CREATE[UNIQUE][CLUSTERED|NONCLUSTERED]INDEXindex_nameON(column_name[ASC|DESC][,...n])[WITH<backward_compatible_index_option>[,...n]][ON{filegroup_name|"default"}]::={[database_name.[owner_name].|owner_name.]table_or_view_name}<backward_compatible_index_option>::={PAD_INDEX|FILLFACTOR...
Index XML (SQL Server) Texte intégral Un type spécial d’index fonctionnel par jeton qui est construit et géré par le Moteur d’indexation et de recherche en texte intégral Microsoft pour SQL Server. Il permet de prendre en charge efficacement toute recherche de mot sophistiqué dans des ...
SQL Server使用4种类型的数据页面来管理表或索引:IAM(Index Allocation Map),数据页,文本/图像页和索引页。 在windows中,我们对文件执行的每一步操作,在磁盘上的物理位置只有系统(system)才知道;SQL Server沿袭了这种工作方式,在插入数据过程中,不但每个字段在数据页的保存位置是随机的,而且每个数据页在“堆”中的...
Should there be only one column used, a single-column index should be the choice. Should there be two or more columns that are frequently used in the WHERE clause as filters, the composite index would be the best choice 不适合使用索引的场景 Indexes should not be used on small tables Table...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Available index types The following table lists the types of indexes available in SQL Server and provides links to additional information. Expand table Index typeDescriptionAdditional information Hash...
XMLA shredded, and persisted, representation of the XML binary large objects (BLOBs) in thexmldata type column.XML Indexes (SQL Server) Full-textA special type of token-based functional index that is built and maintained by the Microsoft Full-Text Engine for SQL Server. It provides efficient ...
ON 指定要删除并重新生成现有索引,其必须具有相同名称作为参数 index_name。 OFF 指定不删除和重新生成现有的索引。 如果指定的索引名称已经存在,SQL Server 将显示一个错误。 ONLINE = {ON |OFF}:表示建立索引时是否允许正常访问,即是否对表进行锁定。默认为 OFF。
SQL Server documentation uses the term B-tree generally in reference to indexes. In rowstore indexes, SQL Server implements a B+ tree. This does not apply to columnstore indexes or in-memory data stores. For more information, see the SQL Server and Azure SQL index architecture and design guid...
SQL Server documentation uses the term B-tree generally in reference to indexes. In rowstore indexes, SQL Server implements a B+ tree. This does not apply to columnstore indexes or in-memory data stores. For more information, see the SQL Server and Azure SQL index architecture and design guid...
SQL Server Native Client OLE DB 访问接口公开了IIndexDefinition::CreateIndex函数,从而允许使用者对 SQL Server 表定义新的索引。 SQL Server Native Client OLE DB 访问接口将表索引创建为索引或约束。SQL Server 向表所有者、数据库所有者和特定管理角色的成员提供了约束创建特权。默认情况下,只有表所有者才能对...