지원되는 LINQ 메서드 및 지원되지 않는 LINQ 메서드(LINQ to Entities)

  • 아티클

이 단원에서는 LINQ to Entities 쿼리에서 지원되거나 지원되지 않는 LINQ(Language-Integrated Query) 표준 쿼리 연산자에 대한 정보를 제공합니다. LINQ 표준 쿼리 연산자 중 상당수는 정수 인수를 허용하는 오버로드된 버전이 있습니다. 정수 인수는 연산 대상인 시퀀스에서 0부터 시작하는 인덱스, IEqualityComparer 또는 IComparer에 해당합니다. 별도로 명시하지 않는 한 오버로드된 버전의 이 LINQ 표준 쿼리 연산자는 지원되지 않으며, 이 버전을 사용할 경우 예외가 throw됩니다.

프로젝션 및 제한 메서드

대부분의 LINQ 프로젝션 및 제한 메서드가 LINQ to Entities 쿼리에서 지원되지만 위치 인수를 허용하는 메서드를 예외입니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 프로젝션 및 제한 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

Select

지원됨

 
Function Select(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> Select<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TResult>> selector
)

Select

지원되지 않음

 
Function Select(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Integer, TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> Select<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, TResult>> selector
)

SelectMany

지원됨

 
Function SelectMany(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, IEnumerable(Of TResult))) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> SelectMany<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, IEnumerable<TResult>>> selector
)

SelectMany

지원되지 않음

 
Function SelectMany(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Integer, IEnumerable(Of TResult))) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> SelectMany<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, IEnumerable<TResult>>> selector
)

SelectMany

지원됨

 
Function SelectMany(Of TSource, TCollection, TResult) ( _
source As IQueryable(Of TSource), _
collectionSelector As Expression(Of Func(Of TSource, IEnumerable(Of TCollection))), _
resultSelector As Expression(Of Func(Of TSource, TCollection, TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> SelectMany<TSource, TCollection, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, IEnumerable<TCollection>>> collectionSelector,
Expression<Func<TSource, TCollection, TResult>> resultSelector
)

SelectMany

지원되지 않음

 
Function SelectMany(Of TSource, TCollection, TResult) ( _
source As IQueryable(Of TSource), _
collectionSelector As Expression(Of Func(Of TSource, Integer, IEnumerable(Of TCollection))), _
resultSelector As Expression(Of Func(Of TSource, TCollection, TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> SelectMany<TSource, TCollection, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, IEnumerable<TCollection>>> collectionSelector,
Expression<Func<TSource, TCollection, TResult>> resultSelector
)

Where

지원됨

 
Function Where(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Where<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Where

지원되지 않음

 
Function Where(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Integer, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Where<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, bool>> predicate
)

조인 메서드

LINQ 조인 메서드가 LINQ to Entities 에서 지원되지만 IEqualityComparer를 허용하는 메서드는 예외입니다. 이 비교자는 데이터 소스로 변환될 수 없기 때문입니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 조인 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

GroupJoin

지원됨

 
Function GroupJoin(Of TOuter, TInner, TKey, TResult) ( _
outer As IQueryable(Of TOuter), _
inner As IEnumerable(Of TInner), _
outerKeySelector As Expression(Of Func(Of TOuter, TKey)), _
innerKeySelector As Expression(Of Func(Of TInner, TKey)), _
resultSelector As Expression(Of Func(Of TOuter, IEnumerable(Of TInner), TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(
this IQueryable<TOuter> outer,
IEnumerable<TInner> inner,
Expression<Func<TOuter, TKey>> outerKeySelector,
Expression<Func<TInner, TKey>> innerKeySelector,
Expression<Func<TOuter, IEnumerable<TInner>, TResult>> resultSelector
)

