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29 maj 2024 · The join methods provided in the LINQ framework are Join and GroupJoin. These methods perform equijoins, or joins that match two data sources based on equality of their keys. (For comparison, Transact-SQL supports join operators other than equals, for example the less than operator.)
I think a more readable and flexible option is to use Where function: var result = from x in entity1 from y in entity2 .Where(y => y.field1 == x.field1 && y.field2 == x.field2) This also allows to easily change from inner join to left join by appending .DefaultIfEmpty(). Share.
LINQ provides several methods for performing joins, similar to SQL joins, to combine data from two or more collections based on a common key or condition. The primary join methods in LINQ are Join, GroupJoin, and SelectMany.
7 wrz 2023 · LINQ provides a fluent, intuitive and consistent way to query data sets. See how LINQ join operations simplify queries on multiple data sets
28 kwi 2023 · A join clause takes two source sequences as input. The elements in each sequence must either be or contain a property that can be compared to a corresponding property in the other sequence. The join clause compares the specified keys for equality by using the special equals keyword. All joins performed by the join clause are equijoins
The following code example demonstrates how to use Join<TOuter,TInner,TKey,TResult>(IQueryable<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter,TKey>>, Expression<Func<TInner,TKey>>, Expression<Func<TOuter,TInner,TResult>>) to perform an inner join of two sequences based on a common key.
The Join operator joins two sequences (collections) based on a key and returns a resulted sequence.
