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source:   http://blog.csdn.net/LoveCherry/archive/2007/08/13/4606629.aspx
http://kb.cnblogs.com/zt/linq/   LINQרÌâ - ²©¿ÍÔ°
http://www.cnblogs.com/lyj/archive/2008/03/25/1119671.html


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use Tempdb
go
if object_ID('fn_ACITEncryption') is not null
drop function fn_ACITEncryption
go
create function fn_ACITEncryption
(
@Str nvarchar(4000),--¼ÓÃܵÄ×Ö·û´®
@Flag bit=1,--1¡¢¼ÓÃÜ 0¡¢½âÃÜ
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SQL ÿ¸ö·ÖÀà¸÷È¡2ÌõÊý¾Ý

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insert tb
select 1,1,'Ò·þ1'
union all
select 2,2,'Ò·þ2'
union all
select 3,3,'Ò·þ3'
union all
select 4,3,'Ò·þ4'
union all
select 5,2,'Ò·þ5'
union all
select 6,2,'Ò·þ6'
union all
select 7,2,'Ò·þ7'
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select 8 ......

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