索引主要目的是提高了SQL Server系统的性能,加快数据的查询速度与减少系统的响应时间 。 但是索引对于提高查询性能也不是万能的,也不是建立越多的索引就越好。索引建少了,用 WHERE 子句找数据效率低,不利于查找数据。索引建多了,不利于新增、修改和删除等操作,因为做这些操作时,SQL SERVER 除了要更新数据表本身,还...
預設值為 OFF Azure SQL 資料庫 超大規模資料庫除外。 針對超大規模資料庫中的所有索引建置作業,除非使用可繼續的索引組建,否則一律會 SORT_IN_TEMPDBON。 針對可繼續的索引組建,SORT_IN_TEMPDB 一律會 OFF。 開啟 用來建置索引的中繼排序結果會儲存在 中 tempdb。 這可能會縮短建立索引所需的時間。 不過,這會...
SQL Server parse and compile time: CPU time = 0 ms, elapsed time = 0 ms. SQL Server parse and compile time: CPU time = 0 ms, elapsed time = 0 ms. (3864 row(s) affected) Table 'SalesOrderDetailDemo'. Scan count 1, logical reads 757, physical reads 0, read-ahead reads 0, lob ...
This topic describes what fill factor is and how to specify a fill factor value on an index in SQL Server by using SQL Server Management Studio or Transact-SQL.The fill-factor option is provided for fine-tuning index data storage and performance. When an index is created or rebuilt, the ...
ObjectInSpace Gets the Boolean property value that specifies whether the object exists in isolation, or whether it is directly or indirectly connected to the instance of SQL Server. (从 SqlSmoObject 继承。) OnlineIndexOperation Gets or sets the Boolean property value that specifies whether the in...
(繼承自 SqlSmoObject。) CheckVersionBelow90 (繼承自 SqlSmoObject。) CleanObject Cleans the referenced object. (繼承自 ScriptNameObjectBase。) Create Creates an index on the instance of SQL Server as defined by the Index object. CreateImpl (繼承自 SqlSmoObject。) CreateImplFinish (繼承自 Sql...
The fix for this issue is also included in the following general distribution release (GDR) updates: Security Update for SQL Server 2014 QFE This update includes Cumulative Update 8, this important fix, and the required MS15-058 security updates....
指定必须通过调用 ALTER FULLTEXT INDEX ... START UPDATE POPULATION Transact-SQL 语句来手动传播被跟踪的更改(手动填充)。 可以使用 SQL Server 代理来定期调用此 Transact-SQL 语句。 AUTO 指定当基表中的数据修改时,所跟踪的更改将会自动传播(自动填充)。 尽管是自动传播更改,但这些更改可能不会立即反映到全文...
(SELECTnameFROMsys.filegroupsWHEREname= N'NewGroup')BEGINALTERDATABASEAdventureWorks2022ADDFILEGROUP NewGroup;ALTERDATABASEAdventureWorks2022ADDFILE(NAME= File1, FILENAME ='C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA\File1.ndf')TOFILEGROUP NewGroup;ENDGO--Verify new ...
SORT_IN_TEMPDB = { ON | OFF } Applies to: SQL Server 2008 (10.0.x) and later versions Specifies whether to store sort results intempdb. The default isOFF. ON The intermediate sort results that are used to build the index are stored intempdb. This might reduce the time required to cre...