Last Updated: May 17, 2026
LINQ to Entities is the dialect of LINQ that Entity Framework Core uses to turn C# query expressions into SQL. The C# you write looks like ordinary LINQ over an in-memory collection, but every operator gets parsed into an expression tree, walked by EF's query provider, and translated into a single SQL statement that the database actually runs. This lesson covers what makes that translation possible, where it breaks down, and how to write LINQ queries that produce the SQL you intended.