实现上千万条数据的分页显示

-- 获取指定页的数据
create procedure getrecordfrompage
    @tblname      varchar(255),       -- 表名
    @fldname      varchar(255),       -- 字段名
    @pagesize     int = 10,           -- 页尺寸
    @pageindex    int = 1,            -- 页码
    @iscount      bit = 0,            -- 返回记录总数, 非 0 值则返回
    @ordertype    bit = 0,            -- 设置排序类型, 非 0 值则降序
    @strwhere     varchar(1000) = ''  -- 查询条件 (注意: 不要加 where)
as

declare @strsql   varchar(6000)       -- 主语句
declare @strtmp   varchar(100)        -- 临时变量
declare @strorder varchar(400)        -- 排序类型

if @ordertype != 0
begin
    set @strtmp = "<(select min"
    set @strorder = " order by [" + @fldname +"] desc"
end
else
begin
    set @strtmp = ">(select max"
    set @strorder = " order by [" + @fldname +"] asc"
end

set @strsql = "select top " + str(@pagesize) + " * from ["
    + @tblname + "] where [" + @fldname + "]" + @strtmp + "(["
    + @fldname + "]) from (select top " + str((@pageindex-1)*@pagesize) + " ["
    + @fldname + "] from [" + @tblname + "]" + @strorder + ") as tbltmp)"
    + @strorder

if @strwhere != ''
    set @strsql = "select top " + str(@pagesize) + " * from ["
        + @tblname + "] where [" + @fldname + "]" + @strtmp + "(["
        + @fldname + "]) from (select top " + str((@pageindex-1)*@pagesize) + " ["
        + @fldname + "] from [" + @tblname + "] where " + @strwhere + " "
        + @strorder + ") as tbltmp) and " + @strwhere + " " + @strorder

if @pageindex = 1
begin
    set @strtmp = ""
    if @strwhere != ''
        set @strtmp = " where " + @strwhere

    set @strsql = "select top " + str(@pagesize) + " * from ["
        + @tblname + "]" + @strtmp + " " + @strorder
end

if @iscount != 0
    set @strsql = "select count(*) as total from [" + @tblname + "]"

exec (@strsql)

go