objective of this article: to guide the project side personnel to meet such change requirements, you can refer to the changes themselves.
Requirement: Sybase database, normal table T_jingyu modified to partition table by day partition.
1.sp_help View T_jingyu table structure, index and other information?
Tip: You can use the Dbartisan tool to extract the original table statement reference directly
2.sp_rename renames the normal table T_jingyu and its primary key Pk_t_jingyu and index idx_t_jingyu_1.
?
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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_bakgo |
3. After you have determined that there is no problem with the backup above, create the partition table T_jingyu, partition index.
3.1 Creating a partitioned table T_jingyu?
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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 Creating a unique nonclustered partition index (instead of the primary key of the primary table)?
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CREATE UNIQUE NONCLUSTERED INDEX pk_t_jingyu ON dbo.t_jingyu(oid,start_time) ON seg_i_wrnop LOCAL INDEXgo |
3.3 Creating additional nonclustered partition indexes?
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CREATE NONCLUSTERED INDEX idx_t_jingyu_1 ON dbo.t_jingyu(start_time,related_rnc) ON seg_i_wrnop LOCAL INDEXgo |
4. Selectively insert the required data into a new table?
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insert into t_jingyu select * from t_jingyu_bak where 条件go |