ABAP Select data from SAP table V_TVRAB into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TVRAB 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 V_TVRAB. 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 V_TVRAB 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_V_TVRAB TYPE STANDARD TABLE OF V_TVRAB,
      WA_V_TVRAB TYPE V_TVRAB,
      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: <V_TVRAB> TYPE V_TVRAB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TVRAB
*  INTO TABLE @DATA(IT_V_TVRAB2).
*--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_V_TVRAB INDEX 1 INTO DATA(WA_V_TVRAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TVRAB>-MANDT = 1.
<V_TVRAB>-ROUTE = 1.
<V_TVRAB>-ABNUM = 1.
<V_TVRAB>-ANFRF = 1.
<V_TVRAB>-ABCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TVRAB-KNANF, sy-vline,
  WA_V_TVRAB-KNEND, sy-vline,
  WA_V_TVRAB-KNUZL, sy-vline,
  WA_V_TVRAB-GESZTD, sy-vline,
  WA_V_TVRAB-FAHZTD, sy-vline,
  WA_V_TVRAB-DISTZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TVRAB 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_V_TVRAB 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_V_TVRAB INTO WA_V_TVRAB.


*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 TSTRG, internal->external for field GESZTD
CALL FUNCTION 'CONVERSION_EXIT_TSTRG_OUTPUT'
  EXPORTING
    input =                      WA_V_TVRAB-GESZTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TVRAB-GESZTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field FAHZTD
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_V_TVRAB-FAHZTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TVRAB-FAHZTD.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field TDLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_TVRAB-TDLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TVRAB-TDLNR.
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_V_TVRAB_STR, 
MANDT TYPE STRING,
ROUTE TYPE STRING,
ABNUM TYPE STRING,
ANFRF TYPE STRING,
ABCAT TYPE STRING,
KNANF TYPE STRING,
KNEND TYPE STRING,
KNUZL TYPE STRING,
GESZTD TYPE STRING,
FAHZTD TYPE STRING,
DISTZ TYPE STRING,
MEDST TYPE STRING,
TDLNR TYPE STRING,
LAUFK TYPE STRING,
SDABW TYPE STRING,
TSTYP TYPE STRING,
SPFBK TYPE STRING,
SPZST TYPE STRING,
VSART TYPE STRING,
FRKRL TYPE STRING,
SKALSM TYPE STRING,
BEZEI TYPE STRING,
OIJ_TSYST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TVRAB_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_V_TVRAB_STR-MANDT sy-vline 
WA_V_TVRAB_STR-ROUTE sy-vline 
WA_V_TVRAB_STR-ABNUM sy-vline 
WA_V_TVRAB_STR-ANFRF sy-vline 
WA_V_TVRAB_STR-ABCAT sy-vline 
WA_V_TVRAB_STR-KNANF sy-vline 
WA_V_TVRAB_STR-KNEND sy-vline 
WA_V_TVRAB_STR-KNUZL sy-vline 
WA_V_TVRAB_STR-GESZTD sy-vline 
WA_V_TVRAB_STR-FAHZTD sy-vline 
WA_V_TVRAB_STR-DISTZ sy-vline 
WA_V_TVRAB_STR-MEDST sy-vline 
WA_V_TVRAB_STR-TDLNR sy-vline 
WA_V_TVRAB_STR-LAUFK sy-vline 
WA_V_TVRAB_STR-SDABW sy-vline 
WA_V_TVRAB_STR-TSTYP sy-vline 
WA_V_TVRAB_STR-SPFBK sy-vline 
WA_V_TVRAB_STR-SPZST sy-vline 
WA_V_TVRAB_STR-VSART sy-vline 
WA_V_TVRAB_STR-FRKRL sy-vline 
WA_V_TVRAB_STR-SKALSM sy-vline 
WA_V_TVRAB_STR-BEZEI sy-vline 
WA_V_TVRAB_STR-OIJ_TSYST sy-vline      INTO ld_text SEPARATED BY SPACE.

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