实现千万级数据的分页显示

发布: 2007-7-02 11:08 | 作者: admin | 来源: | 查看: 18次 | 进入软件测试论坛讨论

这是经我该写后的存储过程
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ALTER       PROCEDURE usp_GetRecordFromPage
    @tblName     varchar(1000),       -- 表名
    @SelectFieldName varchar(4000),              -- 要显示的字段名(不要加select)
    @strWhere     varchar(4000),              -- 查询条件(注意: 不要加 where)
    @OrderFieldName      varchar(255),               -- 排序索引字段名
    @PageSize     int ,                 -- 页大小
    @PageIndex    int = 1,                  -- 页码
    @iRowCount    int output,                 -- 返回记录总数
    @OrderType    bit = 0                  -- 设置排序类型, 非 0 值则降序

AS

declare @strSQL   varchar(4000)       -- 主语句
declare @strTmp   varchar(4000)        -- 临时变量
declare @strOrder varchar(400)        -- 排序类型
declare @strRowCount    nvarchar(4000)      -- 用于查询记录总数的语句

set @OrderFieldName=ltrim(rtrim(@OrderFieldName))

if @OrderType != 0
begin
    set @strTmp = @#<(select min@#
    set @strOrder = @# order by @# + @OrderFieldName +@# desc@#
end
else
begin
    set @strTmp = @#>(select max@#
    set @strOrder = @# order by @# + @OrderFieldName +@# asc@#
end

set @strSQL = @#select top @# + str(@PageSize) + @SelectFieldName+@# from @#
    + @tblName + @# where @# + @OrderFieldName + @strTmp + @#(@#
    + right(@OrderFieldName,len(@OrderFieldName)-charindex(@#.@#,@OrderFieldName)) + @#) from (select top @# + str((@PageIndex-1)*@PageSize)
    + @OrderFieldName + @# from @# + @tblName + @strOrder + @#) as tblTmp)@#
    + @strOrder

if @strWhere != @#@#
    set @strSQL = @#select top @# + str(@PageSize) + @SelectFieldName+@# from @#
        + @tblName + @# where @# + @OrderFieldName + @strTmp + @#(@#
        + right(@OrderFieldName,len(@OrderFieldName)-charindex(@#.@#,@OrderFieldName)) + @#) from (select top @# + str((@PageIndex-1)*@PageSize)
        + @OrderFieldName + @# 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) + @SelectFieldName+@# from @#
        + @tblName + @strTmp + @# @# + @strOrder
end

exec(@strSQL)

if @strWhere!=@#@#
begin
set @strRowCount = @#select @iRowCount=count(*) from @# + @tblName+@# where @#+@strWhere
end
else
begin
set @strRowCount = @#select @iRowCount=count(*) from @# + @tblName
end

exec sp_executesql @strRowCount,N@#@iRowCount int out@#,@iRowCount out