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  • Sybase数据库,普通表修改分区表步骤

    本文目标:指导项目侧人员再遇到此类改动需求时可以自己参照更改。
    需求:Sybase数据库,普通表t_jingyu修改为按天分区的分区表。

    1.sp_help查看t_jingyu的表结构,索引等信息
    sp_help t_jingyu
    go
    
    提示:可以直接用DBArtisan工具Extract原建表语句参考

    2.sp_rename重命名普通表t_jingyu及其主键pk_t_jingyu和索引idx_t_jingyu_1。
    sp_rename t_jingyu,t_jingyu_bak
    go
    sp_rename "t_jingyu_bak.pk_t_jingyu",pk_t_jingyu_bak
    go
    sp_rename "t_jingyu_bak.idx_t_jingyu_1",idx_t_jingyu_1_bak
    go
    
     
    3.确定上面备份无问题后,创建分区表t_jingyu,分区索引。
    3.1创建分区表t_jingyu
    CREATE TABLE dbo.t_jingyu
    (
        oid         varchar(64)   NOT NULL,
        related_rnc varchar(64)   NULL,
        start_time  datetime      NOT NULL
    )
    LOCK DATAROWS
    PARTITION BY RANGE (start_time)
    (p20140601 VALUES <= ('2014-06-01 23:59:59.999') ON seg_d_wrnop,
    p20140602 VALUES <= ('2014-06-02 23:59:59.999') ON seg_d_wrnop,
    p20140603 VALUES <= ('2014-06-03 23:59:59.999') ON seg_d_wrnop,
    p20140604 VALUES <= ('2014-06-04 23:59:59.999') ON seg_d_wrnop,
    p20140605 VALUES <= ('2014-06-05 23:59:59.999') ON seg_d_wrnop,
    p20140606 VALUES <= ('2014-06-06 23:59:59.999') ON seg_d_wrnop,
    p20140607 VALUES <= ('2014-06-07 23:59:59.999') ON seg_d_wrnop,
    p20140608 VALUES <= ('2014-06-08 23:59:59.999') ON seg_d_wrnop,
    p20140609 VALUES <= ('2014-06-09 23:59:59.999') ON seg_d_wrnop,
    p20140610 VALUES <= ('2014-06-10 23:59:59.999') ON seg_d_wrnop,
    p20140611 VALUES <= ('2014-06-11 23:59:59.999') ON seg_d_wrnop,
    p20140612 VALUES <= ('2014-06-12 23:59:59.999') ON seg_d_wrnop,
    p20140613 VALUES <= ('2014-06-13 23:59:59.999') ON seg_d_wrnop,
    p20140614 VALUES <= ('2014-06-14 23:59:59.999') ON seg_d_wrnop,
    p20140615 VALUES <= ('2014-06-15 23:59:59.999') ON seg_d_wrnop,
    p20140616 VALUES <= ('2014-06-16 23:59:59.999') ON seg_d_wrnop,
    p20140617 VALUES <= ('2014-06-17 23:59:59.999') ON seg_d_wrnop,
    p20140618 VALUES <= ('2014-06-18 23:59:59.999') ON seg_d_wrnop,
    p20140619 VALUES <= ('2014-06-19 23:59:59.999') ON seg_d_wrnop,
    p20140620 VALUES <= ('2014-06-20 23:59:59.999') ON seg_d_wrnop,
    p20140621 VALUES <= ('2014-06-21 23:59:59.999') ON seg_d_wrnop,
    p20140622 VALUES <= ('2014-06-22 23:59:59.999') ON seg_d_wrnop,
    p20140623 VALUES <= ('2014-06-23 23:59:59.999') ON seg_d_wrnop,
    p20140624 VALUES <= ('2014-06-24 23:59:59.999') ON seg_d_wrnop,
    p20140625 VALUES <= ('2014-06-25 23:59:59.999') ON seg_d_wrnop,
    p20140626 VALUES <= ('2014-06-26 23:59:59.999') ON seg_d_wrnop,
    p20140627 VALUES <= ('2014-06-27 23:59:59.999') ON seg_d_wrnop,
    p20140628 VALUES <= ('2014-06-28 23:59:59.999') ON seg_d_wrnop,
    p20140629 VALUES <= ('2014-06-29 23:59:59.999') ON seg_d_wrnop,
    p20140630 VALUES <= ('2014-06-30 23:59:59.999') ON seg_d_wrnop)
    go
    
    3.2创建惟一性非聚簇分区索引(代替了原表主键的作用)
    CREATE UNIQUE NONCLUSTERED INDEX pk_t_jingyu
        ON dbo.t_jingyu(oid,start_time)
        ON seg_i_wrnop
    LOCAL INDEX
    go 
    
    3.3创建其他非聚簇分区索引
    CREATE NONCLUSTERED INDEX idx_t_jingyu_1
        ON dbo.t_jingyu(start_time,related_rnc)
        ON seg_i_wrnop
    LOCAL INDEX 
    go
    
     
    4.选择性插入需要的数据到新表
    insert into t_jingyu select * from t_jingyu_bak where 条件
    go
    
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  • 原文地址:https://www.cnblogs.com/jyzhao/p/3768741.html
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