sql 导出，解决sheet表大小限制

CREATE proc  sqlToMultiExcelFile
@sqlstr nvarchar(4000),    --查询语句,如果查询语句中使用了order by ,请加上top 100 percent  
@primaryKey varchar(100),--分页主键字段
@path nvarchar(1000),   --文件存放目录  
@fname nvarchar(250),   --文件名  
@sheetname varchar(250)='sheet1'  --要创建的工作表名,默认为文件名  
as   
set nocount on
declare @err int,@src nvarchar(255),@out int,@desc nvarchar(255),@sheetCount int,@i int,@topCount int,@where varchar(1000),@from varchar(1000),@myWhere varchar(1000),@filename varchar(250)
declare @obj int,@constr nvarchar(1000),@sql varchar(8000),@fdlist varchar(8000),@totalCount int,@pageCount int  
create table #tbMemory
(
 recId int identity(1,1) primary key,
 primaryKey varchar(50)
)
create table #pageTb(totalCount int)
 
 
set @from=substring(@sqlstr,charindex('from',@sqlstr)+5,len(@sqlstr)-charindex('from',@sqlstr)+1)
 
 
if charindex('where',@sqlstr)>0
 set @where=substring(@sqlstr,charindex('where',@sqlstr)+6,len(@sqlstr)-charindex('where',@sqlstr)+1)
else
 set @where=''
 
 
set @pageCount=65000
set @sql='select count(*) from ('+@sqlStr+') a'
 
insert into #pageTb execute (@sql)
select @totalCount=totalCount from #pageTb
 
insert into #tbMemory execute('select top '+@totalCount+' '+@primaryKey+' from '+@from)
 
--得出要导出的sheet数量
if @totalCount>@pageCount 
 set @sheetCount=@totalCount/@pageCount+1
else
 set @sheetCount=1
 
--参数检测  
if isnull(@fname,'')='' set @fname='temp.xls'  
if isnull(@sheetname,'')='' set @sheetname=replace(@fname,'.','#')  
 
--检查文件是否已经存在  
if right(@path,1)<>'\' set @path=@path+'\'  
create table #tb(a bit,b bit,c bit)  
 
 
 
--创建表的SQL  
declare @tbname sysname  
set @tbname='##tmp_'+convert(varchar(38),newid())  
set @sql='select top 1 * into ['+@tbname+'] from('+@sqlstr+') a'  
--print @sql  
exec(@sql)  
 
 
select @sql='',@fdlist=''  
select @fdlist=@fdlist+',['+a.name +']'
 ,@sql=@sql+',['+a.name+'] '  
  +case when b.name in('char','nchar','varchar','nvarchar') then  
     'text('+cast(case when a.length>255 then 255 else a.length end as varchar)+')'  
   when b.name in('tynyint','int','bigint','tinyint') then 'int'  
   when b.name in('smalldatetime','datetime') then 'datetime'  
   when b.name in('money','smallmoney') then 'money'  
   else b.name end  
FROM tempdb..syscolumns a left join tempdb..systypes b on a.xtype=b.xusertype  
where b.name not in('image','text','uniqueidentifier','sql_variant','ntext','varbinary','binary','timestamp')  
 and a.id=(select id from tempdb..sysobjects where name=@tbname)  
 
--创建sheet语句
set @sql='create table ['+@sheetname+']('+substring(@sql,2,8000)+')' 
 
set @i=1
while @i<=@sheetCount
begin
 set @filename=@path+cast(@i as varchar)+@fname  
 truncate table #tb
 insert into #tb exec master..xp_fileexist @filename
 
 if exists(select 1 from #tb where a=1)  
   set @constr='DRIVER={Microsoft Excel Driver (*.xls)};DSN='''';READONLY=FALSE;CREATE_DB="'+@filename+'";DBQ='+@filename
 else  
   set @constr='Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties="Excel 8.0;HDR=YES;DATABASE='+@filename+'"'   
 
 
 --创建Excel文件
 exec @err=sp_oacreate 'adodb.connection',@obj out  
 if @err<>0 goto lberr  
 
 exec @err=sp_oamethod @obj,'open',null,@constr  
 if @err<>0 goto lberr    
 
 exec @err=sp_oamethod @obj,'execute',@out out,@sql  
 if @err<>0 goto lberr    
 
 --关闭Excel
 exec   @err=sp_oamethod   @obj,'close',null     
 if   @err<>0   goto   lberr  
 
 exec @err=sp_oadestroy @obj 
 
 set @i=@i+1  
end
 
 
 
set @fdlist=substring(@fdlist,2,8000)  
 
set @i=1
 
--导入数据  
while @i<=@sheetCount
begin
 set @topCount=(@i-1)*@pageCount 
 
--可取记录小于页面所需数时取剩余记录
    if @totalCount-@topCount<@pageCount
        set @pageCount=@totalCount-@topCount
 
 if @where<>''
 begin
  set @myWhere='z1.recId >'+cast(@topCount as varchar)+' and '+@where
  set @sql='select top '+convert(varchar,@pageCount)+' '+@fdlist+' from '+substring(@from,1,charindex('where',@from)-2)
 
 end
 else
 begin
  set @myWhere='z1.recId >'+cast(@topCount as varchar)
  set @sql='select top '+convert(varchar,@pageCount)+' '+@fdlist+' from '+@from
 end
 
 set @sql=@sql+' left join #tbMemory z1 on '+@primaryKey+'=primaryKey where '+@myWhere
 
 set @constr='openrowset(''MICROSOFT.JET.OLEDB.4.0'',''Excel 8.0;HDR=YES;DATABASE='+@path+cast(@i as varchar)+@fname+''',['+@sheetname+'$])'
 
-- set ansi_nulls on
-- set ansi_warnings on
 
 --print @sql
 execute('insert into '+@constr+'('+@fdlist+') '+@sql)
 
 set @i=@i+1
end
 
set @sql='drop table ['+@tbname+']'  
exec(@sql)  
 
 
--set ansi_nulls off 
--set ansi_warnings off
 
return  
 
lberr:  
 exec sp_oageterrorinfo 0,@src out,@desc out  
lbexit:  
 select cast(@err as varbinary(4)) as 错误号  
  ,@src as 错误源,@desc as 错误描述  
 select @sql,@constr,@fdlist
GO

example：exec sqlToMultiExcelFile 'select * from emp.OmEmp','emp_num','d:\wdr','file.xls'