sqlserver 最优分页 源码

        /// <summary>         /// 构造分页sql         /// </summary>         /// <param name="sql">sql分页前</param>         /// <param name="orderColumn">排序列</param>         /// <param name="rowIndex">开始位置</param>         /// <param name="rowNum">页大小</param>         /// <returns></returns>           static public string buildFysql(string sql,string orderColumn,int rowIndex,            int rowNum )         {             StringBuilder sb = new StringBuilder();             sb.Append(" SELECT T1.* FROM ( SELECT ROW_NUMBER() OVER (ORDER BY T0. ");             sb.Append(orderColumn);             sb.Append(" ) AS [ROW_NUMBER], T0.* FROM (   ");             sb.Append(sql);//29 AND 30             sb.Append("  ) AS T0 ) AS T1 WHERE T1.ROW_NUMBER BETWEEN ").Append(rowIndex ).Append(" AND ").Append(rowIndex+rowNum-1);                         return sb.ToString();         }