(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。 (3) 单击...
CREATE UNIQUE INDEX index1 ON schema1.table1 (column1 DESC, column2 ASC, column3 DESC); 主要方案: 从Azure SQL 数据库和 Azure SQL 托管实例中的 SQL Server 2016(13.x)开始,可以在列存储索引上使用非聚集索引来提高数据仓库查询性能。 有关详细信息,请参阅 列存储索引 - 数据仓库。 有关其他类型...
PAD_INDEX指定填充索引的内部节点的行数,至少应大于等于两行。PAD_INDEX 选项只有在FILLFACTOR 选项指定后才起作用。因为PAD_INDEX 使用与FILLFACTOR 相同的百分比。缺省时,SQL Server 确保每个索引页至少有能容纳一条最大索引行数据的空闲空间。如果FILLFACTOR 指定的百分比不够容纳一行数据S,QL Server 会自动内部更改百...
Using SQL Server Management StudioTo create a unique index by using the Table DesignerIn Object Explorer, expand the database that contains the table on which you want to create a unique index. Expand the Tables folder. Right-click the table on which you want to create a unique index and ...
Using SQL Server Management StudioTo create a unique index by using the Table DesignerIn Object Explorer, expand the database that contains the table on which you want to create a unique index. Expand the Tables folder. Right-click the table on which you want to create a unique index and ...
An index can be created before there is data in the table.. Copy CREATE [UNIQUE] [NONCLUSTERED] INDEX index_name ON table_name (column_name [ASC|DESC][,…n]) WITH (STATISTICS_NORECOMPUTE = { ON | OFF })] Arguments Expand table Term Definition UNIQUE Creates a unique index on a...
SQL Copy CREATE UNIQUE INDEX index1 ON schema1.table1 (column1 DESC, column2 ASC, column3 DESC); Key scenario: Starting with SQL Server 2016 (13.x), in Azure SQL Database, and in Azure SQL Managed Instance, you can use a nonclustered index on a columnstore index to improve data...
Using SQL Server Management Studio to create an index with nonkey columns In Object Explorer, select the plus sign to expand the database that contains the table on which you want to create an index with nonkey columns. Select the plus sign to expand the Tables folder. Select the plus sig...
Using SQL Server Management Studio To create a nonclustered index by using the Table Designer In Object Explorer, expand the database that contains the table on which you want to create a nonclustered index. Expand theTablesfolder. Right-click the table on which you want to create a nonclust...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric This article describes how to create a filtered index using SQL Server Management Studio (SSMS) or Transact-SQL. A filtered index is an optimized disk-based rowstore nonclustered index especially...