GroupJoin

지원되지 않음

 
Function GroupJoin(Of TOuter, TInner, TKey, TResult) ( _
outer As IQueryable(Of TOuter), _
inner As IEnumerable(Of TInner), _
outerKeySelector As Expression(Of Func(Of TOuter, TKey)), _
innerKeySelector As Expression(Of Func(Of TInner, TKey)), _
resultSelector As Expression(Of Func(Of TOuter, IEnumerable(Of TInner), TResult)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(
this IQueryable<TOuter> outer,
IEnumerable<TInner> inner,
Expression<Func<TOuter, TKey>> outerKeySelector,
Expression<Func<TInner, TKey>> innerKeySelector,
Expression<Func<TOuter, IEnumerable<TInner>, TResult>> resultSelector,
IEqualityComparer<TKey> comparer
)

Join

지원됨

 
Function Join(Of TOuter, TInner, TKey, TResult) ( _
outer As IQueryable(Of TOuter), _
inner As IEnumerable(Of TInner), _
outerKeySelector As Expression(Of Func(Of TOuter, TKey)), _
innerKeySelector As Expression(Of Func(Of TInner, TKey)), _
resultSelector As Expression(Of Func(Of TOuter, TInner, TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> Join<TOuter, TInner, TKey, TResult>(
this IQueryable<TOuter> outer,
IEnumerable<TInner> inner,
Expression<Func<TOuter, TKey>> outerKeySelector,
Expression<Func<TInner, TKey>> innerKeySelector,
Expression<Func<TOuter, TInner, TResult>> resultSelector
)

Join

지원되지 않음

 
 Function Join(Of TOuter, TInner, TKey, TResult) ( _
outer As IQueryable(Of TOuter), _
inner As IEnumerable(Of TInner), _
outerKeySelector As Expression(Of Func(Of TOuter, TKey)), _
innerKeySelector As Expression(Of Func(Of TInner, TKey)), _
resultSelector As Expression(Of Func(Of TOuter, TInner, TResult)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> Join<TOuter, TInner, TKey, TResult>(
this IQueryable<TOuter> outer,
IEnumerable<TInner> inner,
Expression<Func<TOuter, TKey>> outerKeySelector,
Expression<Func<TInner, TKey>> innerKeySelector,
Expression<Func<TOuter, TInner, TResult>> resultSelector,
IEqualityComparer<TKey> comparer
)

Set 메서드

대부분의 LINQ Set 메서드가 LINQ to Entities 쿼리에서 지원되지만 EqualityComparer를 사용하는 메서드는 예외입니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 Set 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

All

지원됨

 
Function All(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Boolean
 
bool All<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Any

지원됨

 
Function Any(Of TSource) ( _
source As IQueryable(Of TSource) _
) As Boolean
 
bool Any<TSource>(
this IQueryable<TSource> source
)

Any

지원됨

 
Function Any(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Boolean
 
bool Any<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Contains

지원됨

 
Function Contains(Of TSource) ( _
source As IQueryable(Of TSource), _
item As TSource _
) As Boolean
 
bool Contains<TSource>(
this IQueryable<TSource> source,
TSource item
)

Contains

지원되지 않음

 
Function Contains(Of TSource) ( _
source As IQueryable(Of TSource), _
item As TSource, _
comparer As IEqualityComparer(Of TSource) _
) As Boolean
 
bool Contains<TSource>(
this IQueryable<TSource> source,
TSource item,
IEqualityComparer<TSource> comparer
)

Concat

지원됨(순서가

유지되지 않을 수 있음)

 
Function Concat(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Concat<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

DefaultIfEmpty

지원됨

 
Function DefaultIfEmpty(Of TSource) ( _
source As IQueryable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> DefaultIfEmpty<TSource>(
this IQueryable<TSource> source
)

DefaultIfEmpty

지원됨

 
Function DefaultIfEmpty(Of TSource) ( _
source As IQueryable(Of TSource), _
defaultValue As TSource _
) As IQueryable(Of TSource)
 
IQueryable<TSource> DefaultIfEmpty<TSource>(
this IQueryable<TSource> source,
TSource defaultValue
)

Distinct

지원됨

 
Function Distinct(Of TSource) ( _
source As IQueryable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Distinct<TSource>(
this IQueryable<TSource> source
)

Distinct

지원되지 않음

 
Function Distinct(Of TSource) ( _
source As IQueryable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Distinct<TSource>(
this IQueryable<TSource> source,
IEqualityComparer<TSource> comparer
)

