如果未同时指定 FILLFACTORPAD_INDEX 设置为 ON,则使用 sys.indexes 中的填充因子值。 OFF 考虑到中间级页上的键集,将中间级页填充到接近其容量的程度,以留出足够的空间,使之至少能够容纳索引的最大的一行。 如果 PAD_INDEX 设置为 ON 但未指定填充因子,则也会发生这种情况。 仅PAD_INDEX 当指定此选项时才 ...
Azure SQL Managed Instance SQL database in Microsoft Fabric This article describes how to add included (or nonkey) columns to extend the functionality of nonclustered indexes in SQL Server by using SQL Server Management Studio or Transact-SQL. By including nonkey columns, you can create nonclust...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance This article describes how to create indexes on a view. The first index created on a view must be a unique clustered index. After the unique clustered index has been created, you can create more nonclustered indexes. ...
For more information, see the REBUILD option for ALTER INDEX (Transact-SQL). Non-unique indexes. Filtered indexes can be non-unique, whereas indexed views must be unique. Filtered indexes are defined on one table and only support simple comparison operators. If you need a filter expression ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance This article describes how to create primary and secondary XML indexes. Create a primary XML index To create a primary XML index, use the CREATE INDEX (Transact-SQL)Transact-SQL DDL statement. Not all options available for ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed InstanceThis article describes how to create indexes on a view. The first index created on a view must be a unique clustered index. After the unique clustered index has been created, you can create more nonclustered indexes. Creatin...
CreateIndexes(IEnumerable<ITableIndex>, MigrationCommandListBuilder) 生成SQL 以创建给定索引。CreateIndexes(IEnumerable<ITableIndex>, MigrationCommandListBuilder) Source: SqlServerMigrationsSqlGenerator.cs 生成SQL 以创建给定索引。 C# 复制 protected virtual void CreateIndexes(System.Colle...
(2) 单击任务板中的“Create an Index” 链接,出现如图8-3 所示的索引创建向导界面。也可以从“Tools ”菜单中选择“izards” 菜单项,则出现如图5-17 所示的选择SQL Server 向导对话框,再从树型目录中选择“Database”下的“Create Index Wizard”选项,也会出现如图8-3 所示的索引创建向导界面。
What is SQL Server? Connect to the Database Engine What's new? Editions and features Release notes Business continuity Database design Hierarchical Data Collation Databases Event notification FILESTREAM, FileTable & BLOB Indexes Overview Heaps (tables without a clustered index) ...
选择要创建索引的表,单击右键,从快捷菜单中选择“所有任务(All Tasks)”子菜单中的“Manage Indexes”选项,将会出现如图8-9 所示的索引管理对话框,其中列出了表中已经存在的索引。选择“New” 按钮,进入如图8-10 所示的创建索引对话框。在图8-10中,输入要创建的索引的名称,再选择用于创建索引的列,并设置索引的...