ANYELEMENT (Entity SQL)
Extracts an element from a multivalued collection.
ANYELEMENT ( expression )
Arguments
- expression
Any valid query expression that returns a collection to extract an element from.
Return Value
A single element in the collection or an arbitrary element if the collection has more than one; if the collection is empty, returns null. If
collection
is a collection of type Collection<T>, thenANYELEMENT(collection)
is a valid expression that yields an instance of type T.
Remarks
ANYELEMENT extracts an arbitrary element from a multivalued collection. For example, the following example attempts to extract a singleton element from the set Customers
.
ELEMENT(Customers)
Example
The following Entity SQL query uses the ANYELEMENT operator to extract an element from a multivalued collection. The query is based on the AdventureWorks Sales Model. To compile and run this query, follow these steps:
Follow the procedure in How to: Execute a Query that Returns StructuralType Results (EntityClient).
Pass the following query as an argument to the
ExecuteStructuralTypeQuery
method:
anyelement((SELECT VALUE product from AdventureWorksEntities.Product as
product where product.ListPrice = 125))
The output is shown below:
ProductID: 842
Name: Touring-Panniers, Large
ProductNumber: PA-T100
MakeFlag: False
...
See Also
Concepts
Entity SQL Reference
Nullable Structured Types (Entity SQL)