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<title>exact: Exact Matching</title>
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<h4><a name="EqualsMatchEngine">7.1.5 <code>exact</code>: Exact Matching</a></h4>
<p><pre>matcher=exact values*='<matched-value>'</pre>
<blockquote>
<dl>
<dt><strong><code>values*</code>:</strong></dt>
<dd>
<ul>
<li><code>matched-value</code>: Value for exact match
</li>
</ul>
</dd>
</dl>
</blockquote>
</p>
<p>The <code>exact</code> matcher compares arbitrary key values
for exact equality.
Rows are considered to match only if the values in their
<code>matched-value</code> columns are exactly the same.
These values can be strings, numbers, or anything else.
A blank value never matches, not even with another blank one.
Since the <code>params</code> parameter holds no values,
it does not have to be specified.
Note that the values must also be of the same type, so for instance
a Long (64-bit) integer value will not match an Integer (32-bit) value.
</p>
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<hr><i>STILTS - Starlink Tables Infrastructure Library Tool Set<br>Starlink User Note256<br>STILTS web page:
<a href="http://www.starlink.ac.uk/stilts/">http://www.starlink.ac.uk/stilts/</a><br>Author email:
<a href="mailto:m.b.taylor@bristol.ac.uk">m.b.taylor@bristol.ac.uk</a><br>Mailing list:
<a href="mailto:topcat-user@jiscmail.ac.uk">topcat-user@jiscmail.ac.uk</a><br></i></body>
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