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Editorial Team
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Asked: 2026-05-15T15:53:03+00:00

I noticed that LINQ to Objects has a GroupBy method. In light of this,

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I noticed that LINQ to Objects has a GroupBy method. In light of this, I was wondering if anyone can build a case for grouping a list of objects in memory using LINQ vs having SQL Server perform the grouping?

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  1. Editorial Team

    Some reasons you might want to group using LINQ on the client are:

    1. Your objects are already in memory.
    2. You might want to group by different keys at different times during the lifecycle of the data, and return trips to the database might be costly.
    3. You might want to group by something that’s inconvenient for SQL Server to calculate, such as data.GroupBy(d => DoSomethingComplicatedWith(d)).
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