Question

Append Query Hangs

Asked by: skull52

I have 2 tables tblTracking and dbo_V_ATIExcizeExport I created the append query below to append the records in dbo_V_ATIExcizeExport that do not exist in tblTracking, the query seems to hang I have let it run for over 15 mins with to apparent progress there are 75,227 records in dbo_V_ATIExcizeExport. Is there a more efficient way to accomplish what I want to do?

INSERT INTO tblTracking ( CUSTNAME, CUSTNMBR, Freight_Amt, SHIPPING_MTHD, Invoice_No, Invoice_Date, ITEMNMBR, SERLTNUM, PRODUCT_TYPE, UNIT_PRICE, DATE_PAID, AMT_PAID, VENDORID, VENDNAME, ITEMDESC )
SELECT dbo_V_ATIExcizeExport.CUSTNAME, dbo_V_ATIExcizeExport.CUSTNMBR, dbo_V_ATIExcizeExport.Freight_Amt, dbo_V_ATIExcizeExport.SHIPPING_MTHD, dbo_V_ATIExcizeExport.Invoice_No, dbo_V_ATIExcizeExport.Invoice_Date, dbo_V_ATIExcizeExport.ITEMNMBR, dbo_V_ATIExcizeExport.SERLTNUM, dbo_V_ATIExcizeExport.PRODUCT_TYPE, dbo_V_ATIExcizeExport.UNIT_PRICE, dbo_V_ATIExcizeExport.DATE_PAID, dbo_V_ATIExcizeExport.AMT_PAID, dbo_V_ATIExcizeExport.VENDORID, dbo_V_ATIExcizeExport.VENDNAME, dbo_V_ATIExcizeExport.ITEMDESC
FROM dbo_V_ATIExcizeExport
WHERE (((Exists (select Invoice_No from tblTracking where tblTracking.Invoice_No =dbo_V_ATIExcizeExport.Invoice_No ))=False));

                                  
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Asked On
2009-10-06 at 14:45:12ID24790633
Topics

Microsoft Access Database

,

SQL Query Syntax

Participating Experts
6
Points
250
Comments
13

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    Answers

     

    by: calpurniaPosted on 2009-10-06 at 15:14:56ID: 25510494

    I'm not sure if this will help, but if you set the Invoice_No field in tblTracking to Indexed (no duplicates), Access will not append any records with duplicate Invoice_No values.

     

    by: necritPosted on 2009-10-06 at 18:55:17ID: 25511615

    I see two real world solutions here.  I am making two assumptions.  One the table dbo_V_ATIExcizeExport is a linked sql table.  Two you can create tables and views within this server.

    1. Pull dbo_V_ATIExcizeExport into the access database to leverage access slight gain in speed for working with both tables locally to the database instead of linked.  Then insert into a 3rd temp table... i would call it tblTracking_Tmp where it stores only the new records then store that result in tblTracking without the where clause so that access doesnt have to iterate the entire table prior to filtering on the where clause.  You really dont "Win" in this situation because you are still iterating the entire dataset with the where clause within access. 
    2. Create a tmp table in the linked sql database with mirroring of the design to dbo_V_ATIExcizeExport.  upload tblTracking into a tmp SQL table.  create a view that performs the filter server side.  link to that view and insert that view into your local tblTracking table.
       

     

    by: skull52Posted on 2009-10-07 at 02:47:13ID: 25513523

    necrit
    Both tables are local, dbo_V_ATIExcizeExport is an import from a linked view, tblTracking is the table that is update from  dbo_V_ATIExcizeExport local table tblTracking will have additional data added to it I need to keep that tables data intact I just want to append the records from   dbo_V_ATIExcizeExport that do not reside in tblTracking

     

    by: necritPosted on 2009-10-07 at 06:45:00ID: 25515243

    Then instead of importing dbo_v_atiexcizeexport why not upload the tbltracking to the server and have hte sql server perform the outjoin server side and then pull in only the delta of new records from a custom view that will be then just dumped into the tblTracking?

     

    by: skull52Posted on 2009-10-07 at 07:50:08ID: 25516130

    Let me explain the function of the database. Because we are an Importer we are required to pay excise tax on any imported item we sell, this database keeps track of the paid taxes.  dbo_V_ATIExcizeExport is a table that I flush and fill from a view comprised of several tables on our SQL Server it contains customer and item information which changes constantly, tblTracking has the same schema but it is where the date and amount of the tax is recorded, therefore can not be flushed. All I want to do is append the records from dbo_V_ATIExcizeExport that do not exist in tblTracking. That is the reason I have the tables local assuming the append would be fast,(Wrong). I used the invoice number as the query point. The invoice number is unique in that only one invoice number is assigned per order but if the order has multiple lines the invoice number is on each line therefore I cant use Distinct or make it a PK with no Dups. Is it possible to use WHERE NOT EXISTS as opposed to WHERE (((Exists (select Invoice_No from tblTracking where tblTracking.Invoice_No =dbo_V_ATIExcizeExport.Invoice_No ))=False));

    Invoice_No      ITEMNMBR      SERLTNUM
    111435      2224AK47      A342915
    111435      2224AK47      A342913
    111435      2224AK47      A342912
    111435      2224AK47      A342911
    111435      2224AK47      A342910

     

    by: skull52Posted on 2009-10-08 at 11:22:32ID: 25528447

    Does anyone have a suggestion to my dilemma

     

    by: hnasrPosted on 2009-10-12 at 14:41:41ID: 25555326

    Does it work with 10 records tables?

