LEWE ZEWNĘTRZNE DOŁĄCZ i NIE ISTNIEJĄ zapytanie

Question

Mam trudny czas ze złożonym złączeniem, w którym muszę dołączyć do dwóch razy tych samych tabel i upewnić się, że łączenie jest wykonywane za każdym razem tylko z określonym rekordem (najbardziej niedawny).

SELECT c.collection_id  AS collections, 
     s.strat_id   AS StrategyId, 
     s.strat_version  AS StrategyVersion, 
     ssb.side_ordering AS SSB_SO, 
     ssb2.side_ordering AS SSB2_SO, 
     Invoice1.invoice_id AS Inv1ID, 
     Invoice2.invoice_id AS Inv2ID, 
     Invoice1.printeddate AS Inv1PrintedDate, 
     Invoice2.printeddate AS Inv2PrintedDate 
    FROM dbo.collections AS c 
     INNER JOIN dbo.strategies AS s 
       ON c.collection_id = s.collection_id 
     INNER JOIN dbo.side_strat_brkrgs AS ssb 
       ON s.collection_id = ssb.collection_id 
        AND s.strat_id = ssb.strat_id 
        AND s.strat_version = ssb.strat_version 
     INNER JOIN dbo.strat_sides AS ss 
       ON ss.strat_side_id = ssb.strat_side_id 
     LEFT OUTER JOIN dbo.side_strat_brkrgs AS ssb2 
        ON ssb2.collection_id = ssb.collection_id 
         AND ssb2.strat_id = ssb.strat_id 
         AND ssb2.strat_version = ssb.strat_version 
         AND ssb2.side_ordering <> ssb.side_ordering 
     INNER JOIN dbo.strat_sides AS ss2 
       ON ss2.strat_side_id = ssb2.strat_side_id 
     LEFT OUTER JOIN dbo.newinvoiceitem AS InvoiceItem1 
        ON ssb.collection_id = InvoiceItem1.collection_id 
         AND ssb.side_ordering = InvoiceItem1.side_ordering 
         AND s.strat_id = InvoiceItem1.strat_id 
     LEFT OUTER JOIN dbo.newinvoice AS Invoice1 
        ON Invoice1.invoice_id = InvoiceItem1.invoice_id 
     LEFT OUTER JOIN dbo.newinvoiceitem AS InvoiceItem2 
        ON ssb2.collection_id = InvoiceItem2.collection_id 
         AND ssb2.side_ordering = InvoiceItem2.side_ordering 
         AND s.strat_id = InvoiceItem2.strat_id 
     LEFT OUTER JOIN dbo.newinvoice AS Invoice2 
        ON Invoice2.invoice_id = InvoiceItem2.invoice_id 
WHERE NOT EXISTS (SELECT 1 
        FROM dbo.newinvoiceitem tempInvoiceItem1 
          INNER JOIN dbo.newinvoice AS tempInvoice1 
            ON tempInvoice1.invoice_id = 
            tempInvoiceItem1.invoice_id 
        WHERE tempInvoiceItem1.collection_id = ssb.collection_id 
          AND ssb.side_ordering = tempInvoiceItem1.side_ordering 
          AND s.strat_id = tempInvoiceItem1.strat_id 
          AND s.strat_version = tempInvoiceItem1.strat_version 
          AND tempInvoice1.printeddate > Invoice1.printeddate) 
     AND NOT EXISTS (SELECT 1 
         FROM dbo.newinvoiceitem tempInvoiceItem2 
           INNER JOIN dbo.newinvoice AS tempInvoice2 
             ON tempInvoice2.invoice_id = 
             tempInvoiceItem2.invoice_id 
         WHERE 
       tempInvoiceItem2.collection_id = ssb2.collection_id 
       AND ssb2.side_ordering = tempInvoiceItem2.side_ordering 
       AND s.strat_id = tempInvoiceItem2.strat_id 
       AND s.strat_version = tempInvoiceItem2.strat_version 
       AND tempInvoice2.printeddate > Invoice2.printeddate) 
     AND c.collection_id = 16447 

I uzyskać następujący wynik:

16447 1 3 1 0 3785 3183 2010-05-06 17:52:00 2010-05-06 17:52:00 
16447 1 3 1 0 3785 4033 2010-05-06 17:52:00 2010-05-10 16:32:00 
16447 1 3 1 0 4137 3183 2010-05-20 17:08:00 2010-05-06 17:52:00 
16447 1 3 1 0 4137 4033 2010-05-20 17:08:00 2010-05-10 16:32:00 

Chociaż ja rzeczywiście spodziewa się tylko ostatni wiersz. Gdzie się mylę?

Jak widać nie mogę używać MAX(), aby odzyskać najwyższy rekord, bo trzeba szukać innej nieruchomości przez JOIN i jestem zmuszony używać nie istnieje

Answer 1

Spróbuj predykat

WHERE EXISTS (SELECT 1 
       FROM dbo.newinvoiceitem tempInvoiceItem1 
       INNER JOIN dbo.newinvoice AS tempInvoice1 
        ON tempInvoice1.invoice_id = tempInvoiceItem1.invoice_id 
       WHERE tempInvoiceItem1.collection_id = ssb.collection_id 
       AND ssb.side_ordering = tempInvoiceItem1.side_ordering 
       AND s.strat_id = tempInvoiceItem1.strat_id 
       HAVING MAX(tempInvoice1.printeddate) = Invoice1.printeddate 
       OR Invoice1.printeddate IS NULL 
       )       
     AND EXISTS (SELECT 1 
        FROM dbo.newinvoiceitem tempInvoiceItem2 
        INNER JOIN dbo.newinvoice AS tempInvoice2 
         ON tempInvoice2.invoice_id = tempInvoiceItem2.invoice_id 
        WHERE tempInvoiceItem2.collection_id = ssb2.collection_id 
        AND ssb2.side_ordering = tempInvoiceItem2.side_ordering 
        AND s.strat_id = tempInvoiceItem2.strat_id 
        HAVING MAX(tempInvoice2.printeddate) = Invoice2.printeddate 
        OR Invoice2.printeddate IS NULL 
        ) 
     AND c.collection_id = 16447 

LUB

WHERE EXISTS (SELECT 1 
       FROM dbo.newinvoiceitem tempInvoiceItem1 
       INNER JOIN dbo.newinvoice AS tempInvoice1 
        ON tempInvoice1.invoice_id = tempInvoiceItem1.invoice_id 
       WHERE tempInvoiceItem1.collection_id = ssb.collection_id 
       AND ssb.side_ordering = tempInvoiceItem1.side_ordering 
       AND s.strat_id = tempInvoiceItem1.strat_id 
       HAVING MAX(tempInvoice1.printeddate) = Invoice1.printeddate      
       )       
     AND EXISTS (SELECT 1 
        FROM dbo.newinvoiceitem tempInvoiceItem2 
        INNER JOIN dbo.newinvoice AS tempInvoice2 
         ON tempInvoice2.invoice_id = tempInvoiceItem2.invoice_id 
        WHERE tempInvoiceItem2.collection_id = ssb2.collection_id 
        AND ssb2.side_ordering = tempInvoiceItem2.side_ordering 
        AND s.strat_id = tempInvoiceItem2.strat_id 
        HAVING MAX(tempInvoice2.printeddate) = Invoice2.printeddate 
        ) 
     AND c.collection_id = 16447 OR Invoice1.printeddate IS NULL 
     OR Invoice2.printeddate IS NULL