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Find-DbaDbUnusedIndex

Mon Jan 13, 2020 10:08 am

NAME Find-DbaDbUnusedIndex



SYNOPSIS

Find unused indexes





SYNTAX

Find-DbaDbUnusedIndex [[-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>]

[[-SqlCredential] <Pscredential>] [[-Database] <System.Object[]>] [[-ExcludeDatabase] <System.Object[]>]

[-IgnoreUptime <Switch>] [[-InputObject] <Microsoft.SqlServer.Management.Smo.Database[]>] [-EnableException

<Switch>] [<CommonParameters>]





DESCRIPTION

This command will help you to find Unused indexes on a database or a list of databases



For now only supported for CLUSTERED and NONCLUSTERED indexes





PARAMETERS

-Database [<System.Object[]>]

The database(s) to process. Options for this list are auto-populated from the server. If unspecified, all

databases will be processed.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-EnableException [<Switch>]

By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.

This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables

advanced scripting.

Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own

try/catch.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-ExcludeDatabase [<System.Object[]>]

Specifies the database(s) to exclude from processing. Options for this list are auto-populated from the server.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-IgnoreUptime [<Switch>]

Less than 7 days uptime can mean that analysis of unused indexes is unreliable, and normally no results will

be returned. By setting this option results will be returned even if the Instance has been running for less

that 7 days.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-InputObject [<Microsoft.SqlServer.Management.Smo.Database[]>]

Enables piping from Get-DbaDatabase



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-SqlCredential [<Pscredential>]

Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).



Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory -

Integrated are all supported.



For MFA support, please use Connect-DbaInstance.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-SqlInstance [<Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>]

The SQL Server you want to check for unused indexes.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug,

ErrorAction, ErrorVariable, WarningAction, WarningVariable,

OutBuffer, PipelineVariable, and OutVariable. For more information, see

about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).



INPUTS



OUTPUTS



NOTES





Tags: Index

Author: Aaron Nelson (@SQLvariant), SQLvariant.com



Website: https://dbatools.io

Copyright: (c) 2018 by dbatools, licensed under MIT

License: MIT https://opensource.org/licenses/MIT



-------------------------- EXAMPLE 1 --------------------------



PS C:\\>Find-DbaDbUnusedIndex -SqlInstance sql2016 -Database db1, db2



Finds unused indexes on db1 and db2 on sql2016

-------------------------- EXAMPLE 2 --------------------------



PS C:\\>Find-DbaDbUnusedIndex -SqlInstance sql2016 -SqlCredential $cred



Finds unused indexes on db1 and db2 on sql2016 using SQL Authentication to connect to the server

-------------------------- EXAMPLE 3 --------------------------



PS C:\\>Get-DbaDatabase -SqlInstance sql2016 | Find-DbaDbUnusedIndex



Finds unused indexes on all databases on sql2016



RELATED LINKS

https://dbatools.io/Find-DbaDbUnusedIndex