這問(wèn)題今天糾結(jié)了我一天了。
下面的代碼是網(wǎng)上轉(zhuǎn)載來(lái)的
create
partition
function
PF_Orders_OrderDateRange(
datetime
)
as
range
right
for
values
(
'
1997-01-01
'
,
'
1998-01-01
'
,
'
1999-01-01
'
)
go
--
創(chuàng)建分區(qū)方案
create
partition scheme PS_Orders
as
partition PF_Orders_OrderDateRange
to
(
[
primary
]
,
[
primary
]
,
[
primary
]
,
[
primary
]
)
go
--
創(chuàng)建分區(qū)表
sp_rename
'
dbo.Orders
'
,
'
Orders_From_SQL2000_Northwind
'
create
table
dbo.Orders
(
OrderID
int
not
null
,CustomerID
varchar
(
10
)
not
null
,EmployeeID
int
not
null
,OrderDate
datetime
not
null
)
on
PS_Orders(OrderDate)
go
--
創(chuàng)建聚集分區(qū)索引
create
clustered
index
IXC_Orders_OrderDate
on
dbo.Orders(OrderDate)
go
--
為分區(qū)表設(shè)置主鍵
alter
table
dbo.Orders
add
constraint
PK_Orders
primary
key
(OrderID, CustomerID, OrderDate)
go
--
導(dǎo)入數(shù)據(jù)到分區(qū)表
insert
into
dbo.Orders
select
OrderID, CustomerID, EmployeeID, OrderDate
from
dbo.Orders_From_SQL2000_Northwind
--
（注：數(shù)據(jù)來(lái)源于 SQL Server 2000 示例數(shù)據(jù)庫(kù)）
go
--
查看分區(qū)表每個(gè)分區(qū)的數(shù)據(jù)分布情況
select
partition
=
$partition.PF_Orders_OrderDateRange(OrderDate)
,rows
=
count
(
*
)
,minval
=
min
(OrderDate)
,maxval
=
max
(OrderDate)
from
dbo.Orders
group
by
$partition.PF_Orders_OrderDateRange(OrderDate)
order
by
partition
GO
create
table
dbo.Orders_1998
(
OrderID
int
not
null
,CustomerID
varchar
(
10
)
not
null
,EmployeeID
int
not
null
,OrderDate
datetime
not
null
)
on
[
primary
]
go
create
clustered
index
IXC_Orders1998_OrderDate
on
dbo.Orders_1998(OrderDate)
go
alter
table
dbo.Orders_1998
add
constraint
PK_Orders_1998
primary
key
nonclustered
(OrderID, CustomerID, OrderDate)
go
alter
table
dbo.Orders switch partition
3
to
dbo.Orders_1998
go
alter
table
dbo.Orders_1998
add
constraint
CK_Orders1998_OrderDate
check
(OrderDate
>=
'
1998-01-01
'
and
OrderDate
<
'
1999-01-01
'
)
go
alter
table
dbo.Orders_1998 switch
to
dbo.Orders partition
3
這段代碼是沒(méi)問(wèn)題的，普通表能成功的switch 分區(qū)表。但是有一點(diǎn)要注意：分區(qū)字段為 not null。如果你改為null 不好意思 switch 不了。
只能出不能進(jìn)。
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