ABAP Select data from SAP table BSEGM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSEGM
*  INTO TABLE @DATA(IT_BSEGM2).
*--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_BSEGM INDEX 1 INTO DATA(WA_BSEGM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSEGM-AEDAT, sy-vline,
  WA_BSEGM-MADAT, sy-vline,
  WA_BSEGM-MANST, sy-vline,
  WA_BSEGM-MANSP, sy-vline,
  WA_BSEGM-MSCHL, sy-vline,
  WA_BSEGM-HBKID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSEGM 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_BSEGM 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_BSEGM INTO WA_BSEGM.


*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_BSEGM-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGM-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit AU132, internal->external for field KLIBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_BSEGM-KLIBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSEGM-KLIBT.
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_BSEGM_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
AEDAT TYPE STRING,
MADAT TYPE STRING,
MANST TYPE STRING,
MANSP TYPE STRING,
MSCHL TYPE STRING,
HBKID TYPE STRING,
SPGRP TYPE STRING,
SPGRM TYPE STRING,
SPGRT TYPE STRING,
SPGRG TYPE STRING,
SPGRV TYPE STRING,
SPGRQ TYPE STRING,
SPGRS TYPE STRING,
SPGRC TYPE STRING,
ZLSPR TYPE STRING,
ZLSCH TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
ZFBDT TYPE STRING,
FDLEV TYPE STRING,
FDTAG TYPE STRING,
FDGRP TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
BVTYP TYPE STRING,
RSTGR TYPE STRING,
KLIBT TYPE STRING,
J_1NK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSEGM_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_BSEGM_STR-MANDT sy-vline 
WA_BSEGM_STR-BUKRS sy-vline 
WA_BSEGM_STR-BELNR sy-vline 
WA_BSEGM_STR-GJAHR sy-vline 
WA_BSEGM_STR-BUZEI sy-vline 
WA_BSEGM_STR-AEDAT sy-vline 
WA_BSEGM_STR-MADAT sy-vline 
WA_BSEGM_STR-MANST sy-vline 
WA_BSEGM_STR-MANSP sy-vline 
WA_BSEGM_STR-MSCHL sy-vline 
WA_BSEGM_STR-HBKID sy-vline 
WA_BSEGM_STR-SPGRP sy-vline 
WA_BSEGM_STR-SPGRM sy-vline 
WA_BSEGM_STR-SPGRT sy-vline 
WA_BSEGM_STR-SPGRG sy-vline 
WA_BSEGM_STR-SPGRV sy-vline 
WA_BSEGM_STR-SPGRQ sy-vline 
WA_BSEGM_STR-SPGRS sy-vline 
WA_BSEGM_STR-SPGRC sy-vline 
WA_BSEGM_STR-ZLSPR sy-vline 
WA_BSEGM_STR-ZLSCH sy-vline 
WA_BSEGM_STR-ZBD1T sy-vline 
WA_BSEGM_STR-ZBD2T sy-vline 
WA_BSEGM_STR-ZBD3T sy-vline 
WA_BSEGM_STR-ZBD1P sy-vline 
WA_BSEGM_STR-ZBD2P sy-vline 
WA_BSEGM_STR-ZFBDT sy-vline 
WA_BSEGM_STR-FDLEV sy-vline 
WA_BSEGM_STR-FDTAG sy-vline 
WA_BSEGM_STR-FDGRP sy-vline 
WA_BSEGM_STR-ZUONR sy-vline 
WA_BSEGM_STR-SGTXT sy-vline 
WA_BSEGM_STR-BVTYP sy-vline 
WA_BSEGM_STR-RSTGR sy-vline 
WA_BSEGM_STR-KLIBT sy-vline 
WA_BSEGM_STR-J_1NK sy-vline      INTO ld_text SEPARATED BY SPACE.

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