ABAP Select data from SAP table QVDM 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 QVDM 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 QVDM. 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 QVDM 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_QVDM TYPE STANDARD TABLE OF QVDM,
      WA_QVDM TYPE QVDM,
      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: <QVDM> TYPE QVDM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QVDM
*  INTO TABLE @DATA(IT_QVDM2).
*--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_QVDM INDEX 1 INTO DATA(WA_QVDM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QVDM>-MANDT = 1.
<QVDM>-KUNNR = 1.
<QVDM>-VKORG = 1.
<QVDM>-MATNR = 1.
<QVDM>-REVLV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QVDM-ERSTELLER, sy-vline,
  WA_QVDM-ERSTELLDAT, sy-vline,
  WA_QVDM-AENDERER, sy-vline,
  WA_QVDM-AENDERDAT, sy-vline,
  WA_QVDM-LTEXTKZ, sy-vline,
  WA_QVDM-SPRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QVDM 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_QVDM 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_QVDM INTO WA_QVDM.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QVDM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QVDM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QVDM-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QVDM-REVLV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_QVDM-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QVDM-SPRAS.
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_QVDM_STR, 
MANDT TYPE STRING,
KUNNR TYPE STRING,
VKORG TYPE STRING,
MATNR TYPE STRING,
REVLV TYPE STRING,
ERSTELLER TYPE STRING,
ERSTELLDAT TYPE STRING,
AENDERER TYPE STRING,
AENDERDAT TYPE STRING,
LTEXTKZ TYPE STRING,
SPRAS TYPE STRING,
INSPBYDEBI TYPE STRING,
INSPATDEBI TYPE STRING,
ABRVW TYPE STRING,
INFO10 TYPE STRING,
INFO20 TYPE STRING,
INFO40 TYPE STRING,
LOEKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QVDM_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_QVDM_STR-MANDT sy-vline 
WA_QVDM_STR-KUNNR sy-vline 
WA_QVDM_STR-VKORG sy-vline 
WA_QVDM_STR-MATNR sy-vline 
WA_QVDM_STR-REVLV sy-vline 
WA_QVDM_STR-ERSTELLER sy-vline 
WA_QVDM_STR-ERSTELLDAT sy-vline 
WA_QVDM_STR-AENDERER sy-vline 
WA_QVDM_STR-AENDERDAT sy-vline 
WA_QVDM_STR-LTEXTKZ sy-vline 
WA_QVDM_STR-SPRAS sy-vline 
WA_QVDM_STR-INSPBYDEBI sy-vline 
WA_QVDM_STR-INSPATDEBI sy-vline 
WA_QVDM_STR-ABRVW sy-vline 
WA_QVDM_STR-INFO10 sy-vline 
WA_QVDM_STR-INFO20 sy-vline 
WA_QVDM_STR-INFO40 sy-vline 
WA_QVDM_STR-LOEKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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