For more information, see XML Indexes (SQL Server). SQL Server 2012 SP1 introduces a new type of XML index known as a Selective XML Index. This new index can improve querying performance over data stored as XML in SQL Server, allow for much faster indexing of large XML data workloads, ...
適用於:SQL Server Azure SQL 資料庫 Azure SQL 受控執行個體Azure Synapse AnalyticsAnalytics Platform System (PDW) 在資料表或檢視上建立關聯式索引。 也稱為資料列存放區索引,因為它是叢集或非叢集的 B 型樹狀結構索引。 您可以在資料表中含有資料之前,先建立資料列存放區索引。 特別是在查詢會從特定資料行中...
Transact-SQL 語法慣例 語法 SQL Server、Azure SQL 資料庫 和 Azure SQL 受控執行個體 的語法。 syntaxsql 複製 ALTER INDEX { index_name | ALL } ON { REBUILD { [ PARTITION = ALL [ WITH ( <rebuild_index_option> [ , ...n ] ) ] ] | [ PARTITION = partition_number [ WITH ( <single...
IHindextypes (Transact-SQL) บทความ 01/03/2566 Applies to:SQL Server TheIHindextypessystem table contains one row for each non-SQL Server index type supported for non-SQL Server Publishers. This table is stored in the distribution database. ...
IndexType IndexType 생성자 속성 메서드 IndexTypeKind InlineDerivedTable InlineFunctionOption InlineResultSetDefinition InPredicate InsertBulkColumnDefinition InsertBulkStatement InsertMergeAction InsertOption InsertSource InsertSpecification InsertStatement IntegerLiteral InternalOpenRowset IPv4 IsolationLeve...
当然,这里说的index指的是SQL CREATE INDEX 语句 CREATE INDEX index_name ON table_name (column_name) 大多数情况下,index会被自动调用。 可以通过explain select XXX来查看语句中,index的使用情况。(explain只能看select) 最主要看的就是type这一列。
Sql Server中的全文索引(下面统一使用FULLTEXT INDEX来表示全文索引),是一种特定语言搜索索引功能。它和LIKE不一样,LIKE主要是根据搜索模板搜索数据,它的效率比FULLTEXT INDEX要低。在几百万的字符串中,LIKE需要花几分钟才能返回的结果,FULLTEXT INDEX可能只需要几秒钟。
These include user-defined type variables or functions and user-defined functions, but can't reference a Transact-SQL statement. partition_number must exist or the statement fails. WITH ( <single_partition_rebuild_index_option> ) SORT_IN_TEMPDB, MAXDOP, DATA_COMPRESSION, and XML_COMPRESSION are...
(1)SQL Server使用默认索引 USE TSQL2012 GO SELECT*FROM Sales.Orders 上述就不用我再啰嗦了,使用默认主键创建的聚集索引来执行查询执行计划。 (2)SQL Server使用强制索引 USE TSQL2012 GO SELECT custid FROM Sales.Orders WITH(INDEX(idx_nc_custid)) ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric When you perform online index operations, the following guidelines apply: Clustered indexes must be created, rebuilt, or dropped offline when the underlying table contains the following large object...