ABAP Select data from SAP table VDZV into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VDZV 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 VDZV. 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 VDZV 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_VDZV TYPE STANDARD TABLE OF VDZV,
      WA_VDZV TYPE VDZV,
      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: <VDZV> TYPE VDZV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDZV
*  INTO TABLE @DATA(IT_VDZV2).
*--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_VDZV INDEX 1 INTO DATA(WA_VDZV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDZV>-MANDT = 1.
<VDZV>-BUKRS = 1.
<VDZV>-RFHA = 1.
<VDZV>-SSIGN = 1.
<VDZV>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDZV-DZVERB, sy-vline,
  WA_VDZV-SBEWART, sy-vline,
  WA_VDZV-CRUSER, sy-vline,
  WA_VDZV-DCRDAT, sy-vline,
  WA_VDZV-TCRTIM, sy-vline,
  WA_VDZV-UPUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDZV 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_VDZV 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_VDZV INTO WA_VDZV.


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

*Conversion exit ALPHA, internal->external for field RPZAHL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VDZV-RPZAHL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDZV-RPZAHL.
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_VDZV_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RFHA TYPE STRING,
SSIGN TYPE STRING,
WAERS TYPE STRING,
DZVERB TYPE STRING,
SBEWART TYPE STRING,
CRUSER TYPE STRING,
DCRDAT TYPE STRING,
TCRTIM TYPE STRING,
UPUSER TYPE STRING,
DUPDAT TYPE STRING,
TUPTIM TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
RPZAHL TYPE STRING,
RPBANK TYPE STRING,
SZART TYPE STRING,
ZLSCH TYPE STRING,
UZAWE TYPE STRING,
SPAYRQ TYPE STRING,
SPRSNG TYPE STRING,
SPRGRD TYPE STRING,
SCSPAY TYPE STRING,
ZWELS TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDZV_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_VDZV_STR-MANDT sy-vline 
WA_VDZV_STR-BUKRS sy-vline 
WA_VDZV_STR-RFHA sy-vline 
WA_VDZV_STR-SSIGN sy-vline 
WA_VDZV_STR-WAERS sy-vline 
WA_VDZV_STR-DZVERB sy-vline 
WA_VDZV_STR-SBEWART sy-vline 
WA_VDZV_STR-CRUSER sy-vline 
WA_VDZV_STR-DCRDAT sy-vline 
WA_VDZV_STR-TCRTIM sy-vline 
WA_VDZV_STR-UPUSER sy-vline 
WA_VDZV_STR-DUPDAT sy-vline 
WA_VDZV_STR-TUPTIM sy-vline 
WA_VDZV_STR-HBKID sy-vline 
WA_VDZV_STR-HKTID sy-vline 
WA_VDZV_STR-RPZAHL sy-vline 
WA_VDZV_STR-RPBANK sy-vline 
WA_VDZV_STR-SZART sy-vline 
WA_VDZV_STR-ZLSCH sy-vline 
WA_VDZV_STR-UZAWE sy-vline 
WA_VDZV_STR-SPAYRQ sy-vline 
WA_VDZV_STR-SPRSNG sy-vline 
WA_VDZV_STR-SPRGRD sy-vline 
WA_VDZV_STR-SCSPAY sy-vline 
WA_VDZV_STR-ZWELS sy-vline 
WA_VDZV_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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