where句を使用して値に挿入する

IF NOT EXISTS(SELECT 1 FROM [MyDB].[dbo].[Accounts] WHERE MyID = @MyID)
    INSERT INTO [MyDB].[dbo].[Accounts]
        (MyID, Phone, MyDate, Agent, Charge, Vendor)
        VALUES 
        (@MyID, @Phone, @MyDATE, @Agent, @Charge, @Vendor)