# C1.DataEngine.Op.SubStr

## Content

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<h1 id="C1_DataEngine_Op_SubStr_" data-uid="C1.DataEngine.Op.SubStr*">SubStr Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_DataEngine_Op_SubStr_" data-uid="C1.DataEngine.Op.SubStr*"></a>
<h4 id="C1_DataEngine_Op_SubStr_C1_DataEngine_Column_System_Int32_System_Int32_" data-uid="C1.DataEngine.Op.SubStr(C1.DataEngine.Column,System.Int32,System.Int32)">SubStr(Column, int, int)</h4>
<div class="markdown level1 summary"><p>Substring: unary, simple (without aggregation) operation on strings.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public static ColumnOp SubStr(Column col, int startIndex, int length)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Shared Function SubStr(col As Column, startIndex As Integer, length As Integer) As ColumnOp</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.DataEngine.Column.html">Column</a></td>
      <td><span class="parametername">col</span></td>
      <td><p>String operand.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td><span class="parametername">startIndex</span></td>
      <td><p>Extract substring starting from this index.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td><span class="parametername">length</span></td>
      <td><p>Length of the substring.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="C1.DataEngine.ColumnOp.html">ColumnOp</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
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