分页 存储过程

--建表
create table tb_TestTable
(
id int identity(1,1) primary key not null,
userName nvarchar(50) null,
userPwd nvarchar(50) null,
useremail nvarchar(200) null
)
 
 
 
--插入数据
declare @count int
set @count = 1
while @count<=10000000
begin
insert into tb_TestTable(userName,userPwd,useremail)
values('admin','admin888','lli0077@yahoo.com.cn')
set @count=@count+1
end
 


 
 
if exists(select * from dbo.sysobjects where name='proc_paged_2part_selectMax')
drop procedure proc_paged_2part_selectMax
go
 
create proc proc_paged_2part_selectMax 
( 
@tblName   nvarchar(200),    ----要显示的表或多个表的连接 
@fldName   nvarchar(500)='*',   ----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 
@fldSort   nvarchar(200)=null,   ----排序字段列表或条件 
/**排序方法，0为升序，1为降序
   *(如果是多字段排列Sort指代最后一个排序字段的排列顺序
   *(最后一个排序字段不加排序标记)--程序传参如：' SortA Asc,SortB Desc,SortC ') 
**/
@Sort    bit = 0,    
@strCondition nvarchar(1000) = null, ----查询条件,不需where 
@ID     nvarchar(150),    ----主表的主键 
@Dist           bit = 0,     ----是否添加查询字段的DISTINCT
@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 
) 
as 
set nocount on 
declare @sqlTmp nvarchar(1000)        ----存放动态生成的SQL语句 
declare @strTmp nvarchar(1000)        ----存放取得查询结果总数的查询语句 
declare @strID     nvarchar(1000)     ----存放取得查询开头或结尾ID的查询语句 

declare @strSortType nvarchar(10)   ----数据排序规则A 
declare @strFSortType nvarchar(10)   ----数据排序规则B
 
declare @SqlSelect nvarchar(50)         ----对含有DISTINCT的查询进行SQL构造 
declare @SqlCounts nvarchar(50)         ----对含有DISTINCT的总数查询进行SQL构造
 
declare @timediff datetime --耗时测试时间差 
select @timediff=getdate()
 
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
 
--------生成查询语句-------- 
--此处@strTmp为取得查询结果数量的语句 
if @strCondition is null or @strCondition=''     --没有设置显示条件 
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
 
----取得查询结果总数量----- 
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
 
set @pageIndex = @tmpCounts/@pageSize 
set @lastcount = @tmpCounts%@pageSize 
if @lastcount > 0 
set @pageIndex = @pageIndex + 1 
else 
set @lastcount = @pagesize
 
--//***显示分页 
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 
   if @page=1 
    set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '
       + @fldName+' from '+@tblName+' order by '
       + @fldSort +' '+ @strFSortType 
   else 
   begin 
    if @Sort=1 
    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 
    else 
    begin 
     set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '
        + @fldName+' from '+@tblName +' where '+@ID
        +' >(select max('+ @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     
end 
else 
begin 
   set @page = @pageIndex-@page+1 --后半部分数据处理 
   if @page <= 1 --最后一页数据显示                 
    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 
    if @Sort=1 
    begin 
     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 
    else 
    begin 
     set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '
        + CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '
       +@tblName +' where '+@ID+' <(select min('+ @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 
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 
    if @page=1 
     set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '
        + @fldName+' from '+@tblName +' where 1=1 ' 
        + @strCondition + ' order by '+ @fldSort +' '
        + @strFSortType 
    else if(@Sort=1) 
    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 
    else 
    begin 
     set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '
        + @fldName+' from '+@tblName +' where '+@ID
        +' >(select max('+ @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 --后半部分数据处理 
    if @page <= 1 --最后一页数据显示 
     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 if(@Sort=1) 
     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     
    else 
     set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '
        + CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '
       +@tblName +' where '+@ID+' <(select min('+ @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
 
------返回查询结果----- 
exec sp_executesql @strTmp 
select datediff(ms,@timediff,getdate()) as 耗时 
--print @strTmp 
set nocount off 
go
 
exec proc_paged_2part_selectMax 'tb_testTable','ID,userName,userPWD,userEmail',22,100000,'ID',0,null,'ID',0