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PO
 

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    <p>How the columns are aliased in the query shouldn't matter, and neither should their order. Entity Framework handles populating a new instance of your anonymous type with each result, and that's where you get the alias like <code>login</code>.</p> <p>As a side note, I think Entity Framework may not work quite how you think. You can't do a select/insert in a single operation like you can using a normal SQL query. Entity Framework will execute your select, return back the results, use those results to create new instances of your entities (or in your case, an anonymous type), and you would then have to use each result to create a new instance of your target type, adding each one to your entity/object context, and finally call save changes on your entity/object context. This will cause an individual insert statement to be executed for each new entity that you've added.</p> <p>If you want to do it all in a single operation without instantiating a new entity for every record, you'll need to either use a stored procedure that you map in your context, or else execute an in-line SQL query using <a href="http://msdn.microsoft.com/en-us/library/system.data.objects.objectcontext.executestorecommand.aspx" rel="nofollow"><code>ObjectContext.ExecuteStoreCommand</code></a></p> <p><strong>UPDATE:</strong> Based on your responses, what you're really getting into is closer to meta-programming that relies on your entity model more so than actually using entity framework. I don't know what version of EF you're using (EF 4.0? 4.1 w/ code first and DbContext?), but I've had a lot of success using the C# POCO template with EF 4.0 (the POCO template is a download from the online visual studio gallery). It uses a T4 template to generate POCO classes from the .edmx data model. In your T4 template, you could add methods to your context that would essentially call <code>ExecuteStoreCommand</code>, but the difference would be you can generate the query that gets executed based on your data model. That way any time your data model changes, your query would stay in sync with the changes.</p>
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    1. POHow does Entity Framework manage mapping query result to anonymous type?
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    1. USJoel C
    1. USJoel C
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    1. COI’ve updated the post to explain why the column order matters. One of the LINQ advantages over plain SQL command is strong typing. That means if I change a column name and then regenerate model code, I’ll get compiler error in LINQ. That’s why I do not want to fall back to `ExecuteStoreCommand`.
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      1. USMike
    2. COIf you're planning on using metadata to build the `INSERT INTO ...` part of your query, why not just do the same thing for the `SELECT ...` part also?
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      1. USJoel C
    3. COBasically I do not know where to look for the query columns mappings. I’m parsing `.msl` file as xml to discover how `ObjectSet<T>` is mapped to a table because `ObjectContext.MetadataWorkspace.GetItemCollection(DataSpace.CSSpace)` is almost internal and I’m trying to avoid reflection until it’s the only option. On the other hand, object set to table mapping is not enough because the linq select can contain constant or computation expressions with resulting columns aliased in sql as “C1”, “C2” and so on. Right now I’m exploring CSSpace collection non-public members but with no luck.
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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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