Except

지원됨

 
Function Except(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Except<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Except

지원되지 않음

 
Function Except(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Except<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

Intersect

지원됨

 
Function Intersect(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Intersect<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Intersect

지원되지 않음

 
Function Intersect(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Intersect<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

Union

지원됨

 
Function Union(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Union<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Union

지원되지 않음

 
Function Union(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Union<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

정렬 메서드

대부분의 LINQ 정렬 메서드가 LINQ to Entities 에서 지원되지만 IComparer를 허용하는 메서드는 예외입니다. 이 비교자는 데이터 소스로 변환될 수 없기 때문입니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 정렬 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

OrderBy

지원됨

 
Function OrderBy(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> OrderBy<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector
)

OrderBy

지원되지 않음

 
Function OrderBy(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
comparer As IComparer(Of TKey) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> OrderBy<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
IComparer<TKey> comparer
)

OrderByDescending

지원됨

 
Function OrderByDescending(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> OrderByDescending<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector
)

OrderByDescending

지원되지 않음

 
Function OrderByDescending(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
comparer As IComparer(Of TKey) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> OrderByDescending<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
IComparer<TKey> comparer
)

ThenBy

지원됨

 
Function ThenBy(Of TSource, TKey) ( _
source As IOrderedQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> ThenBy<TSource, TKey>(
this IOrderedQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector
)

ThenBy

지원되지 않음

 
Function ThenBy(Of TSource, TKey) ( _
source As IOrderedQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
comparer As IComparer(Of TKey) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> ThenBy<TSource, TKey>(
this IOrderedQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
IComparer<TKey> comparer
)

ThenByDescending

지원됨

 
Function ThenByDescending(Of TSource, TKey) ( _
source As IOrderedQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> ThenByDescending<TSource, TKey>(
this IOrderedQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector
)

ThenByDescending

지원되지 않음

 
Function ThenByDescending(Of TSource, TKey) ( _
source As IOrderedQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
comparer As IComparer(Of TKey) _
) As IOrderedQueryable(Of TSource)
 
IOrderedQueryable<TSource> ThenByDescending<TSource, TKey>(
this IOrderedQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
IComparer<TKey> comparer
)

Reverse

지원되지 않음

 
Function Reverse(Of TSource) ( _
source As IQueryable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Reverse<TSource>(
this IQueryable<TSource> source
)

그룹화 메서드

대부분의 LINQ 그룹화 메서드가 LINQ to Entities 에서 지원되지만 IEqualityComparer를 허용하는 메서드는 예외입니다. 이 비교자는 데이터 소스로 변환될 수 없기 때문입니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 그룹화 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

GroupBy

지원됨

 
Function GroupBy(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IQueryable(Of IGrouping(Of TKey, TSource))
 
IQueryable<IGrouping<TKey, TSource>> GroupBy<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector
)

GroupBy

지원되지 않음

 
Function GroupBy(Of TSource, TKey) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of IGrouping(Of TKey, TSource))
 
IQueryable<IGrouping<TKey, TSource>> GroupBy<TSource, TKey>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
IEqualityComparer<TKey> comparer
)

GroupBy

지원됨

 
Function GroupBy(Of TSource, TKey, TElement) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
elementSelector As Expression(Of Func(Of TSource, TElement)) _
) As IQueryable(Of IGrouping(Of TKey, TElement))
 
IQueryable<IGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TSource, TElement>> elementSelector
)

GroupBy

지원됨

 
Function GroupBy(Of TSource, TKey, TResult) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
resultSelector As Expression(Of Func(Of TKey, IEnumerable(Of TSource), TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupBy<TSource, TKey, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TKey, IEnumerable<TSource>, TResult>> resultSelector
)

GroupBy

지원되지 않음

 
Function GroupBy(Of TSource, TKey, TElement) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
elementSelector As Expression(Of Func(Of TSource, TElement)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of IGrouping(Of TKey, TElement))
 
IQueryable<IGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TSource, TElement>> elementSelector,
IEqualityComparer<TKey> comparer

