ABAP Select data from SAP table BSEGL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSEGL
*  INTO TABLE @DATA(IT_BSEGL2).
*--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_BSEGL INDEX 1 INTO DATA(WA_BSEGL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSEGL>-KOBEZ = 1.
<BSEGL>-KTONR = 1.
<BSEGL>-BUKRS = 1.
<BSEGL>-AZBET = 1.
<BSEGL>-AZSTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSEGL-HKBEZ, sy-vline,
  WA_BSEGL-VORNR, sy-vline,
  WA_BSEGL-PKOSTL, sy-vline,
  WA_BSEGL-ACCASTY, sy-vline,
  WA_BSEGL-ACCAS, sy-vline,
  WA_BSEGL-PACCASTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSEGL 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_BSEGL 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_BSEGL INTO WA_BSEGL.


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

*Conversion exit AC172, internal->external for field AZBET
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-AZBET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-AZBET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field AZSTE
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-AZSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-AZSTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-VORNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit OBART, internal->external for field ACCASTY
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-ACCASTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-ACCASTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBART, internal->external for field PACCASTY
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-PACCASTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-PACCASTY.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AC132, internal->external for field DMBE4
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE5
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE6
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE7
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE8
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE8
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE8.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE9
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE10
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE10
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE10.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE2_K
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE2_K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE2_K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBE3_O
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-DMBE3_O
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-DMBE3_O.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PEGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BSEGL-PEGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGL-PEGRUP.
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_BSEGL_STR, 
KOBEZ TYPE STRING,
KTONR TYPE STRING,
BUKRS TYPE STRING,
AZBET TYPE STRING,
AZSTE TYPE STRING,
HKBEZ TYPE STRING,
VORNR TYPE STRING,
PKOSTL TYPE STRING,
ACCASTY TYPE STRING,
ACCAS TYPE STRING,
PACCASTY TYPE STRING,
PACCAS TYPE STRING,
DOCNR_LD TYPE STRING,
DMBE4 TYPE STRING,
DMBE5 TYPE STRING,
DMBE6 TYPE STRING,
DMBE7 TYPE STRING,
DMBE8 TYPE STRING,
DMBE9 TYPE STRING,
DMBE10 TYPE STRING,
HWAE4 TYPE STRING,
HWAE5 TYPE STRING,
HWAE6 TYPE STRING,
HWAE7 TYPE STRING,
HWAE8 TYPE STRING,
HWAE9 TYPE STRING,
HWAE10 TYPE STRING,
CURT4 TYPE STRING,
CURT5 TYPE STRING,
CURT6 TYPE STRING,
CURT7 TYPE STRING,
CURT8 TYPE STRING,
CURT9 TYPE STRING,
CURT10 TYPE STRING,
DMBE2_K TYPE STRING,
HWAE2_K TYPE STRING,
CURT2_K TYPE STRING,
DMBE3_O TYPE STRING,
HWAE3_O TYPE STRING,
CURT3_O TYPE STRING,
ACDOC_EEW_DUMMY TYPE STRING,
BDGT_CNSMPN_DATE TYPE STRING,
BDGT_CNSMPN_PERIOD TYPE STRING,
BDGT_CNSMPN_YEAR TYPE STRING,
BDGT_RELEVANT TYPE STRING,
BDGT_CNSMPN_TYPE TYPE STRING,
BDGT_CNSMPN_AMOUNT_TYPE TYPE STRING,
RSPONSORED_PROG TYPE STRING,
RSPONSORED_CLASS TYPE STRING,
RBDGT_VLDTY_NBR TYPE STRING,
ERLKZ TYPE STRING,
FIPEX TYPE STRING,
PVNAME TYPE STRING,
PEGRUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSEGL_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_BSEGL_STR-KOBEZ sy-vline 
WA_BSEGL_STR-KTONR sy-vline 
WA_BSEGL_STR-BUKRS sy-vline 
WA_BSEGL_STR-AZBET sy-vline 
WA_BSEGL_STR-AZSTE sy-vline 
WA_BSEGL_STR-HKBEZ sy-vline 
WA_BSEGL_STR-VORNR sy-vline 
WA_BSEGL_STR-PKOSTL sy-vline 
WA_BSEGL_STR-ACCASTY sy-vline 
WA_BSEGL_STR-ACCAS sy-vline 
WA_BSEGL_STR-PACCASTY sy-vline 
WA_BSEGL_STR-PACCAS sy-vline 
WA_BSEGL_STR-DOCNR_LD sy-vline 
WA_BSEGL_STR-DMBE4 sy-vline 
WA_BSEGL_STR-DMBE5 sy-vline 
WA_BSEGL_STR-DMBE6 sy-vline 
WA_BSEGL_STR-DMBE7 sy-vline 
WA_BSEGL_STR-DMBE8 sy-vline 
WA_BSEGL_STR-DMBE9 sy-vline 
WA_BSEGL_STR-DMBE10 sy-vline 
WA_BSEGL_STR-HWAE4 sy-vline 
WA_BSEGL_STR-HWAE5 sy-vline 
WA_BSEGL_STR-HWAE6 sy-vline 
WA_BSEGL_STR-HWAE7 sy-vline 
WA_BSEGL_STR-HWAE8 sy-vline 
WA_BSEGL_STR-HWAE9 sy-vline 
WA_BSEGL_STR-HWAE10 sy-vline 
WA_BSEGL_STR-CURT4 sy-vline 
WA_BSEGL_STR-CURT5 sy-vline 
WA_BSEGL_STR-CURT6 sy-vline 
WA_BSEGL_STR-CURT7 sy-vline 
WA_BSEGL_STR-CURT8 sy-vline 
WA_BSEGL_STR-CURT9 sy-vline 
WA_BSEGL_STR-CURT10 sy-vline 
WA_BSEGL_STR-DMBE2_K sy-vline 
WA_BSEGL_STR-HWAE2_K sy-vline 
WA_BSEGL_STR-CURT2_K sy-vline 
WA_BSEGL_STR-DMBE3_O sy-vline 
WA_BSEGL_STR-HWAE3_O sy-vline 
WA_BSEGL_STR-CURT3_O sy-vline 
WA_BSEGL_STR-ACDOC_EEW_DUMMY sy-vline 
WA_BSEGL_STR-BDGT_CNSMPN_DATE sy-vline 
WA_BSEGL_STR-BDGT_CNSMPN_PERIOD sy-vline 
WA_BSEGL_STR-BDGT_CNSMPN_YEAR sy-vline 
WA_BSEGL_STR-BDGT_RELEVANT sy-vline 
WA_BSEGL_STR-BDGT_CNSMPN_TYPE sy-vline 
WA_BSEGL_STR-BDGT_CNSMPN_AMOUNT_TYPE sy-vline 
WA_BSEGL_STR-RSPONSORED_PROG sy-vline 
WA_BSEGL_STR-RSPONSORED_CLASS sy-vline 
WA_BSEGL_STR-RBDGT_VLDTY_NBR sy-vline 
WA_BSEGL_STR-ERLKZ sy-vline 
WA_BSEGL_STR-FIPEX sy-vline 
WA_BSEGL_STR-PVNAME sy-vline 
WA_BSEGL_STR-PEGRUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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