ABAP Select data from SAP table V_TWIC0100 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TWIC0100 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_TWIC0100. 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_TWIC0100 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_TWIC0100 TYPE STANDARD TABLE OF V_TWIC0100,
      WA_V_TWIC0100 TYPE V_TWIC0100,
      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_TWIC0100> TYPE V_TWIC0100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_TWIC0100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_TWIC0100
  INTO TABLE IT_V_TWIC0100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TWIC0100
*  INTO TABLE @DATA(IT_V_TWIC01002).
*--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_TWIC0100 INDEX 1 INTO DATA(WA_V_TWIC01002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_TWIC0100 ASSIGNING <V_TWIC0100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TWIC0100>-MANDT = 1.
<V_TWIC0100>-CSTOBJ = 1.
<V_TWIC0100>-CSTSCM = 1.
<V_TWIC0100>-TEXT = 1.
<V_TWIC0100>-FLAG_STRD = 1.

ENDLOOP.

LOOP AT IT_V_TWIC0100 INTO WA_V_TWIC0100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TWIC0100-REF_ID, sy-vline,
  WA_V_TWIC0100-ART_ID, sy-vline,
  WA_V_TWIC0100-BWART_ERF, sy-vline,
  WA_V_TWIC0100-BWART_STO, sy-vline,
  WA_V_TWIC0100-BWART_RUE, sy-vline,
  WA_V_TWIC0100-MHDKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TWIC0100 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_TWIC0100 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_TWIC0100 INTO WA_V_TWIC0100.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_V_TWIC0100_STR, 
MANDT TYPE STRING,
CSTOBJ TYPE STRING,
CSTSCM TYPE STRING,
TEXT TYPE STRING,
FLAG_STRD TYPE STRING,
REF_ID TYPE STRING,
ART_ID TYPE STRING,
BWART_ERF TYPE STRING,
BWART_STO TYPE STRING,
BWART_RUE TYPE STRING,
MHDKZ TYPE STRING,
DT_POS TYPE STRING,
DT_VERS TYPE STRING,
BWART_RUE_O TYPE STRING,
REST_KZ TYPE STRING,
BWART_UML TYPE STRING,
GMCODE TYPE STRING,
BWART_EINL TYPE STRING,
BWART_AUS TYPE STRING,
BWART_ZUS TYPE STRING,
BWART_ZUS_KZ TYPE STRING,
VELE_KZ TYPE STRING,
BWART_KOS_LIE TYPE STRING,
BWART_SPERR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TWIC0100_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_TWIC0100_STR-MANDT sy-vline 
WA_V_TWIC0100_STR-CSTOBJ sy-vline 
WA_V_TWIC0100_STR-CSTSCM sy-vline 
WA_V_TWIC0100_STR-TEXT sy-vline 
WA_V_TWIC0100_STR-FLAG_STRD sy-vline 
WA_V_TWIC0100_STR-REF_ID sy-vline 
WA_V_TWIC0100_STR-ART_ID sy-vline 
WA_V_TWIC0100_STR-BWART_ERF sy-vline 
WA_V_TWIC0100_STR-BWART_STO sy-vline 
WA_V_TWIC0100_STR-BWART_RUE sy-vline 
WA_V_TWIC0100_STR-MHDKZ sy-vline 
WA_V_TWIC0100_STR-DT_POS sy-vline 
WA_V_TWIC0100_STR-DT_VERS sy-vline 
WA_V_TWIC0100_STR-BWART_RUE_O sy-vline 
WA_V_TWIC0100_STR-REST_KZ sy-vline 
WA_V_TWIC0100_STR-BWART_UML sy-vline 
WA_V_TWIC0100_STR-GMCODE sy-vline 
WA_V_TWIC0100_STR-BWART_EINL sy-vline 
WA_V_TWIC0100_STR-BWART_AUS sy-vline 
WA_V_TWIC0100_STR-BWART_ZUS sy-vline 
WA_V_TWIC0100_STR-BWART_ZUS_KZ sy-vline 
WA_V_TWIC0100_STR-VELE_KZ sy-vline 
WA_V_TWIC0100_STR-BWART_KOS_LIE sy-vline 
WA_V_TWIC0100_STR-BWART_SPERR sy-vline      INTO ld_text SEPARATED BY SPACE.

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