Table of Contents
What inherits from IQueryable?
The IQueryable interface inherits the IEnumerable interface so that if it represents a query, the results of that query can be enumerated. Enumeration causes the expression tree associated with an IQueryable object to be executed.
Is IQueryable faster?
That is why IQueryable is considered faster, because there is a lot less data that needs to be processed because you where able to ask a more specific question to the server.
Why we use IQueryable in LINQ?
IQueryable is suitable for querying data from out-memory (like remote database, service) collections. While querying data from a database, IQueryable executes a “select query” on server-side with all filters. IQueryable is beneficial for LINQ to SQL queries.
What is IQueryable used for?
Where is IQueryable used?
What is difference between IQueryable and IEnumerable?
The main difference between IEnumerable and IQueryable in C# is that IQueryable queries out-of-memory data stores, while IEnumerable queries in-memory data. Moreover, IQueryable is part of . NET’s System. LINQ namespace, while IEnumerable is in System.
What is the IQueryable interface in Java?
More… The IQueryable interface is intended for implementation by query providers. It is only supposed to be implemented by providers that also implement IQueryable . If the provider does not also implement IQueryable , the standard query operators cannot be used on the provider’s data source.
What is the use of IQueryable?
IQueryable simply pairs the expression tree ( Expression) with a query provider ( IQueryProvider ). The query provider ( IQueryProvider) is responsible for interpreting the expression tree, executing the query, and fetching the results. The key word here is “interpreting”.
How do you create a query in IQueryable?
The CreateQuery () simply creates an instance of the IQueryable implementation class with the expression. The execute method is where the magic happens: it uses an custom built ExpressionVisitor to replace the root of the expression tree — that is, to change the RepositoryBase to the DbSet .
What is the IQueryable sequence in LINQ?
Queryable sequence (IQueryable) – This is the approximate equivalent to IEnumerable in LINQ to Objects. It simply pairs a query provider with an expression tree. As with IEnumerable, LINQ provides a set of standard methods, defined in the System.Linq.Queryable class. These methods all extend IQueryable.