分页存储过程
自己写个一个分页存储过程，相对来说效率还可以。
Create PROCEDURE [dbo].[SplitPager]
@tblname VARCHAR(255), -- 表名
@strGetFields varchar(1000) = '*', -- 需要返回的列
@PrimaryKey varchar(255)='ID',--主键
@sortField varchar(255)='', -- 排序的字段名
@PageSize int = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount bit = 0, -- 返回, 非0 值则返回记录总数
@OrderType bit = 0, -- 设置排序类型, 非0 值则降序
@strWhere varchar(1500) = '' -- 查询条件(注意: 不要加where)
AS
declare @strSQL varchar(5000) -- 主语句
declare @strTmp varchar(110) -- 临时变量
declare @strOrder varchar(400) -- 排序类型
if @doCount != 0
begin
if @strWhere !=''
set @strSQL = 'select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere
else
set @strSQL = 'select count(*) as Total from [' + @tblName + ']'
end --以上代码的意思是如果@doCount传递过来的不是，就执行总数统计。以下的所有代码都是@doCount为的情况：
else
begin
if @OrderType != 0--降序
begin
set @strTmp = ' not exists( select'
set @strOrder = ' order by [' + @sortField +'] desc'--如果@OrderType不是0，就执行降序，这句很重要！
end
else
begin
set @strTmp = ' not exists( select'
set @strOrder = ' order by [' + @sortField +'] asc'
end
if @sortField<>@PrimaryKey --如果排序字段不是ID 则不添加以免重复出错
begin
set @strOrder=@strOrder+',['+@PrimaryKey+'] desc'
end
if @PageIndex = 1
begin
if @strWhere != ''
set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder
else
set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] ' + @strOrder--如果是第一页就执行以上代码，这样会加快执行速度
end
else
begin--以下代码赋予了@strSQL以真正执行的SQL代码
if @strWhere != ''
begin
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName + '] as a where ' + @strTmp + '['+@PrimaryKey+'] from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+@PrimaryKey+'] from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder + ') as b where a.'+@PrimaryKey+'=b.'+@PrimaryKey+') and 1=1 ' + @strWhere + ' ' + @strOrder
end
else
begin
set @strSQL = 'select top ' + str(@PageSize) + ' ' + @strGetFields + ' from [' + @tblName + '] as a where '+ @strTmp + '['+@PrimaryKey+'] from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+@PrimaryKey+'] from [' + @tblName + ']' + @strOrder + ' ) as b where a.'+@PrimaryKey+'=b.'+@PrimaryKey+')' + @strOrder
end
end
if @strWhere !='' --得到记录的总行数
set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere
else
set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + ']'
end
print (@strSQL)
exec (@strSQL)
@tblname VARCHAR(255), -- 表名
@strGetFields varchar(1000) = '*', -- 需要返回的列
@PrimaryKey varchar(255)='ID',--主键
@sortField varchar(255)='', -- 排序的字段名
@PageSize int = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount bit = 0, -- 返回, 非0 值则返回记录总数
@OrderType bit = 0, -- 设置排序类型, 非0 值则降序
@strWhere varchar(1500) = '' -- 查询条件(注意: 不要加where)
AS
declare @strSQL varchar(5000) -- 主语句
declare @strTmp varchar(110) -- 临时变量
declare @strOrder varchar(400) -- 排序类型
if @doCount != 0
begin
if @strWhere !=''
set @strSQL = 'select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere
else
set @strSQL = 'select count(*) as Total from [' + @tblName + ']'
end --以上代码的意思是如果@doCount传递过来的不是，就执行总数统计。以下的所有代码都是@doCount为的情况：
else
begin
if @OrderType != 0--降序
begin
set @strTmp = ' not exists( select'
set @strOrder = ' order by [' + @sortField +'] desc'--如果@OrderType不是0，就执行降序，这句很重要！
end
else
begin
set @strTmp = ' not exists( select'
set @strOrder = ' order by [' + @sortField +'] asc'
end
if @sortField<>@PrimaryKey --如果排序字段不是ID 则不添加以免重复出错
begin
set @strOrder=@strOrder+',['+@PrimaryKey+'] desc'
end
if @PageIndex = 1
begin
if @strWhere != ''
set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder
else
set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] ' + @strOrder--如果是第一页就执行以上代码，这样会加快执行速度
end
else
begin--以下代码赋予了@strSQL以真正执行的SQL代码
if @strWhere != ''
begin
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName + '] as a where ' + @strTmp + '['+@PrimaryKey+'] from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+@PrimaryKey+'] from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder + ') as b where a.'+@PrimaryKey+'=b.'+@PrimaryKey+') and 1=1 ' + @strWhere + ' ' + @strOrder
end
else
begin
set @strSQL = 'select top ' + str(@PageSize) + ' ' + @strGetFields + ' from [' + @tblName + '] as a where '+ @strTmp + '['+@PrimaryKey+'] from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+@PrimaryKey+'] from [' + @tblName + ']' + @strOrder + ' ) as b where a.'+@PrimaryKey+'=b.'+@PrimaryKey+')' + @strOrder
end
end
if @strWhere !='' --得到记录的总行数
set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere
else
set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + ']'
end
print (@strSQL)
exec (@strSQL)
