Microsoft.EntityFrameworkCore.Query Namespace

Classes

CollectionResultExpression	An expression that represents creation of a collection in ShaperExpression for relational providers. This type is typically used by database providers (and other extensions). It is generally not used in application code.
CompiledQueryCacheKeyGenerator	Creates keys that uniquely identifies a query. This is used to store and lookup compiled versions of a query in a cache. This type is typically used by database providers (and other extensions). It is generally not used in application code. The service lifetime is Scoped. This means that each DbContext instance will use its own instance of this service. The implementation may depend on other services registered with any lifetime. The implementation does not need to be thread-safe.
CompiledQueryCacheKeyGeneratorDependencies	Service dependencies parameter class for CompiledQueryCacheKeyGenerator This type is typically used by database providers (and other extensions). It is generally not used in application code.
EntityQueryRootExpression	An expression that represents an entity query root in query expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
EnumerableExpression	An expression that represents an enumerable or group translated from chain over a grouping element. This type is typically used by database providers (and other extensions). It is generally not used in application code.
EvaluatableExpressionFilter	Represents a filter for evaluatable expressions. The service lifetime is Singleton. This means a single instance is used by many DbContext instances. The implementation must be thread-safe. This service cannot depend on services registered as Scoped.
EvaluatableExpressionFilterDependencies	Service dependencies parameter class for EvaluatableExpressionFilter This type is typically used by database providers (and other extensions). It is generally not used in application code.
ExpressionEqualityComparer	A comparer which implements IEqualityComparer<T> for Expression.
ExpressionExtensions	Extension methods for Expression types. This type is typically used by database providers (and other extensions). It is generally not used in application code.
ExpressionPrinter	A class to create a printable string representation of expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
GroupByShaperExpression	An expression that represents creation of a grouping element in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
IncludeExpression	An expression that represents include operation in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
InlineQueryRootExpression	An expression that represents an inline query root within the query (e.g. new[] { 1, 2, 3 }). This type is typically used by database providers (and other extensions). It is generally not used in application code.
JsonQueryExpression	An expression representing an entity or a collection of entities mapped to a JSON column and the path to access it. This type is typically used by database providers (and other extensions). It is generally not used in application code.
MaterializeCollectionNavigationExpression	An expression that represents materialization of a collection navigation in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
NavigationExpansionExtensibilityHelper	Service which helps with various aspects of navigation expansion extensibility.
NavigationExpansionExtensibilityHelperDependencies	Service dependencies parameter class for NavigationExpansionExtensibilityHelper This type is typically used by database providers (and other extensions). It is generally not used in application code.
NonQueryExpression	An expression that contains a non-query expression. The result of a non-query expression is typically the number of rows affected. This type is typically used by database providers (and other extensions). It is generally not used in application code.
NotParameterizedAttribute	Signals that custom LINQ operator parameter should not be parameterized during query compilation.
ParameterQueryRootExpression	An expression that represents a parameter query root within the query. This type is typically used by database providers (and other extensions). It is generally not used in application code.
PathSegment	A struct representing a component of JSON path used in JsonQueryExpression or JsonScalarExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
ProjectionBindingExpression	An expression that gets values from QueryExpression to be used in ShaperExpression while creating results. This type is typically used by database providers (and other extensions). It is generally not used in application code.
ProjectionMember	A class representing a chain of CLR members to bind. Usually generated from successive Select calls in the query. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryableMethods	A class that provides reflection metadata for translatable LINQ methods.
QueryableMethodTranslatingExpressionVisitor	A class that translates queryable methods in a query. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryableMethodTranslatingExpressionVisitorDependencies	Service dependencies parameter class for QueryableMethodTranslatingExpressionVisitor This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryCompilationContext	The primary data structure representing the state/components used during query compilation. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryCompilationContextDependencies	Service dependencies parameter class for QueryCompilationContext This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryContext	The principal data structure used by a compiled query during execution. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryContextDependencies	Service dependencies parameter class for QueryContext This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryRootExpression	An expression that represents a query root in query expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryRootProcessor	A visitor which adds additional query root nodes during preprocessing.
QuerySqlGenerator	A query SQL generator to get IRelationalCommand for given SelectExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QuerySqlGeneratorDependencies	Service dependencies parameter class for QuerySqlGenerator This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryTranslationPostprocessor	A class that post-processes the translated query. This class allows to process the generated server query expression and the associated shaper expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryTranslationPostprocessorDependencies	Service dependencies parameter class for QueryTranslationPostprocessor This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryTranslationPreprocessor	A class that preprocesses the query before translation. This type is typically used by database providers (and other extensions). It is generally not used in application code.
QueryTranslationPreprocessorDependencies	Service dependencies parameter class for QueryTranslationPreprocessor This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalAggregateMethodCallTranslatorProvider	Provides translations for LINQ MethodCallExpression expressions which represents aggregate methods.
RelationalAggregateMethodCallTranslatorProviderDependencies	Service dependencies parameter class for RelationalAggregateMethodCallTranslatorProvider This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalCollectionShaperExpression	An expression that represents creation of a collection for relational provider in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalCompiledQueryCacheKeyGenerator	Creates keys that uniquely identifies a query. This is used to store and lookup compiled versions of a query in a cache. This type is typically used by database providers (and other extensions). It is generally not used in application code. The service lifetime is Scoped. This means that each DbContext instance will use its own instance of this service. The implementation may depend on other services registered with any lifetime. The implementation does not need to be thread-safe.
RelationalCompiledQueryCacheKeyGeneratorDependencies	Service dependencies parameter class for RelationalCompiledQueryCacheKeyGenerator This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalEvaluatableExpressionFilter	Represents a filter for evaluatable expressions. The service lifetime is Singleton. This means a single instance is used by many DbContext instances. The implementation must be thread-safe. This service cannot depend on services registered as Scoped.
