Indexes are very helpful to improve SQL Server query performance, but sometimes indexes get created that are not helpful or no longer needed. In this article, we look at various ways to delete a SQL Server index. Solution The most common reasons to drop an index are because it’s either u...
After an index is dropped, the resulting heap appears in the sys.indexes catalog view with NULL in the name column. To view the table name, join sys.indexes with sys.tables on object_id. For an example query, see example D.On multiprocessor computers that are running SQL Server 2005 ...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ÉcouteurIPEndpointProtocolOption ListTypeCopyOption Littéral LiteralAtomicBlockOption LiteralAuditTargetOption LiteralAvailability...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ListenerIPEndpointProtocolOption ListTypeCopyOption 文本 LiteralAtomicBlockOption ...
A view is a T-SQL SELECT statement encapsulated in a SQL Server object. MSSQLTips.com previously publisheda quick and easy-to-read introduction to views. This tip digs more deeply into the topic with coverage of syntax, including how to drop views and alter views, data setup for a view...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ListenerIPEndpointProtocolOption ListTypeCopyOption 常值 LiteralAtomicBlockOption LiteralAuditTargetOption LiteralAvailabilityGro...
In SQL Server, the FileTables feature uses a directory structure to store files. Learn how to create a new FileTable or alter or drop an existing FileTable.
snapshots (SQL Server). Dropping a database snapshot clears entries in the plan cache associated with the database snapshot, not the instance as a whole. Clearing the plan cache causes a recompilation of all subsequent execution plans and can cause a sudden, temporary decrease in query ...
Dropping a database snapshot clears the plan cache for the instance of SQL Server. Clearing the plan cache causes a recompilation of all subsequent execution plans and can cause a sudden, temporary decrease in query performance. For each cleared cachestore in the plan cache, the SQL Server er...
You can populate a list box, drop-down list box, or combo box with data from a query data connection to a Microsoft SQL Server database. In this article Overview Before you begin Step 1: Add a query data connection Step 2: Configu...