GroupBy

지원됨

 
Function GroupBy(Of TSource, TKey, TElement, TResult) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
elementSelector As Expression(Of Func(Of TSource, TElement)), _
resultSelector As Expression(Of Func(Of TKey, IEnumerable(Of TElement), TResult)) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupBy<TSource, TKey, TElement, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TSource, TElement>> elementSelector,
Expression<Func<TKey, IEnumerable<TElement>, TResult>> resultSelector
)

GroupBy

지원되지 않음

 
Function GroupBy(Of TSource, TKey, TResult) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
resultSelector As Expression(Of Func(Of TKey, IEnumerable(Of TSource), TResult)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupBy<TSource, TKey, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TKey, IEnumerable<TSource>, TResult>> resultSelector,
IEqualityComparer<TKey> comparer
)

GroupBy

지원되지 않음

 
Function GroupBy(Of TSource, TKey, TElement, TResult) ( _
source As IQueryable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
elementSelector As Expression(Of Func(Of TSource, TElement)), _
resultSelector As Expression(Of Func(Of TKey, IEnumerable(Of TElement), TResult)), _
comparer As IEqualityComparer(Of TKey) _
) As IQueryable(Of TResult)
 
IQueryable<TResult> GroupBy<TSource, TKey, TElement, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TSource, TElement>> elementSelector,
Expression<Func<TKey, IEnumerable<TElement>, TResult>> resultSelector,
IEqualityComparer<TKey> comparer
)

집계 메서드

기본 데이터 형식을 허용하는 대부분의 집계 메서드가 LINQ to Entities 에서 지원됩니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 집계 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

Aggregate

지원되지 않음

 
Function Aggregate(Of TSource) ( _
source As IQueryable(Of TSource), _
func As Expression(Of Func(Of TSource, TSource, TSource)) _
) As TSource
 
TSource Aggregate<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, TSource, TSource>> func
)

Aggregate

지원되지 않음

 
Function Aggregate(Of TSource, TAccumulate) ( _
source As IQueryable(Of TSource), _
seed As TAccumulate, _
func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)) _
) As TAccumulate
 
TAccumulate Aggregate<TSource, TAccumulate>(
this IQueryable<TSource> source,
TAccumulate seed,
Expression<Func<TAccumulate, TSource, TAccumulate>> func
)

Aggregate

지원되지 않음

 
Function Aggregate(Of TSource, TAccumulate, TResult) ( _
source As IQueryable(Of TSource), _
seed As TAccumulate, _
func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)), _
selector As Expression(Of Func(Of TAccumulate, TResult)) _
) As TResult
 
TResult Aggregate<TSource, TAccumulate, TResult>(
this IQueryable<TSource> source,
TAccumulate seed,
Expression<Func<TAccumulate, TSource, TAccumulate>> func,
Expression<Func<TAccumulate, TResult>> selector
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Decimal) _
) As Decimal
 
decimal Average(
this IQueryable<decimal> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Double) _
) As Double
 
double Average(
this IQueryable<double> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Integer) _
) As Double
 
double Average(
this IQueryable<int> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Long) _
) As Double
 
double Average(
this IQueryable<long> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Nullable(Of Decimal)) _
) As Nullable(Of Decimal)
 
Nullable<decimal> Average(
this IQueryable<Nullable<decimal>> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Nullable(Of Double)) _
) As Nullable(Of Double)
 
Nullable<double> Average(
this IQueryable<Nullable<double>> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Nullable(Of Integer)) _
) As Nullable(Of Double)
 
Nullable<double> Average(
this IQueryable<Nullable<int>> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Nullable(Of Long)) _
) As Nullable(Of Double)
 
Nullable<double> Average(
this IQueryable<Nullable<long>> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Nullable(Of Single)) _
) As Nullable(Of Single)
 
Nullable<float> Average(
this IQueryable<Nullable<float>> source
)

Average

지원됨

 
Function Average ( _
source As IQueryable(Of Single) _
) As Single
 
float Average(
this IQueryable<float> source
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Integer)) _
) As Double
 
double Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Integer))) _
) As Nullable(Of Double)
 
