mysql的高效存取过程分页

 10w以上数据的效率比普通分页 快4-5倍
PROCEDURE p_pageList (m_pageNo int , m_perPageCnt int , m_indexcolumn varchar(100), m_column varchar(1000) , m_table varchar(1000) , m_condition varchar(1000), m_orderBy varchar(200) , inout m_totalPageCnt int)
BEGIN
IF m_totalPageCnt >=1 THEN
 SET @sqlCnt = CONCAT('select count(1) into @pageCnt from ',m_table); -- 这条语句很关键，用来得到总数值
 IF m_condition IS NOT NULL AND m_condition <> '' THEN
  SET @sqlCnt = CONCAT(@sqlCnt,' where ',m_condition);
 END IF;
 PREPARE s_cnt from @sqlCnt;
 EXECUTE s_cnt;
 DEALLOCATE PREPARE s_cnt;
 SET m_totalPageCnt = @pageCnt;
else
 SET @pageCnt = 1; -- 总记录数
 SET @limitStart = (m_pageNo - 1)*m_perPageCnt;
 SET @limitEnd = m_perPageCnt;
 SET @sql = CONCAT('select ',m_column,' from ',m_table);  -- 主查询
 SET @wsql = CONCAT('select ',m_indexcolumn,' from ',m_table);  -- 子查询
 IF m_condition IS NOT NULL AND m_condition <> '' THEN
 SET @sql = CONCAT(@sql,' where ',m_condition);
 SET @wsql = CONCAT(@wsql,' where ',m_condition);
 END IF;
 IF  @limitStart<1000 THEN
  IF m_orderBy IS NOT NULL AND m_orderBy <> '' THEN
  SET @sql = CONCAT(@sql,' order by ',m_orderBy);
  END IF;
  SET @sql = CONCAT(@sql, ' limit ', @limitStart, ',', @limitEnd);
 Else
  IF m_orderBy IS NOT NULL AND m_orderBy <> '' THEN
   SET @wsql = CONCAT(@wsql,' o