请大神帮我注释一下下面的代码，谢谢
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go


ALTER PROCEDURE [dbo].[p_getData]
@name varchar(20),
@field varchar(1000),
@startdate varchar(20),
@enddate varchar(20),
@filter varchar(1000)
AS
declare @sql varchar(max),
@starttime datetime,
@endtime datetime,
@startyear int,
@endyear int,
@curyear varchar(20)
BEGIN
set @startyear=1950
set @endyear=2200
if(@field is null or @field='')
set @field='*'
if(@startdate='')
set @startdate=@enddate
if(@enddate='')
set @enddate=@startdate
if(len(@startdate)=4)
set @startdate=@startdate+'0101'
if(len(@enddate)=4)
set @enddate=@enddate+'1231'
if(len(@startdate)=6)
set @startdate=@startdate+'01'
if(len(@enddate)=6 and isnumeric(@enddate)=1)
set @endtime=dateadd(dd,-1,dateadd(mm,1,cast(@enddate+'01' as datetime)))
if(isdate(@startdate)>0)
begin
set @starttime = cast(@startdate as datetime)
set @startyear=year(@starttime)
end
if(isdate(@enddate)>0)
begin
set @endtime = cast(@enddate as datetime)
set @endyear=year(@endtime)
end
set @sql=''
declare cur CURSOR for
select right(name,4) from sysobjects where (xtype='U' or xtype='V') and name like @name+'%'
open cur
fetch next from cur into @curyear
while @@Fetch_Status=0
begin
if(isnumeric(@curyear)>0 and cast(@curyear as int)>=@startyear and cast(@curyear as int)<=@endyear)
set @sql=@sql+'select * from '+@name+@curyear+' union '
fetch next from cur into @curyear
end
close cur;
deallocate cur;
if(@sql<>'')
begin
set @sql='select '+@field+' from ('+left(@sql,len(@sql)-6)+') a where '
if exists(select * from sys.syscolumns where id=object_id(@name) and name='ny')
set @sql=@sql+'ny>='''+left(@startdate,6)+''' and ny<'''+left(@enddate,6)+''''
else
set @sql=@sql+'rq>=cast('''+@startdate+''' as datetime) and rq<=cast('''+@enddate+''' as datetime)'
if(@filter is not null and @filter<>'')
set @sql=@sql+' and '+@filter
exec(@sql)
end
END



这是我的存储过程，求大神帮我注释，谢谢，每句都是做什么的？
[解决办法]
都是一些简单的SQL语法,@开头的是一些变量,主要技术是用到了cursor游标
不懂游标的不如先百度一下先有个概念,那一句不太懂的可以指出来,全部注释恐怕没人帮的上忙
[解决办法]
看一下SQL的帮助吧
前面的是定义变量，然后是用If来判断数据，定义游标，执行游标，然后关闭游标，设置SQL语句，执行。

[解决办法]
注释直接用（**）或{}或//就可以了^_^