--/*-----存儲過程 分頁處理 孫偉 2005-03-28創建 -------*/
--/*----- 對數據進行了2分處理使查詢前半部分數據與查詢后半部分數據性能相同 -------*/
--/*-----存儲過程 分頁處理 孫偉 2005-04-21修改 添加Distinct查詢功能-------*/
--/*-----存儲過程 分頁處理 孫偉 2005-05-18修改 多字段排序規則問題-------*/
--/*-----存儲過程 分頁處理 孫偉 2005-06-15修改 多字段排序修改-------*/
--/*-----存儲過程 分頁處理 孫偉 2005-12-13修改 修改數據分頁方式為top max模式性能有極大提高-------*/
--/*-----缺點：相對之前的not in版本主鍵只能是整型字段,如主鍵為GUID類型請使用not in 模式的版本-------*/
CREATE PROCEDURE dbo.proc_ListPageInt
(
@tblName nvarchar(200), ----要顯示的表或多個表的連接
@fldName nvarchar(500) = '*', ----要顯示的字段列表
@pageSize int = 10, ----每頁顯示的記錄個數
@page int = 1, ----要顯示那一頁的記錄
@pageCount int = 1 output, ----查詢結果分頁后的總頁數
@Counts int = 1 output, ----查詢到的記錄數
@fldSort nvarchar(200) = null, ----排序字段列表或條件
@Sort bit = 0, ----排序方法，0為升序，1為降序(如果是多字段排列Sort指代最后一個排序字段的排列順序(最后一個排序字段不加排序標記)--程序傳參如：' SortA Asc,SortB Desc,SortC ')
@strCondition nvarchar(1000) = null, ----查詢條件,不需where
@ID nvarchar(150), ----主表的主鍵
@Dist bit = 0 ----是否添加查詢字段的 DISTINCT 默認0不添加/1添加
)
AS
SET NOCOUNT ON
Declare @sqlTmp nvarchar(1000) ----存放動態生成的SQL語句
Declare @strTmp nvarchar(1000) ----存放取得查詢結果總數的查詢語句
Declare @strID nvarchar(1000) ----存放取得查詢開頭或結尾ID的查詢語句 Declare @strSortType nvarchar(10) ----數據排序規則A
Declare @strFSortType nvarchar(10) ----數據排序規則B Declare @SqlSelect nvarchar(50) ----對含有DISTINCT的查詢進行SQL構造
Declare @SqlCounts nvarchar(50) ----對含有DISTINCT的總數查詢進行SQL構造 if @Dist = 0
begin
set @SqlSelect = 'select '
set @SqlCounts = 'Count(*)'
end
else
begin
set @SqlSelect = 'select distinct '
set @SqlCounts = 'Count(DISTINCT '+@ID+')'
end if @Sort=0
begin
set @strFSortType=' ASC '
set @strSortType=' DESC '
end
else
begin
set @strFSortType=' DESC '
set @strSortType=' ASC '
end --------生成查詢語句--------
--此處@strTmp為取得查詢結果數量的語句
if @strCondition is null or @strCondition='' --沒有設置顯示條件
begin
set @sqlTmp = @fldName + ' From ' + @tblName
set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName
set @strID = ' From ' + @tblName
end
else
begin
set @sqlTmp = + @fldName + 'From ' + @tblName + ' where (1>0) ' + @strCondition
set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName + ' where (1>0) ' + @strCondition
set @strID = ' From ' + @tblName + ' where (1>0) ' + @strCondition
end ----取得查詢結果總數量-----
exec sp_executesql @strTmp,N'@Counts int out ',@Counts out
declare @tmpCounts int
if @Counts = 0
set @tmpCounts = 1
else
set @tmpCounts = @Counts --取得分頁總數
set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize /**//**當前頁大于總頁數 取最后一頁**/
if @page>@pageCount
set @page=@pageCount --/*-----數據分頁2分處理-------*/
declare @pageIndex int --總數/頁大小
declare @lastcount int --總數%頁大小 set @pageIndex = @tmpCounts/@pageSize
set @lastcount = @tmpCounts%@pageSize
if @lastcount > 0
set @pageIndex = @pageIndex + 1
else
set @lastcount = @pagesize --//***顯示分頁
if @strCondition is null or @strCondition='' --沒有設置顯示條件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分數據處理
begin
if @page=1
set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' order by '+ @fldSort +' '+ @strFSortType
else
begin
set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where '+@ID+' <(select min('+ @ID +') from ('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
+' order by '+ @fldSort +' '+ @strFSortType+') AS TBMinID)'
+' order by '+ @fldSort +' '+ @strFSortType
end
end
else
begin
set @page = @pageIndex-@page+1 --后半部分數據處理
if @page <= 1 --最后一頁數據顯示
set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
else
set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where '+@ID+' >(select max('+ @ID +') from('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
+' order by '+ @fldSort +' '+ @strSortType+') AS TBMaxID)'
+' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
end
end else --有查詢條件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分數據處理
begin
if @page=1
set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where 1=1 ' + @strCondition + ' order by '+ @fldSort +' '+ @strFSortType
else
begin
set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where '+@ID+' <(select min('+ @ID +') from ('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
+' where (1=1) ' + @strCondition +' order by '+ @fldSort +' '+ @strFSortType+') AS TBMinID)'
+' '+ @strCondition +' order by '+ @fldSort +' '+ @strFSortType
end
end
else
begin
set @page = @pageIndex-@page+1 --后半部分數據處理
if @page <= 1 --最后一頁數據顯示
set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where (1=1) '+ @strCondition +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
else
set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
+' where '+@ID+' >(select max('+ @ID +') from('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
+' where (1=1) '+ @strCondition +' order by '+ @fldSort +' '+ @strSortType+') AS TBMaxID)'
+' '+ @strCondition+' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
end
end ------返回查詢結果-----
exec sp_executesql @strTmp
--print @strTmp
SET NOCOUNT OFF
GO 怎么在數據庫中測試呢？
