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1¡¢ sql²éѯ×îºóÒ»ÌõÊý¾Ýselect * from table order by id DESC limit 1
2¡¢select top1 * from tablename where order by id desc
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2. Çл»ÆÕͨ±íÊý¾Ýµ½·ÖÇø±íµÄÒ»¸ö·ÖÇøÖУºTable to Partition£»
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a_id a_name   ......
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create table tb(
col1 varchar(1),
col2 varchar(2)
)
insert tb(col1,col2)values('0','0')
go 10000000
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if object_id('[order]') is not null drop table [order]
go
create table [order]([orderid] int,[ordertype] varchar(1))
insert [ord ......
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T1
Term Domain WithAncestor
car x.com ?
bike y.com ?
car a.x.com ?
T2
Parent Domain
x.com ......