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CREATE PROCEDURE [dbo].[DataPager]
(
@tblName nvarchar(200), ----要显示的表或多个表的连接
@fldName nvarchar(1000)='*', ----要显示的字段列表
@pageSize int = 10, ----每页显示的记录个数
@page int = 1, ----要显示那一页的记录
@pageCount int = 1 output, ----查询结果分页后的总页数
@Counts int =1 output, ----查询到的记录数
@fldSort nvarchar(100)='', ----如果多列排序,一定要带asc或者desc,则@Sort排序方法无效,反之,单列根据@Sort来处理
@Sort int = 1, ----排序方法,0为升序,1为降序
@strCondition nvarchar(1000)='', ----查询条件,不需where
@keyID nvarchar(50) = 'ID'
)
/*Create by wszhoho*/
AS
declare @sqlTmp nvarchar(2000)
declare @sqlGetCount nvarchar(2000)
declare @frontOrder nvarchar(200)
declare @behindOrder nvarchar(200)
declare @start nvarchar(20)
declare @end nvarchar(20)
begin
if @fldSort is null or @fldSort=''
set @fldSort=@keyID
if charindex(',',@fldSort,0)>0--多列排序,则@Sort排序方法无效
begin
set @frontOrder = @fldSort--获取分页前半部分数据的排序规则
set @behindOrder = replace(@frontOrder,'desc','desctmp')
set @behindOrder = replace(@behindOrder,'asc','desc')
set @behindOrder = replace(@behindOrder,'desctmp','asc')--获取分页后半部分数据的排序规则
end
else--单列
begin
set @fldSort=replace(replace(@fldSort,'desc',''),'asc','')--替换掉结尾的规则,用@Sort值来处理排序
if @Sort=1--倒序
begin
set @frontOrder = @fldSort + ' desc'
set @behindOrder = @fldSort + ' asc'
end
else
begin
set @frontOrder = @fldSort + ' asc'
set @behindOrder = @fldSort + ' desc'
end
end
--获取记录数
if @strCondition is null or @strCondition = ''--无条件
begin
set @sqlGetCount = 'select @Counts=count(*) from ' + @tblName
end
else
begin
set @sqlGetCount = 'select @Counts=count(*) from ' + @tblName + ' where ' + @strCondition
end
----取得查询结果总数量-----
exec sp_executesql @sqlGetCount,N'@Counts int out ',@Counts out
declare @tmpCounts int
if @Counts = 0
set @tmpCounts = 1
else
set @tmpCounts = @Counts
--取得分页总数
set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize
/**当前页大于总页数 取最后一页**/
if @page>@pageCount
set @page=@pageCount
/*-----数据分页2分处理-------*/
declare @pageIndex int --总数/页大小
declare @lastcount int --总数%页大小 最后一页的数据量
set @pageIndex = @tmpCounts/@pageSize
set @lastcount = @tmpCounts%@pageSize
if @lastcount > 0
set @pageIndex = @pageIndex + 1
else
set @lastcount = @pagesize
--取得数据的逻辑分析
if @strCondition is null or @strCondition='' --没有设置显示条件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
begin
--计算开始结束的行号
set @start = @pageSize*(@page-1)+1
set @end = @start+@pageSize-1
set @sqlTmp='SELECT ' + @fldName + ' FROM (select '+@fldName+',ROW_NUMBER() OVER ( Order by '+@frontOrder+' ) AS RowNumber From '+@tblName+') T WHERE T.RowNumber BETWEEN '+@start+' AND '+@end+' order by '+@frontOrder
end
else
begin
set @page = @pageIndex-@page+1 --后半部分数据处理
if @lastcount=@pageSize --如果正好是整数页
begin
set @start = @pageSize*(@page-1)+1
set @end = @start+@pageSize-1
end
else
begin
set @start = @lastcount+@pageSize*(@page-2)+1
set @end = @start+@pageSize-1
end
set @sqlTmp='select top '+@end+' '+@fldName+' FROM (select '+@fldName+',ROW_NUMBER() OVER ( Order by '+@behindOrder+' ) AS RowNumber From '+@tblName+') T WHERE T.RowNumber BETWEEN '+@start+' AND '+@end+' order by '+@frontOrder
end
end
else --有查询条件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
begin
--计算开始结束的行号
set @start = @pageSize*(@page-1)+1
set @end = @start+@pageSize-1
set @sqlTmp='SELECT ' + @fldName + ' FROM (select '+@fldName+',ROW_NUMBER() OVER ( Order by '+@frontOrder+' ) AS RowNumber From '+@tblName+' where '+@strCondition+') T WHERE T.RowNumber BETWEEN '+@start+' AND '+@end+' order by '+@frontOrder
end
else
begin
set @page = @pageIndex-@page+1 --后半部分数据处理
if @lastcount=@pageSize --如果正好是整数页
begin
set @start = @pageSize*(@page-1)+1
set @end = @start+@pageSize-1
end
else
begin
set @start = @lastcount+@pageSize*(@page-2)+1
set @end = @start+@pageSize-1
end
set @sqlTmp='select top '+@end+' '+@fldName+' FROM (select '+@fldName+',ROW_NUMBER() OVER ( Order by '+@behindOrder+' ) AS RowNumber From '+@tblName+' where '+@strCondition+') T WHERE T.RowNumber BETWEEN '+@start+' AND '+@end+' order by '+@frontOrder
end
end
end
exec sp_executesql @sqlTmp
--select @sqlTmp