Move from the hand.

Shogi.Database/Session/Stored Procedures/CreateMove.sql

@@ -1,8 +1,8 @@
 CREATE PROCEDURE [session].[CreateMove]
 	@To					VARCHAR(2),
-	@From				VARCHAR(2),
-	@IsPromotion		BIT,
-	@PieceFromHand		NVARCHAR(13),
+	@From				VARCHAR(2) = NULL,
+	@IsPromotion		BIT = 0,
+	@PieceFromHand		NVARCHAR(13) = NULL,
 	@SessionName		[session].[SessionName]
 AS
 
@@ -19,7 +19,7 @@ BEGIN
 		WHERE [Name] = @SessionName;
 
 		DECLARE @PieceIdFromhand INT = NULL;
-		SELECT @PieceIdFromhand
+		SELECT @PieceIdFromhand = Id
 		FROM [session].[Piece]
 		WHERE [Name] = @PieceFromHand;
 

Shogi.Database/Session/Stored Procedures/ReadUsersBySession.sql

@@ -0,0 +1,13 @@
+CREATE PROCEDURE [session].[ReadUsersBySession]
+	@SessionName [session].[SessionName]
+AS
+
+SELECT
+	p1.[Name] as Player1Name,
+	p1.DisplayName as Player1DisplayName,
+	p2.[Name] as Player2Name,
+	p2.DisplayName as Player2Displayname
+FROM [session].[Session] sess 
+	INNER JOIN [user].[User] p1	ON sess.Player1Id = p1.Id
+	LEFT JOIN [user].[User] p2 on sess.Player2Id = p2.Id
+WHERE sess.[Name] = @SessionName;

Shogi.Database/Session/Tables/Move.sql

@@ -4,12 +4,19 @@
 	[SessionId]			BIGINT NOT NULL,
 	[To]				VARCHAR(2) NOT NULL,
 	[From]				VARCHAR(2) NULL,
-	[IsPromotion]		BIT NULL,
-	[PieceIdFromHand]	INT NULL
+	[PieceIdFromHand]	INT NULL,
+	[IsPromotion]		BIT DEFAULT 0
 
 	CONSTRAINT [Cannot end where you start]
 		CHECK ([From] <> [To]),
 
+	CONSTRAINT [Move cannot start from two places]
+		CHECK (
+			( [From] IS NOT NULL AND [PieceIdFromHand] IS NULL )
+			OR
+			( [From] IS NULL AND [PieceIdFromhand] IS NOT NULL )
+		),
+
 	CONSTRAINT FK_Move_Session FOREIGN KEY (SessionId) REFERENCES [session].[Session] (Id)
 		ON DELETE CASCADE
 		ON UPDATE CASCADE,