ABAP Select data from SAP table BMSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BMSEG
*  INTO TABLE @DATA(IT_BMSEG2).
*--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_BMSEG INDEX 1 INTO DATA(WA_BMSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BMSEG>-MAPPE = 1.
<BMSEG>-TCODE = 1.
<BMSEG>-BLDAT = 1.
<BMSEG>-BUDAT = 1.
<BMSEG>-XBLNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BMSEG-BKTXT, sy-vline,
  WA_BMSEG-FRBNR, sy-vline,
  WA_BMSEG-WEVER, sy-vline,
  WA_BMSEG-LDEST, sy-vline,
  WA_BMSEG-BWART, sy-vline,
  WA_BMSEG-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BMSEG 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_BMSEG 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_BMSEG INTO WA_BMSEG.


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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BMSEG-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BMSEG-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BMSEG-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BMSEG-ANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_BMSEG-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BMSEG-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_BMSEG-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BMSEG-SERNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BMSEG-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BMSEG-PRZNR.
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_BMSEG_STR, 
MAPPE TYPE STRING,
TCODE TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
FRBNR TYPE STRING,
WEVER TYPE STRING,
LDEST TYPE STRING,
BWART TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
INSMK TYPE STRING,
ZUSCH TYPE STRING,
SOBKZ TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
PLPLA TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
BPMNG TYPE STRING,
BPRME TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ELIKZ TYPE STRING,
SGTXT TYPE STRING,
EQUNR TYPE STRING,
WEMPF TYPE STRING,
ABLAD TYPE STRING,
KOKRS TYPE STRING,
PARGB TYPE STRING,
PARBU TYPE STRING,
KOSTL TYPE STRING,
PROJN TYPE STRING,
AUFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
KZEAR TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
UMCHA TYPE STRING,
UMZUS TYPE STRING,
UMBAR TYPE STRING,
UMSOK TYPE STRING,
WEANZ TYPE STRING,
GRUND TYPE STRING,
KONTO TYPE STRING,
EXWRT TYPE STRING,
XZGVH TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
GSBER TYPE STRING,
KSTRG TYPE STRING,
PAOBJNR TYPE STRING,
PRCTR TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
AUFPS TYPE STRING,
VPTNR TYPE STRING,
FIPOS TYPE STRING,
EXVKW TYPE STRING,
MHDAT TYPE STRING,
PSTYP TYPE STRING,
MTSNR TYPE STRING,
XABLN TYPE STRING,
SERNR TYPE STRING,
NO_CO_BLOC TYPE STRING,
XSTOR TYPE STRING,
LFBNR TYPE STRING,
LFPOS TYPE STRING,
LFBJA TYPE STRING,
BEMOT TYPE STRING,
VFDAT TYPE STRING,
HSDAT TYPE STRING,
