ABAP Select data from SAP table DTVALUE_BW_V into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTVALUE_BW_V
*  INTO TABLE @DATA(IT_DTVALUE_BW_V2).
*--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_DTVALUE_BW_V INDEX 1 INTO DATA(WA_DTVALUE_BW_V2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTVALUE_BW_V>-MANDT = 1.
<DTVALUE_BW_V>-DTRNU = 1.
<DTVALUE_BW_V>-ARBID = 1.
<DTVALUE_BW_V>-OBJTY = 1.
<DTVALUE_BW_V>-KAPID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTVALUE_BW_V-DTDAT, sy-vline,
  WA_DTVALUE_BW_V-SCHNR, sy-vline,
  WA_DTVALUE_BW_V-WERKS, sy-vline,
  WA_DTVALUE_BW_V-ARBPL, sy-vline,
  WA_DTVALUE_BW_V-DTELI, sy-vline,
  WA_DTVALUE_BW_V-KEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTVALUE_BW_V 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_DTVALUE_BW_V 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_DTVALUE_BW_V INTO WA_DTVALUE_BW_V.


*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 CUNIT, internal->external for field KEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DTVALUE_BW_V-KEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTVALUE_BW_V-KEINH.
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_DTVALUE_BW_V_STR, 
MANDT TYPE STRING,
DTRNU TYPE STRING,
ARBID TYPE STRING,
OBJTY TYPE STRING,
KAPID TYPE STRING,
DTDAT TYPE STRING,
SCHNR TYPE STRING,
WERKS TYPE STRING,
ARBPL TYPE STRING,
DTELI TYPE STRING,
KEINH TYPE STRING,
DTDER TYPE STRING,
TEAM TYPE STRING,
KAPAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTVALUE_BW_V_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_DTVALUE_BW_V_STR-MANDT sy-vline 
WA_DTVALUE_BW_V_STR-DTRNU sy-vline 
WA_DTVALUE_BW_V_STR-ARBID sy-vline 
WA_DTVALUE_BW_V_STR-OBJTY sy-vline 
WA_DTVALUE_BW_V_STR-KAPID sy-vline 
WA_DTVALUE_BW_V_STR-DTDAT sy-vline 
WA_DTVALUE_BW_V_STR-SCHNR sy-vline 
WA_DTVALUE_BW_V_STR-WERKS sy-vline 
WA_DTVALUE_BW_V_STR-ARBPL sy-vline 
WA_DTVALUE_BW_V_STR-DTELI sy-vline 
WA_DTVALUE_BW_V_STR-KEINH sy-vline 
WA_DTVALUE_BW_V_STR-DTDER sy-vline 
WA_DTVALUE_BW_V_STR-TEAM sy-vline 
WA_DTVALUE_BW_V_STR-KAPAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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