SqlFunctions.DateDiff Method (String, Nullable<TimeSpan>, Nullable<TimeSpan>)
Returns the count of the specified datepart boundaries crossed between the specified start date and end date.
Namespace: System.Data.Objects.SqlClient
Assembly: System.Data.Entity (in System.Data.Entity.dll)
[EdmFunctionAttribute("SqlServer", "DATEDIFF")] public static Nullable<int> DateDiff( string datePartArg, Nullable<TimeSpan> startDate, Nullable<TimeSpan> endDate )
Parameters
- datePartArg
- Type: System.String
The part of the date to calculate the differing number of time intervals.
- startDate
- Type: System.Nullable<TimeSpan>
The first date.
- endDate
- Type: System.Nullable<TimeSpan>
The second date.
You cannot call this function directly. This function can only appear within a LINQ to Entities query.
This function is translated to a corresponding function in the database. For information about the corresponding SQL Server function, see DATEDIFF (Transact-SQL).
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
