ABAP Select data from SAP table VTB_ST2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VTB_ST2 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 VTB_ST2. 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 VTB_ST2 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_VTB_ST2 TYPE STANDARD TABLE OF VTB_ST2,
      WA_VTB_ST2 TYPE VTB_ST2,
      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: <VTB_ST2> TYPE VTB_ST2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VTB_ST2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VTB_ST2
  INTO TABLE IT_VTB_ST2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTB_ST2
*  INTO TABLE @DATA(IT_VTB_ST22).
*--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_VTB_ST2 INDEX 1 INTO DATA(WA_VTB_ST22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VTB_ST2 ASSIGNING <VTB_ST2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTB_ST2>-MANDT = 1.
<VTB_ST2>-PARTNR = 1.
<VTB_ST2>-BUKRS = 1.
<VTB_ST2>-RANTYP = 1.
<VTB_ST2>-SANLF = 1.

ENDLOOP.

LOOP AT IT_VTB_ST2 INTO WA_VTB_ST2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTB_ST2-SGSART, sy-vline,
  WA_VTB_ST2-SFHAART, sy-vline,
  WA_VTB_ST2-CORTYP, sy-vline,
  WA_VTB_ST2-DCRDAT, sy-vline,
  WA_VTB_ST2-TCRTIM, sy-vline,
  WA_VTB_ST2-CRUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTB_ST2 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_VTB_ST2 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_VTB_ST2 INTO WA_VTB_ST2.


*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 PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTB_ST2-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTB_ST2-PARTNR.
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_VTB_ST2_STR, 
MANDT TYPE STRING,
PARTNR TYPE STRING,
BUKRS TYPE STRING,
RANTYP TYPE STRING,
SANLF TYPE STRING,
SGSART TYPE STRING,
SFHAART TYPE STRING,
CORTYP TYPE STRING,
DCRDAT TYPE STRING,
TCRTIM TYPE STRING,
CRUSER TYPE STRING,
DUPDAT TYPE STRING,
TUPTIM TYPE STRING,
UPUSER TYPE STRING,
CORR_PR TYPE STRING,
CORR_FX TYPE STRING,
CORR_SW TYPE STRING,
CORR_ID TYPE STRING,
CORR_EM TYPE STRING,
CORR_AD TYPE STRING,
CORR_STAT TYPE STRING,
SOBLRECONF TYPE STRING,
SNODUNNING TYPE STRING,
REPL_RE TYPE STRING,
REPL_TI TYPE STRING,
REPL_KU TYPE STRING,
XPARTNR TYPE STRING,
XRANTYP TYPE STRING,
XSANLF TYPE STRING,
XSGSART TYPE STRING,
XSFHAART TYPE STRING,
XCORTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTB_ST2_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_VTB_ST2_STR-MANDT sy-vline 
WA_VTB_ST2_STR-PARTNR sy-vline 
WA_VTB_ST2_STR-BUKRS sy-vline 
WA_VTB_ST2_STR-RANTYP sy-vline 
WA_VTB_ST2_STR-SANLF sy-vline 
WA_VTB_ST2_STR-SGSART sy-vline 
WA_VTB_ST2_STR-SFHAART sy-vline 
WA_VTB_ST2_STR-CORTYP sy-vline 
WA_VTB_ST2_STR-DCRDAT sy-vline 
WA_VTB_ST2_STR-TCRTIM sy-vline 
WA_VTB_ST2_STR-CRUSER sy-vline 
WA_VTB_ST2_STR-DUPDAT sy-vline 
WA_VTB_ST2_STR-TUPTIM sy-vline 
WA_VTB_ST2_STR-UPUSER sy-vline 
WA_VTB_ST2_STR-CORR_PR sy-vline 
WA_VTB_ST2_STR-CORR_FX sy-vline 
WA_VTB_ST2_STR-CORR_SW sy-vline 
WA_VTB_ST2_STR-CORR_ID sy-vline 
WA_VTB_ST2_STR-CORR_EM sy-vline 
WA_VTB_ST2_STR-CORR_AD sy-vline 
WA_VTB_ST2_STR-CORR_STAT sy-vline 
WA_VTB_ST2_STR-SOBLRECONF sy-vline 
WA_VTB_ST2_STR-SNODUNNING sy-vline 
WA_VTB_ST2_STR-REPL_RE sy-vline 
WA_VTB_ST2_STR-REPL_TI sy-vline 
WA_VTB_ST2_STR-REPL_KU sy-vline 
WA_VTB_ST2_STR-XPARTNR sy-vline 
WA_VTB_ST2_STR-XRANTYP sy-vline 
WA_VTB_ST2_STR-XSANLF sy-vline 
WA_VTB_ST2_STR-XSGSART sy-vline 
WA_VTB_ST2_STR-XSFHAART sy-vline 
WA_VTB_ST2_STR-XCORTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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