private string Distinct(UnaryExpression exp) => $"SELECT DISTINCT * FROM ({Serialize(exp.Sub)}) AS this";
private string Count(UnaryExpression exp) => $"SELECT COUNT(*) FROM ({Serialize(exp.Sub)}) AS this";
private string Distinct(UnaryExpression exp) => $"SELECT DISTINCT * FROM ({Serialize(exp.Sub)}) AS this";
private string Count(UnaryExpression exp) => $"SELECT COUNT(*) FROM ({Serialize(exp.Sub)}) AS this";