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POOptimize TSQL Except
 

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  1. POOptimize TSQL Except
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    <p>I could optimize the join if I could include the ID from table <code>MasterStaging</code> (staging table):</p> <ul> <li>Including the ID in the <code>EXCEPT</code> will distort the results since the <code>ID</code> from <code>MasterStaging</code> will always be different from <code>StatusComparison</code></li> <li><code>MasterStaging.ID</code> is irrelevant, just an autonumber, and does not represent the customer ID</li> <li>The SQL is designed to show missing customers, regardless of ID. </li> <li>The CustomerAccountNo is not a unique number</li> </ul> <p>How can I include obtain the ID top optimize the <code>JOIN</code>?</p> <p>This is what I want:</p> <p>Same SQL as below, but I will <code>JOIN</code> only using <code>ID</code></p> <pre><code>) x ON e.ID = x.ID </code></pre> <p>Here is what I have so far:</p> <pre><code>UPDATE ecl.MasterStaging SET NewAccount = 1 FROM ecl.MasterStaging e WITH (NOLOCK) JOIN ( SELECT ISNULL(Usable, 0) AS Usable , ISNULL(TypeRC, 0) AS TypeRC , ISNULL(CustomerNumber, 0) AS CustomerNumber , ISNULL(CustomerAccountNo, 0) AS CustomerAccountNo , ISNULL(LoadProfileClass, 0) AS LoadProfileClass , ISNULL(MeterNo, 0) AS MeterNo , ISNULL(PrimaryPhoneNumber, 0) AS PrimaryPhoneNumber , ISNULL(CustomerName1, 0) AS CustomerName1 , ISNULL(ServiceAddress1, 0) AS ServiceAddress1 , ISNULL(ServiceCity, 0) AS ServiceCity , ISNULL(ServiceState, 0) AS ServiceState , ISNULL(ServiceZip, 0) AS ServiceZip , ISNULL(BillingAddress1, 0) AS BillingAddress1 , ISNULL(BillingCity, 0) AS BillingCity , ISNULL(BillingState, 0) AS BillingState , ISNULL(substring(BillingZip, 1, 5), 0) as BillingZip , ISNULL(substring(BillingZip4, 7, 4), 0) as BillingZip4 FROM ecl.MasterStaging WITH (NOLOCK) EXCEPT SELECT Usable , TypeRC , CustomerNumber , CustomerAccountNo , LoadProfileClass , MeterNo , PrimaryPhoneNumber , CustomerName1 , ServiceAddress1 , ServiceCity , ServiceState , ServiceZip , BillingAddress1 , BillingCity , BillingState , BillingZip , BillingZip4 FROM ecl.StatusComparison WITH (NOLOCK) WHERE [Status] &lt;&gt; 'D' ) x ON ISNULL(e.Usable,0) = x.Usable AND ISNULL(e.TypeRC,0) = x.TypeRC AND ISNULL(e.CustomerNumber,0) = x.CustomerNumber AND ISNULL(e.CustomerAccountNo,0) = x.CustomerAccountNo AND ISNULL(e.LoadProfileClass,0) = x.LoadProfileClass AND ISNULL(e.MeterNo,0) = x.MeterNo AND ISNULL(e.PrimaryPhoneNumber,0) = x.PrimaryPhoneNumber AND ISNULL(e.CustomerName1,0) = x.CustomerName1 AND ISNULL(e.ServiceAddress1,0) = x.ServiceAddress1 AND ISNULL(e.ServiceCity,0) = x.ServiceCity AND ISNULL(e.ServiceState,0) = x.ServiceState AND ISNULL(e.ServiceZip,0) = x.ServiceZip AND ISNULL(e.BillingAddress1,0) = x.BillingAddress1 AND ISNULL(e.BillingCity,0) = x.BillingCity AND ISNULL(e.BillingState,0) = x.BillingState AND ISNULL(e.BillingZip,0) = x.BillingZip AND ISNULL(e.BillingZip4,0) = x.BillingZip4 </code></pre>
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