u2f db updates

src/Sql/dbo/Stored Procedures/U2f_DeleteOld.sql

@@ -0,0 +1,19 @@
+CREATE PROCEDURE [dbo].[U2f_DeleteOld]
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    DECLARE @BatchSize INT = 100
+    DECLARE @Threshold DATETIME2(7) = DATEADD (day, -7, GETUTCDATE())
+
+    WHILE @BatchSize > 0
+    BEGIN
+        DELETE TOP(@BatchSize)
+        FROM
+            [dbo].[U2f]
+        WHERE
+            [CreationDate] < @Threshold
+
+        SET @BatchSize = @@ROWCOUNT
+    END
+END

src/Sql/dbo/Tables/U2f.sql

@@ -10,3 +10,13 @@
     CONSTRAINT [FK_U2f_User] FOREIGN KEY ([UserId]) REFERENCES [dbo].[User] ([Id])
 );
 
+
+GO
+CREATE NONCLUSTERED INDEX [IX_U2f_CreationDate]
+    ON [dbo].[U2f]([CreationDate] ASC)
+
+
+GO
+CREATE NONCLUSTERED INDEX [IX_U2f_UserId]
+    ON [dbo].[U2f]([UserId] ASC);
+