ABAP Select data from SAP table QDSV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QDSV
*  INTO TABLE @DATA(IT_QDSV2).
*--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_QDSV INDEX 1 INTO DATA(WA_QDSV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QDSV>-MANDT = 1.
<QDSV>-STICHPRVER = 1.
<QDSV>-STICHPRART = 1.
<QDSV>-BEWERTMOD = 1.
<QDSV>-KZOHI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QDSV-KZUMFS, sy-vline,
  WA_QDSV-KZNOCUT, sy-vline,
  WA_QDSV-STPRANZ, sy-vline,
  WA_QDSV-STPRUMF, sy-vline,
  WA_QDSV-ANNAHMEZ, sy-vline,
  WA_QDSV-KFAKTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QDSV 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_QDSV 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_QDSV INTO WA_QDSV.


*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_QDSV_STR, 
MANDT TYPE STRING,
STICHPRVER TYPE STRING,
STICHPRART TYPE STRING,
BEWERTMOD TYPE STRING,
KZOHI TYPE STRING,
KZUMFS TYPE STRING,
KZNOCUT TYPE STRING,
STPRANZ TYPE STRING,
STPRUMF TYPE STRING,
ANNAHMEZ TYPE STRING,
KFAKTOR TYPE STRING,
KFAKTORNI TYPE STRING,
KZNVWSV TYPE STRING,
KZVWSVPL TYPE STRING,
FBKEY TYPE STRING,
FBKEYMFS TYPE STRING,
STPRPLAN TYPE STRING,
PRSCHAERFE TYPE STRING,
AQLWERT TYPE STRING,
PROZUMF TYPE STRING,
PROZUMFNI TYPE STRING,
PROZAZL TYPE STRING,
PROZAZLNI TYPE STRING,
ERSTELLER TYPE STRING,
AENDERER TYPE STRING,
ERSTELLDAT TYPE STRING,
AENDERDAT TYPE STRING,
KZRAST TYPE STRING,
RASTER TYPE STRING,
QRKART TYPE STRING,
DUMMY_QDSV_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QDSV_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_QDSV_STR-MANDT sy-vline 
WA_QDSV_STR-STICHPRVER sy-vline 
WA_QDSV_STR-STICHPRART sy-vline 
WA_QDSV_STR-BEWERTMOD sy-vline 
WA_QDSV_STR-KZOHI sy-vline 
WA_QDSV_STR-KZUMFS sy-vline 
WA_QDSV_STR-KZNOCUT sy-vline 
WA_QDSV_STR-STPRANZ sy-vline 
WA_QDSV_STR-STPRUMF sy-vline 
WA_QDSV_STR-ANNAHMEZ sy-vline 
WA_QDSV_STR-KFAKTOR sy-vline 
WA_QDSV_STR-KFAKTORNI sy-vline 
WA_QDSV_STR-KZNVWSV sy-vline 
WA_QDSV_STR-KZVWSVPL sy-vline 
WA_QDSV_STR-FBKEY sy-vline 
WA_QDSV_STR-FBKEYMFS sy-vline 
WA_QDSV_STR-STPRPLAN sy-vline 
WA_QDSV_STR-PRSCHAERFE sy-vline 
WA_QDSV_STR-AQLWERT sy-vline 
WA_QDSV_STR-PROZUMF sy-vline 
WA_QDSV_STR-PROZUMFNI sy-vline 
WA_QDSV_STR-PROZAZL sy-vline 
WA_QDSV_STR-PROZAZLNI sy-vline 
WA_QDSV_STR-ERSTELLER sy-vline 
WA_QDSV_STR-AENDERER sy-vline 
WA_QDSV_STR-ERSTELLDAT sy-vline 
WA_QDSV_STR-AENDERDAT sy-vline 
WA_QDSV_STR-KZRAST sy-vline 
WA_QDSV_STR-RASTER sy-vline 
WA_QDSV_STR-QRKART sy-vline 
WA_QDSV_STR-DUMMY_QDSV_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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