ABAP Select data from SAP table V_T5DWH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T5DWH 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_T5DWH. 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_T5DWH 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_T5DWH TYPE STANDARD TABLE OF V_T5DWH,
      WA_V_T5DWH TYPE V_T5DWH,
      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_T5DWH> TYPE V_T5DWH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T5DWH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T5DWH
  INTO TABLE IT_V_T5DWH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T5DWH
*  INTO TABLE @DATA(IT_V_T5DWH2).
*--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_T5DWH INDEX 1 INTO DATA(WA_V_T5DWH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T5DWH ASSIGNING <V_T5DWH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T5DWH>-MANDT = 1.
<V_T5DWH>-HANSP = 1.
<V_T5DWH>-WATYP = 1.
<V_T5DWH>-ENDDA = 1.
<V_T5DWH>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_V_T5DWH INTO WA_V_T5DWH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T5DWH-LGAMI, sy-vline,
  WA_V_T5DWH-LGAMA, sy-vline,
  WA_V_T5DWH-LGAWA, sy-vline,
  WA_V_T5DWH-LGARE, sy-vline,
  WA_V_T5DWH-DIRAB, sy-vline,
  WA_V_T5DWH-KUMUL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T5DWH 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_T5DWH 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_T5DWH INTO WA_V_T5DWH.


*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_T5DWH_STR, 
MANDT TYPE STRING,
HANSP TYPE STRING,
WATYP TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
LGAMI TYPE STRING,
LGAMA TYPE STRING,
LGAWA TYPE STRING,
LGARE TYPE STRING,
DIRAB TYPE STRING,
KUMUL TYPE STRING,
KUPER TYPE STRING,
KUANZ TYPE STRING,
ATEXT TYPE STRING,
WTEXT TYPE STRING,
KZUMW TYPE STRING,
BEKLA TYPE STRING,
DUWEG TYPE STRING,
KANAG TYPE STRING,
NVAEG TYPE STRING,
FP100 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T5DWH_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_T5DWH_STR-MANDT sy-vline 
WA_V_T5DWH_STR-HANSP sy-vline 
WA_V_T5DWH_STR-WATYP sy-vline 
WA_V_T5DWH_STR-ENDDA sy-vline 
WA_V_T5DWH_STR-BEGDA sy-vline 
WA_V_T5DWH_STR-LGAMI sy-vline 
WA_V_T5DWH_STR-LGAMA sy-vline 
WA_V_T5DWH_STR-LGAWA sy-vline 
WA_V_T5DWH_STR-LGARE sy-vline 
WA_V_T5DWH_STR-DIRAB sy-vline 
WA_V_T5DWH_STR-KUMUL sy-vline 
WA_V_T5DWH_STR-KUPER sy-vline 
WA_V_T5DWH_STR-KUANZ sy-vline 
WA_V_T5DWH_STR-ATEXT sy-vline 
WA_V_T5DWH_STR-WTEXT sy-vline 
WA_V_T5DWH_STR-KZUMW sy-vline 
WA_V_T5DWH_STR-BEKLA sy-vline 
WA_V_T5DWH_STR-DUWEG sy-vline 
WA_V_T5DWH_STR-KANAG sy-vline 
WA_V_T5DWH_STR-NVAEG sy-vline 
WA_V_T5DWH_STR-FP100 sy-vline      INTO ld_text SEPARATED BY SPACE.

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