RSART TYPE STRING,
VLIEF TYPE STRING,
VBELP TYPE STRING,
PRZNR TYPE STRING,
LSTAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BMSEG_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_BMSEG_STR-MAPPE sy-vline 
WA_BMSEG_STR-TCODE sy-vline 
WA_BMSEG_STR-BLDAT sy-vline 
WA_BMSEG_STR-BUDAT sy-vline 
WA_BMSEG_STR-XBLNR sy-vline 
WA_BMSEG_STR-BKTXT sy-vline 
WA_BMSEG_STR-FRBNR sy-vline 
WA_BMSEG_STR-WEVER sy-vline 
WA_BMSEG_STR-LDEST sy-vline 
WA_BMSEG_STR-BWART sy-vline 
WA_BMSEG_STR-MATNR sy-vline 
WA_BMSEG_STR-WERKS sy-vline 
WA_BMSEG_STR-LGORT sy-vline 
WA_BMSEG_STR-CHARG sy-vline 
WA_BMSEG_STR-INSMK sy-vline 
WA_BMSEG_STR-ZUSCH sy-vline 
WA_BMSEG_STR-SOBKZ sy-vline 
WA_BMSEG_STR-LIFNR sy-vline 
WA_BMSEG_STR-KUNNR sy-vline 
WA_BMSEG_STR-KDAUF sy-vline 
WA_BMSEG_STR-KDPOS sy-vline 
WA_BMSEG_STR-KDEIN sy-vline 
WA_BMSEG_STR-PLPLA sy-vline 
WA_BMSEG_STR-ERFMG sy-vline 
WA_BMSEG_STR-ERFME sy-vline 
WA_BMSEG_STR-BPMNG sy-vline 
WA_BMSEG_STR-BPRME sy-vline 
WA_BMSEG_STR-EBELN sy-vline 
WA_BMSEG_STR-EBELP sy-vline 
WA_BMSEG_STR-ELIKZ sy-vline 
WA_BMSEG_STR-SGTXT sy-vline 
WA_BMSEG_STR-EQUNR sy-vline 
WA_BMSEG_STR-WEMPF sy-vline 
WA_BMSEG_STR-ABLAD sy-vline 
WA_BMSEG_STR-KOKRS sy-vline 
WA_BMSEG_STR-PARGB sy-vline 
WA_BMSEG_STR-PARBU sy-vline 
WA_BMSEG_STR-KOSTL sy-vline 
WA_BMSEG_STR-PROJN sy-vline 
WA_BMSEG_STR-AUFNR sy-vline 
WA_BMSEG_STR-ANLN1 sy-vline 
WA_BMSEG_STR-ANLN2 sy-vline 
WA_BMSEG_STR-RSNUM sy-vline 
WA_BMSEG_STR-RSPOS sy-vline 
WA_BMSEG_STR-KZEAR sy-vline 
WA_BMSEG_STR-UMMAT sy-vline 
WA_BMSEG_STR-UMWRK sy-vline 
WA_BMSEG_STR-UMLGO sy-vline 
WA_BMSEG_STR-UMCHA sy-vline 
WA_BMSEG_STR-UMZUS sy-vline 
WA_BMSEG_STR-UMBAR sy-vline 
WA_BMSEG_STR-UMSOK sy-vline 
WA_BMSEG_STR-WEANZ sy-vline 
WA_BMSEG_STR-GRUND sy-vline 
WA_BMSEG_STR-KONTO sy-vline 
WA_BMSEG_STR-EXWRT sy-vline 
WA_BMSEG_STR-XZGVH sy-vline 
WA_BMSEG_STR-LGTYP sy-vline 
WA_BMSEG_STR-LGPLA sy-vline 
WA_BMSEG_STR-GSBER sy-vline 
WA_BMSEG_STR-KSTRG sy-vline 
WA_BMSEG_STR-PAOBJNR sy-vline 
WA_BMSEG_STR-PRCTR sy-vline 
WA_BMSEG_STR-PS_PSP_PNR sy-vline 
WA_BMSEG_STR-NPLNR sy-vline 
WA_BMSEG_STR-AUFPL sy-vline 
WA_BMSEG_STR-APLZL sy-vline 
WA_BMSEG_STR-AUFPS sy-vline 
WA_BMSEG_STR-VPTNR sy-vline 
WA_BMSEG_STR-FIPOS sy-vline 
WA_BMSEG_STR-EXVKW sy-vline 
WA_BMSEG_STR-MHDAT sy-vline 
WA_BMSEG_STR-PSTYP sy-vline 
WA_BMSEG_STR-MTSNR sy-vline 
WA_BMSEG_STR-XABLN sy-vline 
WA_BMSEG_STR-SERNR sy-vline 
WA_BMSEG_STR-NO_CO_BLOC sy-vline 
WA_BMSEG_STR-XSTOR sy-vline 
WA_BMSEG_STR-LFBNR sy-vline 
WA_BMSEG_STR-LFPOS sy-vline 
WA_BMSEG_STR-LFBJA sy-vline 
WA_BMSEG_STR-BEMOT sy-vline 
WA_BMSEG_STR-VFDAT sy-vline 
WA_BMSEG_STR-HSDAT sy-vline 
WA_BMSEG_STR-RSART sy-vline 
WA_BMSEG_STR-VLIEF sy-vline 
WA_BMSEG_STR-VBELP sy-vline 
WA_BMSEG_STR-PRZNR sy-vline 
WA_BMSEG_STR-LSTAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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