ABAP Select data from SAP table V_T329D2 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_T329D2 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_T329D2. 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_T329D2 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_T329D2 TYPE STANDARD TABLE OF V_T329D2,
      WA_V_T329D2 TYPE V_T329D2,
      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_T329D2> TYPE V_T329D2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T329D2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T329D2
  INTO TABLE IT_V_T329D2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T329D2
*  INTO TABLE @DATA(IT_V_T329D22).
*--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_T329D2 INDEX 1 INTO DATA(WA_V_T329D22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T329D2 ASSIGNING <V_T329D2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T329D2>-MANDT = 1.
<V_T329D2>-LGNUM = 1.
<V_T329D2>-VLTYP = 1.
<V_T329D2>-NLTYP = 1.
<V_T329D2>-LDEST = 1.

ENDLOOP.

LOOP AT IT_V_T329D2 INTO WA_V_T329D2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T329D2-NIDRU, sy-vline,
  WA_V_T329D2-T331D, sy-vline,
  WA_V_T329D2-FORMU, sy-vline,
  WA_V_T329D2-SPOOL, sy-vline,
  WA_V_T329D2-NIDR2, sy-vline,
  WA_V_T329D2-FORM2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T329D2 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_T329D2 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_T329D2 INTO WA_V_T329D2.


*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 SPDEV, internal->external for field LDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_V_T329D2-LDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T329D2-LDEST.
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_T329D2_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
VLTYP TYPE STRING,
NLTYP TYPE STRING,
LDEST TYPE STRING,
NIDRU TYPE STRING,
T331D TYPE STRING,
FORMU TYPE STRING,
SPOOL TYPE STRING,
NIDR2 TYPE STRING,
FORM2 TYPE STRING,
SPOO2 TYPE STRING,
NIDR3 TYPE STRING,
FORM3 TYPE STRING,
SPOO3 TYPE STRING,
NIDR4 TYPE STRING,
FORM4 TYPE STRING,
SPOO4 TYPE STRING,
FORM7 TYPE STRING,
SPOO7 TYPE STRING,
NIDR7 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T329D2_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_T329D2_STR-MANDT sy-vline 
WA_V_T329D2_STR-LGNUM sy-vline 
WA_V_T329D2_STR-VLTYP sy-vline 
WA_V_T329D2_STR-NLTYP sy-vline 
WA_V_T329D2_STR-LDEST sy-vline 
WA_V_T329D2_STR-NIDRU sy-vline 
WA_V_T329D2_STR-T331D sy-vline 
WA_V_T329D2_STR-FORMU sy-vline 
WA_V_T329D2_STR-SPOOL sy-vline 
WA_V_T329D2_STR-NIDR2 sy-vline 
WA_V_T329D2_STR-FORM2 sy-vline 
WA_V_T329D2_STR-SPOO2 sy-vline 
WA_V_T329D2_STR-NIDR3 sy-vline 
WA_V_T329D2_STR-FORM3 sy-vline 
WA_V_T329D2_STR-SPOO3 sy-vline 
WA_V_T329D2_STR-NIDR4 sy-vline 
WA_V_T329D2_STR-FORM4 sy-vline 
WA_V_T329D2_STR-SPOO4 sy-vline 
WA_V_T329D2_STR-FORM7 sy-vline 
WA_V_T329D2_STR-SPOO7 sy-vline 
WA_V_T329D2_STR-NIDR7 sy-vline      INTO ld_text SEPARATED BY SPACE.

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