Nullable<double> Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<int>>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Long)) _
) As Double
 
double Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, long>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Long))) _
) As Nullable(Of Double)
 
Nullable<double> Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<long>>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Single)) _
) As Single
 
float Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, float>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Single))) _
) As Nullable(Of Single)
 
Nullable<float> Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<float>>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Double)) _
) As Double
 
double Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, double>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Double))) _
) As Nullable(Of Double)
 
Nullable<double> Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<double>>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Decimal)) _
) As Decimal
 
decimal Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, decimal>> selector
)

Average

지원되지 않음

 
Function Average(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Decimal))) _
) As Nullable(Of Decimal)
 
Nullable<decimal> Average<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<decimal>>> selector
)

Count

지원됨

 
Function Count(Of TSource) ( _
source As IQueryable(Of TSource) _
) As Integer
 
int Count<TSource>(
this IQueryable<TSource> source
)

Count

지원되지 않음

 
Function Count(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Integer
 
int Count<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

LongCount

지원됨

 
Function LongCount(Of TSource) ( _
source As IQueryable(Of TSource) _
) As Long
 
long LongCount<TSource>(
this IQueryable<TSource> source
)

LongCount

지원되지 않음

 
Function LongCount(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Long
 
long LongCount<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Max

지원됨

 
Function Max(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource Max<TSource>(
this IQueryable<TSource> source
)

Max

지원되지 않음

 
Function Max(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, TResult)) _
) As TResult
 
TResult Max<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TResult>> selector
)

Min

지원됨

 
Function Min(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource Min<TSource>(
this IQueryable<TSource> source
)

Min

지원되지 않음

 
Function Min(Of TSource, TResult) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, TResult)) _
) As TResult
 
TResult Min<TSource, TResult>(
this IQueryable<TSource> source,
Expression<Func<TSource, TResult>> selector
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Decimal) _
) As Decimal
 
decimal Sum(
this IQueryable<decimal> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Double) _
) As Double
 
double Sum(
this IQueryable<double> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Integer) _
) As Integer
 
int Sum(
this IQueryable<int> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Long) _
) As Long
 
long Sum(
this IQueryable<long> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Nullable(Of Decimal)) _
) As Nullable(Of Decimal)
 
Nullable<decimal> Sum(
this IQueryable<Nullable<decimal>> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Nullable(Of Double)) _
) As Nullable(Of Double)
 
Function Sum ( _
source As IQueryable(Of Nullable(Of Double)) _
) As Nullable(Of Double)Nullable<double> Sum(
this IQueryable<Nullable<double>> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Nullable(Of Integer)) _
) As Nullable(Of Integer)
 
Nullable<int> Sum(
this IQueryable<Nullable<int>> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Nullable(Of Long)) _
) As Nullable(Of Long)
 
Nullable<long> Sum(
this IQueryable<Nullable<long>> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Nullable(Of Single)) _
) As Nullable(Of Single)
 
Nullable<float> Sum(
this IQueryable<Nullable<float>> source
)

Sum

지원됨

 
Function Sum ( _
source As IQueryable(Of Single) _
) As Single
 
float Sum(
this IQueryable<float> source
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Integer)) _
) As Integer
 
int Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Integer))) _
) As Nullable(Of Integer)
 
Nullable<int> Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<int>>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Long)) _
) As Long
 
long Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, long>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Long))) _
) As Nullable(Of Long)
 
Nullable<long> Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<long>>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Single))) _
) As Nullable(Of Single)
 
Nullable<float> Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<float>>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Single)) _
) As Single
 
float Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, float>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Double)) _
) As Double
 
double Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, double>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Double))) _
) As Nullable(Of Double)
 
Nullable<double> Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<double>>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Decimal)) _
) As Decimal
 
decimal Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, decimal>> selector
)

Sum

지원되지 않음

 
Function Sum(Of TSource) ( _
source As IQueryable(Of TSource), _
selector As Expression(Of Func(Of TSource, Nullable(Of Decimal))) _
) As Nullable(Of Decimal)
 
Nullable<decimal> Sum<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, Nullable<decimal>>> selector
)

