ABAP Select data from SAP table DQUP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DQUP
*  INTO TABLE @DATA(IT_DQUP2).
*--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_DQUP INDEX 1 INTO DATA(WA_DQUP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DQUP>-QUNUM = 1.
<DQUP>-QUPOS = 1.
<DQUP>-BESKZ = 1.
<DQUP>-SOBES = 1.
<DQUP>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DQUP-BEWRK, sy-vline,
  WA_DQUP-QUOTE, sy-vline,
  WA_DQUP-QUBMG, sy-vline,
  WA_DQUP-QUMNG, sy-vline,
  WA_DQUP-MAXMG, sy-vline,
  WA_DQUP-VERID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DQUP 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_DQUP 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_DQUP INTO WA_DQUP.


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

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

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DQUP-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DQUP-EMATN.
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_DQUP_STR, 
QUNUM TYPE STRING,
QUPOS TYPE STRING,
BESKZ TYPE STRING,
SOBES TYPE STRING,
LIFNR TYPE STRING,
BEWRK TYPE STRING,
QUOTE TYPE STRING,
QUBMG TYPE STRING,
QUMNG TYPE STRING,
MAXMG TYPE STRING,
VERID TYPE STRING,
MAXLS TYPE STRING,
MINLS TYPE STRING,
RDPRF TYPE STRING,
KZEIN TYPE STRING,
ABRMG TYPE STRING,
ABPER TYPE STRING,
ABANZ TYPE STRING,
PREIH TYPE STRING,
FLGDA TYPE STRING,
FLGSP TYPE STRING,
PLIFZ TYPE STRING,
EMATN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DQUP_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_DQUP_STR-QUNUM sy-vline 
WA_DQUP_STR-QUPOS sy-vline 
WA_DQUP_STR-BESKZ sy-vline 
WA_DQUP_STR-SOBES sy-vline 
WA_DQUP_STR-LIFNR sy-vline 
WA_DQUP_STR-BEWRK sy-vline 
WA_DQUP_STR-QUOTE sy-vline 
WA_DQUP_STR-QUBMG sy-vline 
WA_DQUP_STR-QUMNG sy-vline 
WA_DQUP_STR-MAXMG sy-vline 
WA_DQUP_STR-VERID sy-vline 
WA_DQUP_STR-MAXLS sy-vline 
WA_DQUP_STR-MINLS sy-vline 
WA_DQUP_STR-RDPRF sy-vline 
WA_DQUP_STR-KZEIN sy-vline 
WA_DQUP_STR-ABRMG sy-vline 
WA_DQUP_STR-ABPER sy-vline 
WA_DQUP_STR-ABANZ sy-vline 
WA_DQUP_STR-PREIH sy-vline 
WA_DQUP_STR-FLGDA sy-vline 
WA_DQUP_STR-FLGSP sy-vline 
WA_DQUP_STR-PLIFZ sy-vline 
WA_DQUP_STR-EMATN sy-vline      INTO ld_text SEPARATED BY SPACE.

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