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    <p><strong>Identity Maps</strong></p> <p>A common problem when using ORMs (ok, maybe not exactly common, but it can happen) is that a query which you expect to return distinct records ends up returning multiple copies of the same record. This is often caused by the ORM's Identity Map. Here's a quick overview of how it normally works.</p> <p>The identity map is essentially an object cache, based on the primary key of each object. </p> <p>When you ask the ORM for a record with a certain primary key, it'll check to see if the record already exists in the identity map. If it does already exist, it'll return the existing record.</p> <p>This is usually pretty handy, but sometimes things go wrong. If two objects have the same primary key, or if you haven't specified what the primary keys are (forcing the ORM to guess), the identity map can't distinguish between them, and the first one will always be returned.</p> <p>The moral of the story is, always double-check your primary keys if you are seeing multiple copies of the same record where you shouldn't be!</p> <hr> <p>In this question, the code</p> <pre><code> select new { v.Value1, v.Value2, v.Value3, ... snip ... v.Value14, v.Value15, v.ValueTypeID }; </code></pre> <p>works because you are using the select new{} projection to return an anonymous type, which bypasses the identity map.</p> <pre><code> select v </code></pre> <p>selects the objects directly, which does use the identity map, causing the problem you were seeing.</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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