형식 메서드

CLR 형식 변환 및 테스트를 처리하는 LINQ 표준 쿼리 연산자는 Entity Framework 에서 지원됩니다. 개념적 모델 형식에 매핑되는 CLR 형식만 LINQ to Entities에서 지원됩니다. 개념적 모델 형식의 목록을 보려면 개념적 모델 형식을 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 형식 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

Cast

EDM 기본 형식에 지원됨

 
Function Cast(Of TResult) ( _
source As IQueryable _
) As IQueryable(Of TResult)
 
IQueryable<TResult> Cast<TResult>(
this IQueryable source
)

OfType

EntityType에 지원됨

 
Function OfType(Of TResult) ( _
source As IQueryable _
) As IQueryable(Of TResult)
 
IQueryable<TResult> OfType<TResult>(
this IQueryable source
)

페이징 메서드

많은 LINQ 페이징 메서드는 LINQ to Entities 쿼리에서 지원되지 않습니다. 자세한 내용은 LINQ to Entities 쿼리의 표준 쿼리 연산자를 참조하십시오. 다음 표에서는 지원되거나 지원되지 않는 페이징 메서드를 보여 줍니다.

메서드 지원 Visual Basic 함수 시그니처 C# 메서드 시그니처

ElementAt

지원되지 않음

 
Function ElementAt(Of TSource) ( _
source As IQueryable(Of TSource), _
index As Integer _
) As TSource
 
TSource ElementAt<TSource>(
this IQueryable<TSource> source,
int index
)

ElementAtOrDefault

지원되지 않음

 
Function ElementAtOrDefault(Of TSource) ( _
source As IQueryable(Of TSource), _
index As Integer _
) As TSource
 
TSource ElementAtOrDefault<TSource>(
this IQueryable<TSource> source,
int index
)

First

지원됨

 
Function First(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource First<TSource>(
this IQueryable<TSource> source
)

First

지원됨

 
Function First(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource First<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

FirstOrDefault

지원됨

 
Function FirstOrDefault(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource FirstOrDefault<TSource>(
this IQueryable<TSource> source
)

FirstOrDefault

지원됨

 
Function FirstOrDefault(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource FirstOrDefault<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Last

지원되지 않음

 
Function Last(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource Last<TSource>(
this IQueryable<TSource> source
)

Last

지원되지 않음

 
Function Last(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource Last<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

LastOrDefault

지원되지 않음

 
Function LastOrDefault(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource LastOrDefault<TSource>(
this IQueryable<TSource> source
)

LastOrDefault

지원되지 않음

 
Function LastOrDefault(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource LastOrDefault<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Single

지원됨

 
Function Single(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource Single<TSource>(
this IQueryable<TSource> source
)

Single

지원됨

 
Function Single(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource Single<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

SingleOrDefault

지원됨

 
Function SingleOrDefault(Of TSource) ( _
source As IQueryable(Of TSource) _
) As TSource
 
TSource SingleOrDefault<TSource>(
this IQueryable<TSource> source
)

SingleOrDefault

지원됨

 
Function SingleOrDefault(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As TSource
 
TSource SingleOrDefault<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Skip

지원됨

 
Function Skip(Of TSource) ( _
source As IQueryable(Of TSource), _
count As Integer _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Skip<TSource>(
this IQueryable<TSource> source,
int count
)

SkipWhile

지원되지 않음

 
Function SkipWhile(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> SkipWhile<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

SkipWhile

지원되지 않음

 
Function SkipWhile(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Integer, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> SkipWhile<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, bool>> predicate
)

Take

지원됨

 
Function Take(Of TSource) ( _
source As IQueryable(Of TSource), _
count As Integer _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Take<TSource>(
this IQueryable<TSource> source,
int count
)

TakeWhile

지원되지 않음

 
Function TakeWhile(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> TakeWhile<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

TakeWhile

지원되지 않음

 
Function TakeWhile(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Integer, Boolean)) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> TakeWhile<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, int, bool>> predicate
)

참고 항목

개념

LINQ to Entities 쿼리의 표준 쿼리 연산자