RelationalEvaluatableExpressionFilterDependencies	Service dependencies parameter class for RelationalEvaluatableExpressionFilter This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalGroupByResultExpression	An expression that represents creation of a grouping for relational provider in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalGroupByShaperExpression	An expression that represents creation of a grouping element in ShaperExpression for relational providers. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalMemberTranslatorProvider	Provides translations for LINQ MemberExpression expressions by dispatching to multiple specialized member translators. The service lifetime is Scoped. This means that each DbContext instance will use its own instance of this service. The implementation may depend on other services registered with any lifetime. The implementation does not need to be thread-safe.
RelationalMemberTranslatorProviderDependencies	Service dependencies parameter class for RelationalMemberTranslatorProvider This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalMethodCallTranslatorProvider	Provides translations for LINQ MethodCallExpression expressions by dispatching to multiple specialized method call translators. The service lifetime is Scoped. This means that each DbContext instance will use its own instance of this service. The implementation may depend on other services registered with any lifetime. The implementation does not need to be thread-safe.
RelationalMethodCallTranslatorProviderDependencies	Service dependencies parameter class for RelationalMethodCallTranslatorProvider This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalParameterBasedSqlProcessor	A class that processes the query expression after parameter values are known. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalParameterBasedSqlProcessorDependencies	Service dependencies parameter class for Microsoft.EntityFrameworkCore.Query.Internal.RelationalParameterBasedSqlProcessorFactory This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryableMethodTranslatingExpressionVisitor	A class that translates queryable methods in a query. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryableMethodTranslatingExpressionVisitor.RelationalInferredTypeMappingApplier	A visitor executed at the end of translation, which verifies that all SqlExpression nodes have a type mapping, and applies type mappings inferred for queryable constants (VALUES) and parameters (e.g. OPENJSON) back on their root tables.
RelationalQueryableMethodTranslatingExpressionVisitorDependencies	Service dependencies parameter class for RelationalQueryableMethodTranslatingExpressionVisitor This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryCompilationContext	The primary data structure representing the state/components used during relational query compilation. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryCompilationContextDependencies	Service dependencies parameter class for RelationalQueryCompilationContext This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryContext	The principal data structure used by a compiled relational query during execution. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryContextDependencies	Service dependencies parameter class for RelationalQueryContext This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryRootProcessor	A visitor which adds additional query root nodes during preprocessing.
RelationalQueryTranslationPostprocessor	A class that post-processes the translated query. This class allows to process the generated server query expression and the associated shaper expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryTranslationPostprocessorDependencies	Service dependencies parameter class for RelationalQueryTranslationPostprocessor This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryTranslationPreprocessor	A class that preprocesses the query before translation. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalQueryTranslationPreprocessorDependencies	Service dependencies parameter class for RelationalQueryTranslationPreprocessor This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalShapedQueryCompilingExpressionVisitor	A class that compiles the shaper expression for given shaped query expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalShapedQueryCompilingExpressionVisitorDependencies	Service dependencies parameter class for RelationalShapedQueryCompilingExpressionVisitor This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalSplitCollectionShaperExpression	An expression that represents creation of a collection during split query for relational provider in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalSqlTranslatingExpressionVisitor	A class that translates expressions to corresponding SQL representation. This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalSqlTranslatingExpressionVisitorDependencies	Service dependencies parameter class for RelationalSqlTranslatingExpressionVisitorFactory This type is typically used by database providers (and other extensions). It is generally not used in application code.
RelationalSqlTranslatingExpressionVisitorFactory	This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release. The service lifetime is Scoped. This means that each DbContext instance will use its own instance of this service. The implementation may depend on other services registered with any lifetime. The implementation does not need to be thread-safe.
RelationalStructuralTypeShaperExpression	An expression that represents creation of an entity instance for a relational provider in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
ReplacingExpressionVisitor	An expression visitor that replaces one expression with another in given expression tree. This type is typically used by database providers (and other extensions). It is generally not used in application code.
SetPropertyCalls<TSource>	Supports specifying property and value to be set in ExecuteUpdate method with chaining multiple calls for updating multiple columns. This type does not have any constructor or implementation since it is used inside LINQ query solely for the purpose of creating expression tree.
ShapedQueryCompilingExpressionVisitor	A class that compiles the shaper expression for given shaped query expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
ShapedQueryCompilingExpressionVisitorDependencies	Service dependencies parameter class for ShapedQueryCompilingExpressionVisitor This type is typically used by database providers (and other extensions). It is generally not used in application code.
ShapedQueryExpression	An expression that combines a query expression and shaper expression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
SqlExpressionFactory	A factory for creating SqlExpression instances.
SqlExpressionFactoryDependencies	Service dependencies parameter class for SqlExpressionFactory This type is typically used by database providers (and other extensions). It is generally not used in application code.
SqlExpressionVisitor	A class that visits a SQL expression tree. This type is typically used by database providers (and other extensions). It is generally not used in application code.
SqlNullabilityProcessor	A class that processes a SQL tree based on nullability of nodes to apply null semantics in use and optimize it based on parameter values. This type is typically used by database providers (and other extensions). It is generally not used in application code.
StructuralTypeProjectionExpression	An expression that represents an entity in the projection of SelectExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
StructuralTypeShaperExpression	An expression that represents creation of a structural type instance in ShaperExpression. This type is typically used by database providers (and other extensions). It is generally not used in application code.
TransparentIdentifierFactory	A factory to create transparent identifier to create during query processing. Transparent identifier is struct of outer and inner elements which is generally created as a result of join methods as intermediate type to hold values from both sources. This type is typically used by database providers (and other extensions). It is generally not used in application code.

