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...
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...
CREATE INDEX 既可以创建一个可改变表的物理顺序的簇索引,也可以创建提高查询性能的非簇索引。其语法如下: CREATE [UNIQUE] [CLUSTERED | NONCLUSTERED] INDEX index_name ON {table | view } column [ ASC | DESC ] [,...n]) [WITH [PAD_INDEX] [ [, ] FILLFACTOR = fillfactor] [ [, ] IGNORE_D...
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. ...
CREATE XML INDEX CREATE SPATIAL INDEX CREATE COLUMNSTORE INDEX Transact-SQL 语法约定 语法 SQL Server 和 Azure SQL 数据库的语法 CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON ( column [ ASC | DESC ] [ ,...n ] ) [ INCLUDE...
When you create a UNIQUE constraint, a unique nonclustered index is created to enforce a UNIQUE constraint by default. You can specify a unique clustered index if a clustered index on the table doesn't already exist. An index created as part of the constraint is automatically given the same...
(Clustered indexes are defined in the article Clustered and nonclustered indexes.) Typical implementations Clustered indexes are implemented in the following ways: PRIMARY KEY and UNIQUE constraints When you create a PRIMARY KEY constraint, a unique clustered index on the column or columns is ...
You change the collation of the column that the nonclustered index is created on. You re-create a nonclustered index on the column. In this scenario, you receive the following error message: ...
You change the collation of the column that the nonclustered index is created on. You re-create a nonclustered index on the column. In this scenario, you receive the following error message: Location: sobuild.c:3392 Expre...
Include nonkey columns in a nonclustered index to avoid exceeding the current index size limitations of a maximum of 32 key columns and a maximum index key size of 1,700 bytes (16 key columns and 900 bytes prior to SQL Server 2016 (13.x)). The Database Engine doesn't consider nonkey...