ABAP Select data from SAP table V_TEWOCODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TEWOCODE 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_TEWOCODE. 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_TEWOCODE 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_TEWOCODE TYPE STANDARD TABLE OF V_TEWOCODE,
      WA_V_TEWOCODE TYPE V_TEWOCODE,
      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_TEWOCODE> TYPE V_TEWOCODE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TEWOCODE
*  INTO TABLE @DATA(IT_V_TEWOCODE2).
*--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_TEWOCODE INDEX 1 INTO DATA(WA_V_TEWOCODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TEWOCODE>-CLIENT = 1.
<V_TEWOCODE>-ORDER_CODE = 1.
<V_TEWOCODE>-IWERK = 1.
<V_TEWOCODE>-SVOBJ_ID = 1.
<V_TEWOCODE>-SVOBJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TEWOCODE-AUART, sy-vline,
  WA_V_TEWOCODE-VAPLZ, sy-vline,
  WA_V_TEWOCODE-VAWRK, sy-vline,
  WA_V_TEWOCODE-MANDT, sy-vline,
  WA_V_TEWOCODE-GSBER, sy-vline,
  WA_V_TEWOCODE-STDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TEWOCODE 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_TEWOCODE 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_TEWOCODE INTO WA_V_TEWOCODE.


*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 STDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_TEWOCODE-STDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TEWOCODE-STDNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field BZGSERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_V_TEWOCODE-BZGSERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TEWOCODE-BZGSERNR.
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_TEWOCODE_STR, 
CLIENT TYPE STRING,
ORDER_CODE TYPE STRING,
IWERK TYPE STRING,
SVOBJ_ID TYPE STRING,
SVOBJ TYPE STRING,
AUART TYPE STRING,
VAPLZ TYPE STRING,
VAWRK TYPE STRING,
MANDT TYPE STRING,
GSBER TYPE STRING,
STDNR TYPE STRING,
STDAL TYPE STRING,
PLNTY TYPE STRING,
BZGSART TYPE STRING,
BZGSOBJTYP TYPE STRING,
BZGSOBJ TYPE STRING,
BZGSERNR TYPE STRING,
ILART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TEWOCODE_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_TEWOCODE_STR-CLIENT sy-vline 
WA_V_TEWOCODE_STR-ORDER_CODE sy-vline 
WA_V_TEWOCODE_STR-IWERK sy-vline 
WA_V_TEWOCODE_STR-SVOBJ_ID sy-vline 
WA_V_TEWOCODE_STR-SVOBJ sy-vline 
WA_V_TEWOCODE_STR-AUART sy-vline 
WA_V_TEWOCODE_STR-VAPLZ sy-vline 
WA_V_TEWOCODE_STR-VAWRK sy-vline 
WA_V_TEWOCODE_STR-MANDT sy-vline 
WA_V_TEWOCODE_STR-GSBER sy-vline 
WA_V_TEWOCODE_STR-STDNR sy-vline 
WA_V_TEWOCODE_STR-STDAL sy-vline 
WA_V_TEWOCODE_STR-PLNTY sy-vline 
WA_V_TEWOCODE_STR-BZGSART sy-vline 
WA_V_TEWOCODE_STR-BZGSOBJTYP sy-vline 
WA_V_TEWOCODE_STR-BZGSOBJ sy-vline 
WA_V_TEWOCODE_STR-BZGSERNR sy-vline 
WA_V_TEWOCODE_STR-ILART sy-vline      INTO ld_text SEPARATED BY SPACE.

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