     

    by: fredtheredPosted on 2009-10-12 at 15:30:52ID: 25555646

    skull52,
    Use the MS Access 'Find Unmatched Query Wizard' to find all records in dbo_V_ATIExcizeExport that are not in tblTracking (based on the Invoice_No). Include all the fields from dbo_V_ATIExcizeExport that you will need to append to tblTracking. At the final design step (View the results or Modify the design), click the 'Modify the design' option and Finish.

    Click the 'Query' menu and change the query type to 'Append Query'; then pick the tblTracking table as the target table for appends. Make sure in the query design pane, that Invoice_No isn't included twice.

    If possible, ensure that both the dbo_V_ATIExcizeExport and tblTracking are explicitely indexed on Invoice_No field before running.

    If you want to see how this works, switch the Query Design View to SQL View and you will see that an "Unmatched" query determines which records are NOT found by using a left join from the L.H.S. table to the R.H.S. table.

    Hope this helps.

     

    by: Arthur_WoodPosted on 2009-10-12 at 19:19:19ID: 25556538

    <pre id="codeSnippet425126" class="prettyprint">First make a new table (call it cpyTracking) which holds ONLY the Invoice_No values from tblTracking
    then:

    INSERT INTO tblTracking
    ( CUSTNAME, CUSTNMBR, Freight_Amt, SHIPPING_MTHD, Invoice_No, Invoice_Date, ITEMNMBR, SERLTNUM, PRODUCT_TYPE, UNIT_PRICE, DATE_PAID, AMT_PAID, VENDORID, VENDNAME, ITEMDESC )
    SELECT dbo_V_ATIExcizeExport
    .CUSTNAME, dbo_V_ATIExcizeExport.CUSTNMBR, dbo_V_ATIExcizeExport.Freight_Amt, dbo_V_ATIExcizeExport.SHIPPING_MTHD, dbo_V_ATIExcizeExport.Invoice_No, dbo_V_ATIExcizeExport.Invoice_Date, dbo_V_ATIExcizeExport.ITEMNMBR, dbo_V_ATIExcizeExport.SERLTNUM, dbo_V_ATIExcizeExport.PRODUCT_TYPE, dbo_V_ATIExcizeExport.UNIT_PRICE, dbo_V_ATIExcizeExport.DATE_PAID, dbo_V_ATIExcizeExport.AMT_PAID, dbo_V_ATIExcizeExport.VENDORID, dbo_V_ATIExcizeExport.VENDNAME, dbo_V_ATIExcizeExport.ITEMDESC
    FROM dbo_V_ATIExcizeExport
    WHERE Invoice_No not in (Select Invoice_No from cpyTracking)

    That should be MUCH faster.

    AW
    </pre>

     

    by: LambertHeenanPosted on 2009-10-13 at 08:40:20ID: 25561137

    I'm pretty sure it's the embedded sub query, Access is very slow at those.

    I suggest you instead join the table dbo_V_ATIExcizeExport to tblTracking and then test for nulls in tblTracking .Invoice_No. The SQL attached should do the job. This is what fredthered was talking about when he suggested using the  'Find Unmatched Query Wizard' .


    INSERT INTO tblTracking ( CUSTNAME, CUSTNMBR, Freight_Amt, SHIPPING_MTHD, Invoice_No, Invoice_Date, ITEMNMBR, SERLTNUM, PRODUCT_TYPE, UNIT_PRICE, DATE_PAID, AMT_PAID, VENDORID, VENDNAME, ITEMDESC )
    SELECT dbo_V_ATIExcizeExport.CUSTNAME, dbo_V_ATIExcizeExport.CUSTNMBR, dbo_V_ATIExcizeExport.Freight_Amt, dbo_V_ATIExcizeExport.SHIPPING_MTHD, dbo_V_ATIExcizeExport.Invoice_No, dbo_V_ATIExcizeExport.Invoice_Date, dbo_V_ATIExcizeExport.ITEMNMBR, dbo_V_ATIExcizeExport.SERLTNUM, dbo_V_ATIExcizeExport.PRODUCT_TYPE, dbo_V_ATIExcizeExport.UNIT_PRICE, dbo_V_ATIExcizeExport.DATE_PAID, dbo_V_ATIExcizeExport.AMT_PAID, dbo_V_ATIExcizeExport.VENDORID, dbo_V_ATIExcizeExport.VENDNAME, dbo_V_ATIExcizeExport.ITEMDESC
    FROM dbo_V_ATIExcizeExport RIGHT JOIN dbo_V_ATIExcizeExport ON dbo_V_ATIExcizeExport.Invoice_No = tblTracking.Invoice_No
    WHERE (((dbo_V_ATIExcizeExport.Invoice_No ) Is Null));
    
                                                  
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    by: skull52Posted on 2009-10-21 at 14:08:43ID: 25628477

    Sorry I haven't responded sooner but  I have been busy for the last few days. I will try the suggested fixes and report back.

     

    by: skull52Posted on 2009-10-30 at 08:17:15ID: 31637959

    Thanks to all

    20120131-EE-VQP-002

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