ABAP Select data from SAP table QDQLV 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 QDQLV 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 QDQLV. 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 QDQLV 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_QDQLV TYPE STANDARD TABLE OF QDQLV,
      WA_QDQLV TYPE QDQLV,
      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: <QDQLV> TYPE QDQLV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QDQLV
*  INTO TABLE @DATA(IT_QDQLV2).
*--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_QDQLV INDEX 1 INTO DATA(WA_QDQLV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QDQLV>-MANDT = 1.
<QDQLV>-WERKS = 1.
<QDQLV>-MATNR = 1.
<QDQLV>-PLNTY = 1.
<QDQLV>-PLNNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QDQLV-PLNAL, sy-vline,
  WA_QDQLV-PLNFL, sy-vline,
  WA_QDQLV-PLNKN, sy-vline,
  WA_QDQLV-ZAEHLERQL, sy-vline,
  WA_QDQLV-LIFNR, sy-vline,
  WA_QDQLV-HERSTELLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QDQLV 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_QDQLV 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_QDQLV INTO WA_QDQLV.


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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VPLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QDQLV-VPLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDQLV-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_QDQLV_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
ZAEHLERQL TYPE STRING,
LIFNR TYPE STRING,
HERSTELLER TYPE STRING,
KUNNR TYPE STRING,
PRUEFART TYPE STRING,
VORNR TYPE STRING,
MERKNR TYPE STRING,
VPLTY TYPE STRING,
VPLNR TYPE STRING,
VPLAL TYPE STRING,
VPLFL TYPE STRING,
VPLNKN TYPE STRING,
AENDLOSA TYPE STRING,
AENDLOSM TYPE STRING,
AEDATLOSA TYPE STRING,
AEDATLOSM TYPE STRING,
AEZEILOSA TYPE STRING,
AEZEILOSM TYPE STRING,
PRUEFLOS TYPE STRING,
BWLOS TYPE STRING,
BWLOSDYN TYPE STRING,
STICHPRVER TYPE STRING,
DYNREGEL TYPE STRING,
PRSTUFENAE TYPE STRING,
ANZLOSEOVE TYPE STRING,
ANZPRAEN TYPE STRING,
ANZNIOAEN TYPE STRING,
DBEWERTG TYPE STRING,
MBEWERTG TYPE STRING,
PLOSOVE TYPE STRING,
DATLPRUEF TYPE STRING,
ANZPRSTOP TYPE STRING,
DELDATUM TYPE STRING,
RESDATUM TYPE STRING,
CHANGEDDATETIME TYPE STRING,
KZBUCHEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QDQLV_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_QDQLV_STR-MANDT sy-vline 
WA_QDQLV_STR-WERKS sy-vline 
WA_QDQLV_STR-MATNR sy-vline 
WA_QDQLV_STR-PLNTY sy-vline 
WA_QDQLV_STR-PLNNR sy-vline 
WA_QDQLV_STR-PLNAL sy-vline 
WA_QDQLV_STR-PLNFL sy-vline 
WA_QDQLV_STR-PLNKN sy-vline 
WA_QDQLV_STR-ZAEHLERQL sy-vline 
WA_QDQLV_STR-LIFNR sy-vline 
WA_QDQLV_STR-HERSTELLER sy-vline 
WA_QDQLV_STR-KUNNR sy-vline 
WA_QDQLV_STR-PRUEFART sy-vline 
WA_QDQLV_STR-VORNR sy-vline 
WA_QDQLV_STR-MERKNR sy-vline 
WA_QDQLV_STR-VPLTY sy-vline 
WA_QDQLV_STR-VPLNR sy-vline 
WA_QDQLV_STR-VPLAL sy-vline 
WA_QDQLV_STR-VPLFL sy-vline 
WA_QDQLV_STR-VPLNKN sy-vline 
WA_QDQLV_STR-AENDLOSA sy-vline 
WA_QDQLV_STR-AENDLOSM sy-vline 
WA_QDQLV_STR-AEDATLOSA sy-vline 
WA_QDQLV_STR-AEDATLOSM sy-vline 
WA_QDQLV_STR-AEZEILOSA sy-vline 
WA_QDQLV_STR-AEZEILOSM sy-vline 
WA_QDQLV_STR-PRUEFLOS sy-vline 
WA_QDQLV_STR-BWLOS sy-vline 
WA_QDQLV_STR-BWLOSDYN sy-vline 
WA_QDQLV_STR-STICHPRVER sy-vline 
WA_QDQLV_STR-DYNREGEL sy-vline 
WA_QDQLV_STR-PRSTUFENAE sy-vline 
WA_QDQLV_STR-ANZLOSEOVE sy-vline 
WA_QDQLV_STR-ANZPRAEN sy-vline 
WA_QDQLV_STR-ANZNIOAEN sy-vline 
WA_QDQLV_STR-DBEWERTG sy-vline 
WA_QDQLV_STR-MBEWERTG sy-vline 
WA_QDQLV_STR-PLOSOVE sy-vline 
WA_QDQLV_STR-DATLPRUEF sy-vline 
WA_QDQLV_STR-ANZPRSTOP sy-vline 
WA_QDQLV_STR-DELDATUM sy-vline 
WA_QDQLV_STR-RESDATUM sy-vline 
WA_QDQLV_STR-CHANGEDDATETIME sy-vline 
WA_QDQLV_STR-KZBUCHEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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