SQL怎的传递表名

SQL怎样传递表名?

C# code

string a="Table_";string sql = "SELECT 列名 FROM @A WHERE 查询条件";            cmd = new SqlCommand(sql, conn);                       a = a + "1";            cmd.Parameters.AddWithValue("@A", a);

C# code

string a="Table_"; a = a + "1";string sql = string.Format("SELECT 列名 FROM {0} WHERE 查询条件",a);            cmd = new SqlCommand(sql, conn);