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POReturning only records that have matching fields in other records
 

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    <p>I have a query that returns a list of customers and their addresses. </p> <pre><code>ID FName LName Address1 City Postcode -------------------------------------------------------- 1 James Smith 1 Bank Street London W1C 1AA 2 Sarah Jones 45 Moor Ave London SW1 1YH 3 Mary Smith 1 Bank Street London W1C 1AA 4 Sean Baker 17 White Blvd London SE3 7TH 5 Bob Patel 58B Canal St London NW2 2TT 6 Seeta Patel 58B Canal St London NW2 2TT 7 David Hound 4 Main St London E11 8AB </code></pre> <p>I'm trying to produce another query from this data that selects a list of customers who are related/living together.The criteria for this would be the same Address 1 and Postcode fields.</p> <p>My question is how I can produce a query that only selects records that have at least 1 other record with matching [Address1] and [Postcode]? ie; in the above example return only records 1, 3, 5 and 6.</p>
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    1. USTroy Carlson
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