• SQL Server 2005 分区表创建实例


    --创建一个分区函数(默认为左边界)
    CREATE PARTITION FUNCTION PARTFUNC1(INT)
    AS RANGE
    FOR VALUES(1000,2000,3000,4000,5000);

    --创建一个分区方案
    CREATE PARTITION SCHEME PARTSCHEME1
    AS PARTITION PARTFUNC1
    ALL TO ([PRIMARY]);

    --创建一个分区表
    CREATE TABLE PARTTABLE1
    (
    col1 int,
    col2 int,
    col3 int
    ) on partscheme1(col1);

    --插入测试记录
    insert into parttable1 values(10,10,10)
    insert into parttable1 values(999,10,10)
    insert into parttable1 values(1000,10,10)
    insert into parttable1 values(2000,10,10)
    insert into parttable1 values(3000,10,10)
    insert into parttable1 values(5000,10,10)
    insert into parttable1 values(6000,10,10)
    insert into parttable1 values(7000,10,10)
    insert into parttable1 values(9000,10,10)
    insert into parttable1 values(993,10,10)
    insert into parttable1 values(6000,10,10)
    insert into parttable1 values(5000,10,10)
    insert into parttable1 values(7000,10,10)
    insert into parttable1 values(6600,10,10)
    insert into parttable1 values(8200,10,10)
    insert into parttable1 values(8900,10,10)
    insert into parttable1 values(17000,10,10)
    insert into parttable1 values(61600,10,10)
    insert into parttable1 values(81200,10,10)
    insert into parttable1 values(18900,10,10)
    insert into parttable1 values(10,10,10)
    insert into parttable1 values(999,10,10)
    insert into parttable1 values(1000,10,10)
    insert into parttable1 values(2000,10,10)
    insert into parttable1 values(3000,10,10)
    insert into parttable1 values(5000,10,10)
    insert into parttable1 values(6000,10,10)
    insert into parttable1 values(7000,10,10)
    insert into parttable1 values(9000,10,10)
    insert into parttable1 values(1993,10,10)
    insert into parttable1 values(16000,10,10)
    insert into parttable1 values(15000,10,10)
    insert into parttable1 values(17000,10,10)
    insert into parttable1 values(16600,10,10)
    insert into parttable1 values(18200,10,10)
    insert into parttable1 values(15000,10,10)
    insert into parttable1 values(17000,10,10)
    insert into parttable1 values(16000,10,10)
    insert into parttable1 values(12000,10,10)
    insert into parttable1 values(11000,10,10)


    --查看数据在分区的分布情况
    select o.name,p.partition_number,p.rows
    from sys.objects o join sys.partitions p on o.object_id=p.object_id
    where o.type='u' and o.name='parttable1' and p.index_id=0


    --查看更多细节
    select $partition.partfunc1(col1) as partition,
     col1 as [data],col2,col3
    from parttable1
    order by partition

    --查看分区的配置情况
    select f.name,f.type_desc,f.fanout,p.boundary_id,p.value
    from sys.partition_functions f join sys.partition_range_values p on f.function_id=p.function_id


    --合并分区,将1000<X<=2000和2000<X<=3000的合并
    alter partition function partfunc1()
    merge range(2000)

    --拆分分区,将1000<X<=3000的分区,以2000为界进行拆分
    alter partition function partfunc1()
    split range(2000)

    --拆分分区之前如果分区方案指定的文件组数据小于分区函数中的分区数据,则要修改分区方案
    alter partition scheme partscheme1
    next used [filegroup_name] 


    --存档分区,创建一个存档表
    create table parttable2
    (
     col1 int,
     col2 int,
     col3 int
    ) on partscheme1(col1)

    --将分区1的数据存档
    alter table parttable1
    switch partition 1
    to parttable2 partition 1

    --检查数据是否归档
    select $partition.partfunc1(col1) as partition,* from parttable1
    order by partition
    --where $partition.partfunc1(col1)=1

    select * from parttable2


    --将存档的数据重新加载
    alter table parttable2
    switch partition 1
    to parttable1 partition 1

    --如果将非分区表的数据转移到分区表呢?

  • 相关阅读:
    Chrome V75V76新版无法存为mhtml格式解决办法
    RHEL7 的注册
    JQuery淡入淡出 banner切换特效
    怎样把小坚果做成大生意
    黄页前台联动菜单修改时不能显示,要重新选择|没样式
    V9任何页面GET调用内容分页的说明
    phpcms v9 自定义伪静态的分页函数
    phpcms v9 自定义分页 带下拉跳转
    discuz X2.5自己写代码,获取当前登录的用户信息
    discuz!X2.5技术文档
  • 原文地址:https://www.cnblogs.com/champaign/p/3858518.html
Copyright © 2020-2023  润新知