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                    <h1 id="get-dbaschemachangehistory">Get-DbaSchemaChangeHistory</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Stuart Moore (@napalmgram), stuart-moore.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/Get-DbaSchemaChangeHistory.ps1">Get-DbaSchemaChangeHistory</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Get-DbaSchemaChangeHistory">Get-DbaSchemaChangeHistory</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Gets DDL changes logged in the system trace.</p>
<h2 id="description">Description</h2>
<p>Queries the default system trace for any DDL changes in the specified time frame<br />
Only works with SQL 2005 and later, as the system trace didn't exist before then</p>
<h2 id="syntax">Syntax</h2>
<pre><code>Get-DbaSchemaChangeHistory
    [-SqlInstance] &lt;DbaInstanceParameter[]&gt;
    [[-SqlCredential] &lt;PSCredential&gt;]
    [[-Database] &lt;Object[]&gt;]
    [[-ExcludeDatabase] &lt;Object[]&gt;]
    [[-Since] &lt;DbaDateTime&gt;]
    [[-Object] &lt;String[]&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; Get-DbaSchemaChangeHistory -SqlInstance localhost
</code></pre>
<p>Returns all DDL changes made in all databases on the SQL Server instance localhost since the system trace began<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Get-DbaSchemaChangeHistory -SqlInstance localhost -Since (Get-Date).AddDays(-7)
</code></pre>
<p>Returns all DDL changes made in all databases on the SQL Server instance localhost in the last 7 days<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Get-DbaSchemaChangeHistory -SqlInstance localhost -Database Finance, Prod -Since (Get-Date).AddDays(-7)
</code></pre>
<p>Returns all DDL changes made in the Prod and Finance databases on the SQL Server instance localhost in the last 7 days<br></p>
<h5 id="example-4">Example:  4</h5>
<pre><code>PS C:\&gt; Get-DbaSchemaChangeHistory -SqlInstance localhost -Database Finance -Object AccountsTable -Since (Get-Date).AddDays(-7)
</code></pre>
<p>Returns all DDL changes made  to the AccountsTable object in the Finance database on the SQL Server instance localhost in the last 7 days<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 to allow the function to be executed against multiple SQL Server instances. <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="since">-Since</h5>
<p>A date from which DDL changes should be returned. Default is to start at the beginning of the current trace file<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="object">-Object</h5>
<p>The name of a SQL Server object you want to look for changes on<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="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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