This clause ensures that any bitmap indexes subsequently created on the table will be as small (compressed) as possible. Restrictions: You cannot specify either MINIMIZE or NOMINIMIZE if a bitmap index has already been defined on table. You must first drop the bitmap index. You cannot ...
ALTER TABLE REBUILD PARTITION WITH DATA COMPRESSION = ROW または PAGE は、Microsoft Fabric の SQL データベースでは許可されていません。 XML_COMPRESSION 適用対象: SQL Server 2022 (16.x) 以降のバージョン、Azure SQL データベース、および Azure SQL Managed Instance。 テーブル内のすべて...
Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by setting options on the index.
ALTER TABLE modifies a table definition by altering, adding, or dropping columns and constraints. ALTER TABLE also reassigns and rebuilds partitions, or disables and enables constraints and triggers.
Because such "shrinkage" results in both the table and associated indexes being fragmented with HWMs that need resetting (to prevent performance issues with Full Table Scans and all types of Index Scans). Yes the index needs rebuilding but only as a result of the dependent table being rebuilt...
指定的大小是减小现有容器的大小。 如果指定了all-containers-clause,那么表空间中的所有容器都将减小此大小。 如果减小大小导致表空间大小小于当前高水位标记,那么会在尝试减小容器之前尝试减小高水位标记。 对于非自动存储器表空间, REDUCE 子句必须后跟db-container-clause或all-containers-clause。
alter index rebuild 只扫描现有的索引块来实现索引的重建。 我们可以用10046事件来发现这个现象。 一 先看alter index rebuild: SQL> conn 请输入用户名: wwf/wwf 已连接。 SQL> drop table wwftest; 表已丢弃。 SQL> create table wwftest as select * from all_objects where rownum < 20000; ...
Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by setting options on the index.
For example – in the below command I’m rebuilding all indexes for the HumanResources.Department table:ALTER INDEX ALL ON HumanResources.Department REBUILD;So I received a few questions on this topic which I’ll detail here – along with the query I used to “prove” out the answers (and...
- ALTER INDEX REBUILD PARTITION - ALTER TABLE MODIFY PARTITION REBUILD UNUSABLE LOCAL INDEXES 可以查询DBA/ALL/USER_PARTITIONS看INDEX的状态。 7、ALTER TABLE MODIFY PARTITION REBUILD LOCAL INDEXES REBUILD该TABLE上所有不可用的LOCAL INDEX。 8、ALTER INDEX ... UNUSABLE ...