CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON { table | view } ( column [ ASC | DESC ] [ ,...n ] ) [ WITH < index_option > [ ,...n] ] [ ON filegroup ] < index_option > ::= { PAD_INDEX | FILLFACTOR = fillfactor | IGNORE_DUP_KEY | DROP_EXISTIN...
(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...
syntaxsql 複製 CREATE CLUSTERED COLUMNSTORE INDEX index_name ON [ database_name . [ schema ] . | schema . ] table_name [ORDER (column[,...n])] [WITH ( DROP_EXISTING = { ON | OFF } )] [;] CREATE [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON [ database_name . [ schema...
CREATE UNIQUE INDEX index1 ON schema1.table1 (column1 DESC, column2 ASC, column3 DESC); 主要方案:从SQL Server 2016 (13.x) 和 SQL 数据库开始,可针对列存储索引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...
To create a unique index on a table, using: SQL Server Management Studio Transact-SQL Before You Begin Benefits of a Unique Index Multicolumn unique indexes guarantee that each combination of values in the index key is unique. For example, if a unique index is created on a combination ofLas...
Create the unique clustered index on the view.When you execute UPDATE, DELETE or INSERT operations (Data Manipulation Language, or DML) on a table referenced by a large number of indexed views, or fewer but complex indexed views, those referenced indexed views have to be updated as well. As...
_table_name [ ( ref_column [ ,... n ] ) ] [ ON DELETE { NO ACTION | CASCADE | SET NULL | SET DEFAULT } ] [ ON UPDATE { NO ACTION | CASCADE | SET NULL | SET DEFAULT } ] [ NOT FOR REPLICATION ] | CHECK [ NOT FOR REPLICATION ] ( logical_expression ) } <table_index> ...
table_name}<xml_index_option>::={PAD_INDEX= {ON|OFF} |FILLFACTOR= fillfactor |SORT_IN_TEMPDB= {ON|OFF} |IGNORE_DUP_KEY=OFF|DROP_EXISTING= {ON|OFF} |ONLINE=OFF|ALLOW_ROW_LOCKS= {ON|OFF} |ALLOW_PAGE_LOCKS= {ON|OFF} |MAXDOP=max_degree_of_parallelism|XML_COMPRESSION= {ON|OFF} }...
syntaxsql 复制 CREATE CLUSTERED COLUMNSTORE INDEX index_name ON [ database_name . [ schema ] . | schema . ] table_name [ORDER (column[,...n])] [WITH ( DROP_EXISTING = { ON | OFF } )] [;] CREATE [ CLUSTERED | NONCLUSTERED ] INDEX index_name ON [ database_name . [ s...
syntaxsql 複製 CREATE CLUSTERED COLUMNSTORE INDEX index_name ON { database_name.schema_name.table_name | schema_name.table_name | table_name } [ ORDER ( column [ , ...n ] ) ] [ WITH ( DROP_EXISTING = { ON | OFF } ) ] -- default is OFF [;] ...