create, read, playercount

Shogi.Database/Session/Tables/Session.sql

@@ -4,13 +4,12 @@
 	[Name]		[session].[SessionName] UNIQUE,
 	Player1Id	BIGINT NOT NULL,
 	Player2Id	BIGINT NULL,
-	BoardState	[session].[JsonDocument] NOT NULL,
 	Created		DATETIMEOFFSET NOT NULL DEFAULT SYSDATETIMEOFFSET(),
 
-	CONSTRAINT [BoardState must be json] CHECK (isjson(BoardState)=1),
 	CONSTRAINT FK_Player1_User FOREIGN KEY (Player1Id) REFERENCES [user].[User] (Id)
 		ON DELETE CASCADE
 		ON UPDATE CASCADE,
+
 	CONSTRAINT FK_Player2_User FOREIGN KEY (Player2Id) REFERENCES [user].[User] (Id)
 		ON DELETE NO ACTION
 		ON UPDATE NO ACTION