p_cloumns varchar(500),p_tables varchar(100),p_where varchar(4000),p_order varchar(100),p_pageindex int,p_pagesize int,out p_recordcount int,out p_pagecount int  $:begin     declare v_sqlcounts varchar(4000);     declare v_sqlselect varchar(4000); [b] #拼接查询总记录的SQL语句 [/b]   set v_sqlcounts = concat('select count(*) into @recordcount from ',p_tables,p_where);     #select v_sqlcounts;leave $;    set @sqlcounts = v_sqlcounts;    prepare stmt from @sqlcounts;         execute stmt;   deallocate prepare stmt; [b]   #获取动态SQL语句返回值 [/b]  set p_recordcount = @recordcount; [b]  #根据总记录跳数计算出总页数 [/b]   set p_pagecount = ceiling((p_recordcount+0.0)/p_pagesize);    if p_pageindex <1 then        set p_pageindex = 1;      elseif p_pageindex > p_pagecount and p_pagecount <> 0 then        set p_pageindex = p_pagecount;    end if;   [b]#拼接分页查询记录的动态SQL语句 [/b]   set v_sqlselect = concat('select ',p_cloumns,' from ',p_tables,p_where,if(p_order is not null,p_order,''),' limit ',(p_pageindex-1)*p_pagesize,' , ',p_pagesize);    #select v_sqlselect;leave $;    set @sqlselect = v_sqlselect;     prepare stmtselect from @sqlselect;    execute stmtselect;     deallocate prepare stmtselect;    end $

[b]#拼接查询总记录的SQL语句[/b]   set v_sqlcounts = concat('select count(*) into @recordcount from ',v_tables,v_where);   set @sqlcounts := v_sqlcounts;   [b]#预处理动态SQL   [/b]prepare stmt from @sqlcounts;   [b]#传递动态SQL内参数[/b]   set @s1= categoryid;   execute stmt using @s1;   deallocate prepare stmt;   [b]#获取动态SQL语句返回值   [/b]set recordcount = @recordcount; 

#根据总记录跳数计算出总页数   set pagecount = ceiling((recordcount+0.0)/pagesize);   if pageindex <1 then      set pageindex = 1;   elseif pageindex > pagecount then      set pageindex = pagecount;   else      select pageindex,pagecount;   end if;