTXT_OLD sy-vline 
WA_BSEGCO_STR-MENGE sy-vline 
WA_BSEGCO_STR-MEINS sy-vline 
WA_BSEGCO_STR-SHKZG sy-vline 
WA_BSEGCO_STR-DMBTR sy-vline 
WA_BSEGCO_STR-DUMMY_INCL_EEW_COBL sy-vline 
WA_BSEGCO_STR-IMKEY sy-vline 
WA_BSEGCO_STR-DABRZ sy-vline 
WA_BSEGCO_STR-EBELN sy-vline 
WA_BSEGCO_STR-EBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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