SqlServerDbFunctionsExtensions.VectorDistance<T> Method
Definition
Important
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Calculates the distance between two vectors using a specified distance metric.
public static double VectorDistance<T>(this Microsoft.EntityFrameworkCore.DbFunctions _, string distanceMetric, Microsoft.Data.SqlTypes.SqlVector<T> vector1, Microsoft.Data.SqlTypes.SqlVector<T> vector2) where T : struct;static member VectorDistance : Microsoft.EntityFrameworkCore.DbFunctions * string * Microsoft.Data.SqlTypes.SqlVector<'T (requires 'T : struct)> * Microsoft.Data.SqlTypes.SqlVector<'T (requires 'T : struct)> -> double (requires 'T : struct)<Extension()>
Public Function VectorDistance(Of T As Structure) (_ As DbFunctions, distanceMetric As String, vector1 As SqlVector(Of T), vector2 As SqlVector(Of T)) As DoubleType Parameters
- T
Parameters
The DbFunctions instance.
- distanceMetric
- String
A string with the name of the distance metric to use to calculate the distance between the two given vectors. The following distance
metrics are supported: cosine, euclidean or dot.
- vector1
- SqlVector<T>
The first vector.
- vector2
- SqlVector<T>
The second vector.
Returns
Remarks
Vector distance is always exact and doesn't use any vector index, even if available.
