ABAP Select data from SAP table QDSE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QDSE
*  INTO TABLE @DATA(IT_QDSE2).
*--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_QDSE INDEX 1 INTO DATA(WA_QDSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QDSE>-VORGLFNR = 1.
<QDSE>-VORNR = 1.
<QDSE>-MERKNR = 1.
<QDSE>-PPLNKN = 1.
<QDSE>-PLNFL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QDSE-VPLTY, sy-vline,
  WA_QDSE-VPLNR, sy-vline,
  WA_QDSE-VPLAL, sy-vline,
  WA_QDSE-VPLFL, sy-vline,
  WA_QDSE-VPLNKN, sy-vline,
  WA_QDSE-DYNREGEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QDSE 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_QDSE 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_QDSE INTO WA_QDSE.


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

*Conversion exit ALPHA, internal->external for field PLNFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QDSE-PLNFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDSE-PLNFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QDSE-VPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDSE-VPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VPLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QDSE-VPLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDSE-VPLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VPLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QDSE-VPLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDSE-VPLFL.
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_QDSE_STR, 
VORGLFNR TYPE STRING,
VORNR TYPE STRING,
MERKNR TYPE STRING,
PPLNKN TYPE STRING,
PLNFL TYPE STRING,
VPLTY TYPE STRING,
VPLNR TYPE STRING,
VPLAL TYPE STRING,
VPLFL TYPE STRING,
VPLNKN TYPE STRING,
DYNREGEL TYPE STRING,
KZDYNAUT TYPE STRING,
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,
KZATTRFE TYPE STRING,
KZATTRFZ TYPE STRING,
KZVARS TYPE STRING,
KZVARSIGM TYPE STRING,
KZCOD TYPE STRING,
KZMAN TYPE STRING,
KZQRK TYPE STRING,
KZAUS TYPE STRING,
KZCNULL TYPE STRING,
KZKNULL TYPE STRING,
KZOHNEBEWP TYPE STRING,
KZTAB TYPE STRING,
KZANT TYPE STRING,
KZFIX TYPE STRING,
KZ100 TYPE STRING,
KZDYHIREL TYPE STRING,
KZSKIP TYPE STRING,
KZKEINSKIP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QDSE_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_QDSE_STR-VORGLFNR sy-vline 
WA_QDSE_STR-VORNR sy-vline 
WA_QDSE_STR-MERKNR sy-vline 
WA_QDSE_STR-PPLNKN sy-vline 
WA_QDSE_STR-PLNFL sy-vline 
WA_QDSE_STR-VPLTY sy-vline 
WA_QDSE_STR-VPLNR sy-vline 
WA_QDSE_STR-VPLAL sy-vline 
WA_QDSE_STR-VPLFL sy-vline 
WA_QDSE_STR-VPLNKN sy-vline 
WA_QDSE_STR-DYNREGEL sy-vline 
WA_QDSE_STR-KZDYNAUT sy-vline 
WA_QDSE_STR-MANDT sy-vline 
WA_QDSE_STR-STICHPRVER sy-vline 
WA_QDSE_STR-STICHPRART sy-vline 
WA_QDSE_STR-BEWERTMOD sy-vline 
WA_QDSE_STR-KZOHI sy-vline 
WA_QDSE_STR-KZUMFS sy-vline 
WA_QDSE_STR-KZNOCUT sy-vline 
WA_QDSE_STR-STPRANZ sy-vline 
WA_QDSE_STR-STPRUMF sy-vline 
WA_QDSE_STR-ANNAHMEZ sy-vline 
WA_QDSE_STR-KFAKTOR sy-vline 
WA_QDSE_STR-KFAKTORNI sy-vline 
WA_QDSE_STR-KZNVWSV sy-vline 
WA_QDSE_STR-KZVWSVPL sy-vline 
WA_QDSE_STR-FBKEY sy-vline 
WA_QDSE_STR-FBKEYMFS sy-vline 
WA_QDSE_STR-STPRPLAN sy-vline 
WA_QDSE_STR-PRSCHAERFE sy-vline 
WA_QDSE_STR-AQLWERT sy-vline 
WA_QDSE_STR-PROZUMF sy-vline 
WA_QDSE_STR-PROZUMFNI sy-vline 
WA_QDSE_STR-PROZAZL sy-vline 
WA_QDSE_STR-PROZAZLNI sy-vline 
WA_QDSE_STR-ERSTELLER sy-vline 
WA_QDSE_STR-AENDERER sy-vline 
WA_QDSE_STR-ERSTELLDAT sy-vline 
WA_QDSE_STR-AENDERDAT sy-vline 
WA_QDSE_STR-KZRAST sy-vline 
WA_QDSE_STR-RASTER sy-vline 
WA_QDSE_STR-QRKART sy-vline 
WA_QDSE_STR-DUMMY_QDSV_INCL_EEW_PS sy-vline 
WA_QDSE_STR-KZATTRFE sy-vline 
WA_QDSE_STR-KZATTRFZ sy-vline 
WA_QDSE_STR-KZVARS sy-vline 
WA_QDSE_STR-KZVARSIGM sy-vline 
WA_QDSE_STR-KZCOD sy-vline 
WA_QDSE_STR-KZMAN sy-vline 
WA_QDSE_STR-KZQRK sy-vline 
WA_QDSE_STR-KZAUS sy-vline 
WA_QDSE_STR-KZCNULL sy-vline 
WA_QDSE_STR-KZKNULL sy-vline 
WA_QDSE_STR-KZOHNEBEWP sy-vline 
WA_QDSE_STR-KZTAB sy-vline 
WA_QDSE_STR-KZANT sy-vline 
WA_QDSE_STR-KZFIX sy-vline 
WA_QDSE_STR-KZ100 sy-vline 
WA_QDSE_STR-KZDYHIREL sy-vline 
WA_QDSE_STR-KZSKIP sy-vline 
WA_QDSE_STR-KZKEINSKIP sy-vline      INTO ld_text SEPARATED BY SPACE.

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