Query

Código:
Declare @login varchar(20) = 'admin'    -- Login do Player
Declare @WC int  = 100     -- Quantidade de WCoinC
Declare @WP int  = 100    -- Quantidade de WCoinP
Declare @GP int  = 0      -- Quantidade de GoblinPoint

begin

		if exists (select AccountID from CashShopData where AccountID = @login)
		 UPDATE CashShopData SET [WCoinC] = [WCoinC] + @WC, [WCoinP] = [WCoinP] + @WP, [GoblinPoint] = [GoblinPoint] + @GP WHERE [AccountID] = @login
		else
		 INSERT INTO CashShopData (AccountID,WCoinC,WCoinP,GoblinPoint) VALUES (@login,@WC,@WP,@GP)

end