索引创建在数据表或者视图的字段上,生成索引页,存放于数据库中。 --分类:在SQL Server中,根据索引的作用和存储方式的不同,将索引分为聚集索引和非聚集索引两类。 1)聚集索引:指数据库的物理顺序与被创建索引的字段顺序完全相同。同一个数据表最多只能创建一个聚集索引。默认情况下主键自动被创建为聚集索引。聚集...
如需詳細資訊,請參閱 FILESTREAM (SQL Server)。 ::= 要編製索引的完整或非完整物件。 database_name 資料庫的名稱。 schema_name 資料表或檢視所屬之結構描述的名稱。 table_or_view_name 要建立索引之資料表或檢視的名稱。 若要在檢視上建立索引,必須使用 定義 SCHEMABINDING檢視。 必須先在檢視表上建立唯一...
OPTIMIZE_FOR_SEQUENTIAL_KEY = { ON |OFF } 適用於:SQL Server 2019 (15.x) 和更新版本、Azure SQL Database 和 Azure SQL 受控實例 指定是否要優化以避免最後一頁插入爭用。 預設值為 OFF。 如需詳細資訊,請參閱 循序索引鍵。 MAXDOP = max_degree_of_parallelism 覆寫索引作業 組態選項 平行處理原則的...
The view doesn't have to be explicitly referenced in the query for the query optimizer to use it. Databases on primary replicas in Azure SQL Database automatically generate database advisor performance recommendations for indexes. You can optionally enable automatic index tuning. Query Store helps...
table_or_view_name 要为其建立索引的表或视图的名称。 若要在视图上创建索引,必须使用该视图定义 SCHEMABINDING该视图。 必须先为视图创建唯一的聚集索引,才能为该视图创建非聚集索引。 有关索引视图的详细信息,请参阅 “备注”。 从SQL Server 2016 (13.x) 开始,该对象可以是聚集列存储索引存储的表。 当<dat...
You can perform concurrent online index DDL operations on the same table or view only when you're creating multiple new nonclustered indexes, or reorganizing nonclustered indexes. All other online index operations performed at the same time fail. For example, you can't create a new index online...
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. Transact-SQL syntax conventions Syntax Syntax for SQL Server, Azure SQL Database, and Azure SQL Managed Instance. syntaxsql Copy ...
The view doesn't have to be explicitly referenced in the query for the query optimizer to use it. Databases on primary replicas in Azure SQL Database automatically generate database advisor performance recommendations for indexes. You can optionally enable automatic index tuning. Query Store helps ...
The view doesn't have to be explicitly referenced in the query for the query optimizer to use it. Databases on primary replicas in Azure SQL Database automatically generate database advisor performance recommendations for indexes. You can optionally enable automatic index tuning. Query Store helps ...
Easily view SQL Server indexes for clear insights When it comes to managing your SQL Server index usage, SolarWinds® SQL Sentry® is designed to offer an advantage by clearly and accurately listing indexes—including SQL Server unused indexes—in a single tab. In the Index tab, you can ...