SQL 复制 WHERE StartDate > '20000101' AND EndDate <= '20000630' WHERE ComponentID IN (533, 324, 753) WHERE StartDate IN ('20000404', '20000905') AND EndDate IS NOT NULL 筛选索引不适用于 XML 索引和全文检索。 对于 UNIQUE 索引,只有所选行必须具有唯一的索引值。 筛选索引不允许有 IGNORE...
These include user-defined type variables or functions and user-defined functions, but can't reference a Transact-SQL statement. partition_number must exist or the statement fails. WITH ( <single_partition_rebuild_index_option> ) SORT_IN_TEMPDB, MAXDOP, DATA_COMPRESSION, and XML_COMPRESSION are...
These include user-defined type variables or functions and user-defined functions, but can't reference a Transact-SQL statement. partition_number must exist or the statement fails. WITH ( <single_partition_rebuild_index_option> ) SORT_IN_TEMPDB, MAXDOP, DATA_COMPRESSION, and XML_COMPRESSION are...
used in mounting database, 5-6 converting data ANSI datatypes, 12-23 program interface, 8-27 SQL/DS and DB2 datatypes, 12-23 correlation names inline views, 10-17 cost-based optimization, 21-8, 30-47 extensible optimization, 21-18 histograms, 21-9 query rewrite, 10-18 ...
Limitations and Restrictions Security 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...
In the Index tab, you can discover SQL Server index usage information related to overall index usage (such as total fragmentation) and data corresponding to individual indexes. You can also list your SQL Server indexes in Grid or Tree view with customizable columns including type, primary keys,...
Online index operations are available in Azure SQL Database and Azure SQL Managed Instance. Permissions Requires theALTERpermission on the table or view. Use SQL Server Management Studio In Object Explorer, expand the database that contains the table on which you want to rebuild an index online....
The sys.indexes, sys.tables, and sys.filegroups catalog views are queried to verify the index and table placement in the filegroups before and after the move.SQL Copy -- Create a clustered index on the PRIMARY filegroup if the index does not exist. IF NOT EXISTS (SELECT name FROM sys...
Applies to: SQL Server 2017 (14.x) and later versions Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric sys.index_resumable_operations is a system view that monitors and checks the current execution status for resumable Index rebuild or creation. Applies to...
All data types are allowed except text, ntext, and image. Starting with SQL Server 2012 (11.x), in Azure SQL Database, and in Azure SQL Managed Instance, if any one of the specified non-key columns are varchar(max), nvarchar(max), or varbinary(max) data types, the index can be bu...