ABAP Select data from SAP table LSEG_VB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSEG_VB
*  INTO TABLE @DATA(IT_LSEG_VB2).
*--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_LSEG_VB INDEX 1 INTO DATA(WA_LSEG_VB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSEG_VB>-MANDT = 1.
<LSEG_VB>-LGNUM = 1.
<LSEG_VB>-LBELN = 1.
<LSEG_VB>-LBPOS = 1.
<LSEG_VB>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSEG_VB-WERKS, sy-vline,
  WA_LSEG_VB-LGORT, sy-vline,
  WA_LSEG_VB-CHARG, sy-vline,
  WA_LSEG_VB-BESTQ, sy-vline,
  WA_LSEG_VB-SOBKZ, sy-vline,
  WA_LSEG_VB-SONUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSEG_VB 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_LSEG_VB 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_LSEG_VB INTO WA_LSEG_VB.


*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_LSEG_VB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSEG_VB-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LSEG_VB-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSEG_VB-GEWEI.
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_LSEG_VB_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
LBELN TYPE STRING,
LBPOS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
BWART TYPE STRING,
BDATU TYPE STRING,
BZEIT TYPE STRING,
LVBTP TYPE STRING,
LVBNR TYPE STRING,
LVBPS TYPE STRING,
LENUM TYPE STRING,
LETYP TYPE STRING,
XHUPF TYPE STRING,
NOSTK TYPE STRING,
ERNAM TYPE STRING,
SGT_SCAT TYPE STRING,
LQNUM TYPE STRING,
LANUM TYPE STRING,
KZDYN TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
STEIN TYPE STRING,
QKAPV TYPE STRING,
LKAPA TYPE STRING,
KKAPV TYPE STRING,
MAXLE TYPE STRING,
PLPOS TYPE STRING,
LDUMM TYPE STRING,
KZEAR TYPE STRING,
SUMME TYPE STRING,
WDATU_BSUEB TYPE STRING,
VFDAT_BSUEB TYPE STRING,
ZEUGN_BSUEB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSEG_VB_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_LSEG_VB_STR-MANDT sy-vline 
WA_LSEG_VB_STR-LGNUM sy-vline 
WA_LSEG_VB_STR-LBELN sy-vline 
WA_LSEG_VB_STR-LBPOS sy-vline 
WA_LSEG_VB_STR-MATNR sy-vline 
WA_LSEG_VB_STR-WERKS sy-vline 
WA_LSEG_VB_STR-LGORT sy-vline 
WA_LSEG_VB_STR-CHARG sy-vline 
WA_LSEG_VB_STR-BESTQ sy-vline 
WA_LSEG_VB_STR-SOBKZ sy-vline 
WA_LSEG_VB_STR-SONUM sy-vline 
WA_LSEG_VB_STR-MENGE sy-vline 
WA_LSEG_VB_STR-MEINS sy-vline 
WA_LSEG_VB_STR-LGTYP sy-vline 
WA_LSEG_VB_STR-LGPLA sy-vline 
WA_LSEG_VB_STR-BWART sy-vline 
WA_LSEG_VB_STR-BDATU sy-vline 
WA_LSEG_VB_STR-BZEIT sy-vline 
WA_LSEG_VB_STR-LVBTP sy-vline 
WA_LSEG_VB_STR-LVBNR sy-vline 
WA_LSEG_VB_STR-LVBPS sy-vline 
WA_LSEG_VB_STR-LENUM sy-vline 
WA_LSEG_VB_STR-LETYP sy-vline 
WA_LSEG_VB_STR-XHUPF sy-vline 
WA_LSEG_VB_STR-NOSTK sy-vline 
WA_LSEG_VB_STR-ERNAM sy-vline 
WA_LSEG_VB_STR-SGT_SCAT sy-vline 
WA_LSEG_VB_STR-LQNUM sy-vline 
WA_LSEG_VB_STR-LANUM sy-vline 
WA_LSEG_VB_STR-KZDYN sy-vline 
WA_LSEG_VB_STR-BRGEW sy-vline 
WA_LSEG_VB_STR-GEWEI sy-vline 
WA_LSEG_VB_STR-STEIN sy-vline 
WA_LSEG_VB_STR-QKAPV sy-vline 
WA_LSEG_VB_STR-LKAPA sy-vline 
WA_LSEG_VB_STR-KKAPV sy-vline 
WA_LSEG_VB_STR-MAXLE sy-vline 
WA_LSEG_VB_STR-PLPOS sy-vline 
WA_LSEG_VB_STR-LDUMM sy-vline 
WA_LSEG_VB_STR-KZEAR sy-vline 
WA_LSEG_VB_STR-SUMME sy-vline 
WA_LSEG_VB_STR-WDATU_BSUEB sy-vline 
WA_LSEG_VB_STR-VFDAT_BSUEB sy-vline 
WA_LSEG_VB_STR-ZEUGN_BSUEB sy-vline      INTO ld_text SEPARATED BY SPACE.

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