LINQ to DB is a LINQ database access library offering a simple, light, fast, and type-safe layer between your POCO objects and your database.
Architecturally it is one step above micro-ORMs like Dapper, Massive, or PetaPoco, in that you work with LINQ expressions, not with magic strings, while maintaining a thin abstraction layer between your code and the database. Your queries are checked by the C# compiler and allow for easy refactoring.
This is free and open source software.
Features include:
- Rich Querying API:
- Explicit Join Syntax (In addition to standard LINQ join syntax). LINQ To DB supports all standard SQL join types: INNER, LEFT, FULL, RIGHT, CROSS JOIN.
- CTE Support – this lets you reuse the same SQML part in complex query, and recursive table processing.
- Bulk Copy/Insert – takes data and operation options, then perform inserts and return operation status.
- Window/Analytic Functions – window functions are implemented as extension methods for static Sql.Ext property.
- Merge API which contains four groups of methods:
- Merge, MergeInto, Using, UsingTarget methods to configure merge command’s source and target.
- On, OnTargetKey methods to configure merge command’s match condition.
- InsertWhenNotMatched*, UpdateWhenMatched*, DeleteWhenMatched*, UpdateWhenNotMatchedBySource*, DeleteWhenNotMatchedBySource*, UpdateWhenMatched*ThenDelete methods to add operations to merge command
- Merge and MergeAsync methods to execute command against database
- Extensibility:
- Ability to Map Custom SQL to Static Functions.
Website: linq2db.github.io
Support: GitHub Code Repository
Developer: Igor Tkachev, Ilya Chudin, Svyatoslav Danyliv, Dmitry Lukashenko
License: MIT License
LINQ to DB is written in C#. Learn C# with our recommended free books and free tutorials.
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