Structs

CompiledQueryCacheKeyGenerator.CompiledQueryCacheKey	A key that uniquely identifies a query. This is used to store and lookup compiled versions of a query in a cache. This type is typically used by database providers (and other extensions). It is generally not used in application code.
EntityMaterializerSourceParameters	Parameter object for IEntityMaterializerSource.
RelationalCompiledQueryCacheKeyGenerator.RelationalCompiledQueryCacheKey	A key that uniquely identifies a query. This is used to store and lookup compiled versions of a query in a cache. This type is typically used by database providers (and other extensions). It is generally not used in application code.

Interfaces

IAggregateMethodCallTranslator	A SQL translator for LINQ MethodCallExpression expression representing an aggregate function. This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IAggregateMethodCallTranslatorPlugin	Represents plugin for IAggregateMethodCallTranslator.
IAggregateMethodCallTranslatorProvider	Provides translations for LINQ MethodCallExpression expressions which represents aggregate methods.
IAsyncQueryProvider	Defines method to execute queries asynchronously that are described by an IQueryable object.
ICompiledQueryCacheKeyGenerator	Creates keys that uniquely identifies a query. This is used to store and lookup compiled versions of a query in a cache. This type is typically used by database providers (and other extensions). It is generally not used in application code.
IEntityMaterializerSource	Defines a source for generating Expression trees that read values from a ValueBuffer or creates entity instances. This type is typically used by database providers (and other extensions). It is generally not used in application code.
IEvaluatableExpressionFilter	Represents a filter for evaluatable expressions.
IEvaluatableExpressionFilterPlugin	Represents a plugin evaluatable expression filter.
IIncludableQueryable<TEntity,TProperty>	Supports queryable Include/ThenInclude chaining operators.
IMemberTranslator	A SQL translator for LINQ MemberExpression expression. This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IMemberTranslatorPlugin	Represents plugin for IMemberTranslator.
IMemberTranslatorProvider	Provides translations for LINQ MemberExpression expressions.
IMethodCallTranslator	A SQL translator for LINQ MethodCallExpression expression. This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IMethodCallTranslatorPlugin	Represents plugin for IMethodCallTranslator.
IMethodCallTranslatorProvider	Provides translations for LINQ MethodCallExpression expressions which represents scalar methods.
INavigationExpansionExtensibilityHelper	Service which helps with various aspects of navigation expansion extensibility.
IPrintableExpression	An interface that allows printing via ExpressionPrinter. This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IQueryableMethodTranslatingExpressionVisitorFactory	A factory for creating QueryableMethodTranslatingExpressionVisitor instances.
IQueryCompilationContextFactory	A factory for creating QueryCompilationContext instances.
IQueryContextFactory	Factory for QueryContext instances.
IQueryingEnumerable	Interface that can be implemented by a database provider's IEnumerable implementation to provide the query string for debugging purposes. This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IQuerySqlGeneratorFactory	A factory for creating QuerySqlGenerator instances.
IQueryTranslationPostprocessorFactory	A factory for creating QueryTranslationPostprocessor instances.
IQueryTranslationPreprocessorFactory	A factory for creating QueryTranslationPreprocessor instances.
IRelationalParameterBasedSqlProcessorFactory	A factory for creating RelationalParameterBasedSqlProcessor instances.
IRelationalQueryStringFactory	Implemented by database providers to generate the query string for ToQueryString(IQueryable). This interface is typically used by database providers (and other extensions). It is generally not used in application code.
IRelationalSqlTranslatingExpressionVisitorFactory	A factory for creating RelationalSqlTranslatingExpressionVisitor instances.
IShapedQueryCompilingExpressionVisitorFactory	A factory for creating ShapedQueryCompilingExpressionVisitor instances.
ISqlExpressionFactory	A factory for creating SqlExpression instances.

Enums

ResultCardinality

An enum that represents the cardinality of query result. This enum is typically used by database providers (and other extensions). It is generally not used in application code.