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SQL code:
id INT AUTO_INCREMENT

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PHP code:

insert into ºóÓÃ
SELECT SCOPE_IDENTITY()
»ò
SELECT @@IDENTITY
»òÕßÈÎÒâʱºòÓÃ
SELECT IDENT_CURRENT('ij¸ö±íÃû³Æ')


SQL code:
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select max(id) from mytable



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SQL code:

create table t(
id integer identity(1,1), //´Ó1¿ªÊ¼£¬Ã¿´Î²åÈëÔö¼Ó1,²åÈëµÄʱºòÒªÖ¸¶¨ÁÐÃû£¬ÕâÁв»Òª²åÈ룬×Ô¶¯µÄ
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mysql_insert_id
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mssql´æ´¢¹ý³ÌÖÐÈÝ´í´¦Àí - MS-SQL Server / »ù´¡Àà

exec YYys 'aa' aaÊÇmssql·ÇÕýÈ·µÄÓï¾ä,
ÀïÃæÊÇͨ¹ý exec (@sql)--ÉÏÃæaaËù´«µÝµÄ²ÎÊý¾ÍÊÇ@sqlµ÷Óõģ¬Èç¹ûÈçºÎÈÃexec @sql³ö´íºó´æ´¢¹ý³ÌÄÜÊä³ö´íÎó¡£
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Mssql2005 xml ²éѯ ʹÓà exist - .NET¼¼Êõ / C#

SQL code:

@uid int
@money float
If not exists(SELECT null from bc_users_table where bet_id=@uid and bet_hk_rationing.exist('/root/items[@straight_bet>'+@money+']') = 1)
--BEGIN
......

msSql ÐÞ¸Äʱ¼ä×Ö¶Î - MS-SQL Server / »ù´¡Àà

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SQL code:
autoID outDate type resultDate
1 2010-05-10 11£º12£º03 1 null
2 2010-05-10 15£º10£º03 0 n ......

mssql null µÄÎÊÌâ - MS-SQL Server / ÒÉÄÑÎÊÌâ

select case null
when '' then '1' 
when null then '2' --ΪʲôûÓÐÔÚÕâ¸öλÖÃÅжϳöÀ´
else '3' 
end a 
select 1 a,2 b into #a
select isnull(b,0) b from #a where a=2
--bÁÐû ......

mssqlµÄ¶à±í¹ØÁªÎÊÌâ - MS-SQL Server / »ù´¡Àà

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SQL code:
select a.uid,a.fid,b.* from a,b where a.uid=b.id and a.fid=b.id

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