实现千万级数据的分页显示

发表于:2007-07-02来源:作者:点击数: 标签:
这是经我该写后的存储过程 --------------------------------------------------------- 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

这是经我该写后的存储过程
---------------------------------------------------------
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

原文转自:http://www.ltesting.net