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Find-DbaDbDuplicateIndex
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NAME Find-DbaDbDuplicateIndex
SYNOPSIS
Find duplicate and overlapping indexes.
SYNTAX
Find-DbaDbDuplicateIndex [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>
[[-SqlCredential] <Pscredential>] [[-Database] <System.Object[]>] [-IncludeOverlapping <Switch>] [-EnableException
<Switch>] [<CommonParameters>]
DESCRIPTION
This command will help you to find duplicate and overlapping indexes on a database or a list of databases.
On SQL Server 2008 and higher, the IsFiltered property will also be checked
Only supports CLUSTERED and NONCLUSTERED indexes.
Output:
TableName
IndexName
KeyColumns
IncludedColumns
IndexSizeMB
IndexType
CompressionDescription (When 2008+)
[RowCount]
IsDisabled
IsFiltered (When 2008+)
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
-IncludeOverlapping [<Switch>]
If this switch is enabled, indexes which are partially duplicated will be returned.
Example: If the first key column is the same between two indexes, but one has included columns and the other
not, this will be shown.
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 target SQL Server instance or instances.
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: Claudio Silva (@ClaudioESSilva)
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2005
Returns duplicate indexes found on sql2005
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -SqlCredential sqladmin
Finds exact duplicate indexes on all user databases present on sql2017, using SQL authentication.
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -Database db1, db2
Finds exact duplicate indexes on the db1 and db2 databases.
-------------------------- EXAMPLE 4 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -IncludeOverlapping
Finds both duplicate and overlapping indexes on all user databases.
RELATED LINKS
https://dbatools.io/Find-DbaDbDuplicateIndex
SYNOPSIS
Find duplicate and overlapping indexes.
SYNTAX
Find-DbaDbDuplicateIndex [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>
[[-SqlCredential] <Pscredential>] [[-Database] <System.Object[]>] [-IncludeOverlapping <Switch>] [-EnableException
<Switch>] [<CommonParameters>]
DESCRIPTION
This command will help you to find duplicate and overlapping indexes on a database or a list of databases.
On SQL Server 2008 and higher, the IsFiltered property will also be checked
Only supports CLUSTERED and NONCLUSTERED indexes.
Output:
TableName
IndexName
KeyColumns
IncludedColumns
IndexSizeMB
IndexType
CompressionDescription (When 2008+)
[RowCount]
IsDisabled
IsFiltered (When 2008+)
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
-IncludeOverlapping [<Switch>]
If this switch is enabled, indexes which are partially duplicated will be returned.
Example: If the first key column is the same between two indexes, but one has included columns and the other
not, this will be shown.
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 target SQL Server instance or instances.
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: Claudio Silva (@ClaudioESSilva)
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2005
Returns duplicate indexes found on sql2005
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -SqlCredential sqladmin
Finds exact duplicate indexes on all user databases present on sql2017, using SQL authentication.
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -Database db1, db2
Finds exact duplicate indexes on the db1 and db2 databases.
-------------------------- EXAMPLE 4 --------------------------
PS C:\\>Find-DbaDbDuplicateIndex -SqlInstance sql2017 -IncludeOverlapping
Finds both duplicate and overlapping indexes on all user databases.
RELATED LINKS
https://dbatools.io/Find-DbaDbDuplicateIndex