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                    <h1 id="find-dbasimilartable">Find-DbaSimilarTable</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Jana Sattainathan (@SQLJana), sqljana.wordpress.com</td>
</tr>
<tr>
<td><strong>Availability</strong></td>
<td>Windows, Linux, macOS</td>
</tr>
</tbody>
</table>
<p> </p>
<p>Want to see the source code for this command? Check out <a href="https://github.com/dataplat/dbatools/blob/master/public/Find-DbaSimilarTable.ps1">Find-DbaSimilarTable</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Find-DbaSimilarTable">Find-DbaSimilarTable</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Returns all tables/views that are similar in structure by comparing the column names of matching and matched tables/views</p>
<h2 id="description">Description</h2>
<p>This function can either run against specific databases or all databases searching all/specific tables and views including in system databases.<br />
Typically one would use this to find for example archive version(s) of a table whose structures are similar.<br />
This can also be used to find tables/views that are very similar to a given table/view structure to see where a table/view might be used.</p>
<p>More information can be found here: <a href="https://sqljana.wordpress.com/2017/03/31/sql-server-find-tables-with-similar-table-structure/">https://sqljana.wordpress.com/2017/03/31/sql-server-find-tables-with-similar-table-structure/</a></p>
<h2 id="syntax">Syntax</h2>
<pre><code>Find-DbaSimilarTable
    [-SqlInstance] &lt;DbaInstanceParameter[]&gt;
    [[-SqlCredential] &lt;PSCredential&gt;]
    [[-Database] &lt;Object[]&gt;]
    [[-ExcludeDatabase] &lt;Object[]&gt;]
    [[-SchemaName] &lt;String&gt;]
    [[-TableName] &lt;String&gt;]
    [-ExcludeViews]
    [-IncludeSystemDatabases]
    [[-MatchPercentThreshold] &lt;Int32&gt;]
    [-EnableException]
    [&lt;CommonParameters&gt;]

</code></pre>
<p> </p>
<h2 id="examples">Examples</h2>
<p> </p>
<h5 id="example-1">Example:  1</h5>
<pre><code>PS C:\&gt; Find-DbaSimilarTable -SqlInstance DEV01
</code></pre>
<p>Searches all user database tables and views for each, returns all tables or views with their matching tables/views and match percent<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Find-DbaSimilarTable -SqlInstance DEV01 -Database AdventureWorks
</code></pre>
<p>Searches AdventureWorks database and lists tables/views and their corresponding matching tables/views with match percent<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Find-DbaSimilarTable -SqlInstance DEV01 -Database AdventureWorks -SchemaName HumanResource
</code></pre>
<p>Searches AdventureWorks database and lists tables/views in the HumanResource schema with their corresponding matching tables/views with match percent<br></p>
<h5 id="example-4">Example:  4</h5>
<pre><code>PS C:\&gt; Find-DbaSimilarTable -SqlInstance DEV01 -Database AdventureWorks -SchemaName HumanResource -Table Employee
</code></pre>
<p>Searches AdventureWorks database and lists tables/views in the HumanResource schema and table Employee with its corresponding matching tables/views with match percent<br></p>
<h5 id="example-5">Example:  5</h5>
<pre><code>PS C:\&gt; Find-DbaSimilarTable -SqlInstance DEV01 -Database AdventureWorks -MatchPercentThreshold 60
</code></pre>
<p>Searches AdventureWorks database and lists all tables/views with its corresponding matching tables/views with match percent greater than or equal to 60<br></p>
<h3 id="required-parameters">Required Parameters</h3>
<h5 id="sqlinstance">-SqlInstance</h5>
<p>The target SQL Server instance or instances. This can be a collection and receive pipeline input <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>true (ByValue)</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="optional-parameters">Optional Parameters</h3>
<h5 id="sqlcredential">-SqlCredential</h5>
<p>Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).<br />
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.<br />
For MFA support, please use Connect-DbaInstance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="database">-Database</h5>
<p>The database(s) to process - this list is auto-populated from the server. If unspecified, all databases will be processed.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="excludedatabase">-ExcludeDatabase</h5>
<p>The database(s) to exclude - this list is auto-populated from the server<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="schemaname">-SchemaName</h5>
<p>If you are looking in a specific schema whose table structures is to be used as reference structure, provide the name of the schema.<br />
If no schema is provided, looks at all schemas<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="tablename">-TableName</h5>
<p>If you are looking in a specific table whose structure is to be used as reference structure, provide the name of the table.<br />
If no table is provided, looks at all tables<br />
If the table name exists in multiple schemas, all of them would qualify<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="excludeviews">-ExcludeViews</h5>
<p>By default, views are included. You can exclude them by setting this switch to $false<br />
This excludes views in both matching and matched list<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="includesystemdatabases">-IncludeSystemDatabases</h5>
<p>By default system databases are ignored but you can include them within the search using this parameter<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="matchpercentthreshold">-MatchPercentThreshold</h5>
<p>The minimum percentage of column names that should match between the matching and matched objects.<br />
Entries with no matches are eliminated<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>0</td>
</tr>
</tbody>
</table>
<h5 id="enableexception">-EnableException</h5>
<p>By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.<br />
This avoids overwhelming you with &quot;sea of red&quot; exceptions, but is inconvenient because it basically disables advanced scripting.<br />
Using this switch turns this &quot;nice by default&quot; feature off and enables you to catch exceptions with your own try/catch.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<p> </p>

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