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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql</a></div>
<h2 title="Class SqlCollation" class="title">Class SqlCollation</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.calcite.sql.SqlCollation</li>
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<pre>public class <span class="typeNameLabel">SqlCollation</span>
extends java.lang.Object
implements java.io.Serializable</pre>
<div class="block">A <code>SqlCollation</code> is an object representing a <code>Collate</code>
statement. It is immutable.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../serialized-form.html#org.apache.calcite.sql.SqlCollation">Serialized Form</a></dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a></span></code></th>
<td class="colLast">
<div class="block">A &lt;character value expression&gt; consisting of a column
reference has the coercibility characteristic Implicit, with collating
sequence as defined when the column was created.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>private <a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#coercibility">coercibility</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#COERCIBLE">COERCIBLE</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#collationName">collationName</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#IMPLICIT">IMPLICIT</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>protected java.util.Locale</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#locale">locale</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>protected java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#strength">strength</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../util/SerializableCharset.html" title="class in org.apache.calcite.util">SerializableCharset</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#wrappedCharset">wrappedCharset</a></span></code></th>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.String,org.apache.calcite.sql.SqlCollation.Coercibility)">SqlCollation</a></span>&#8203;(java.lang.String&nbsp;collation,
<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a>&nbsp;coercibility)</code></th>
<td class="colLast">
<div class="block">Creates a Collation by its name and its coercibility</div>
</td>
</tr>
<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.sql.SqlCollation.Coercibility)">SqlCollation</a></span>&#8203;(<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a>&nbsp;coercibility)</code></th>
<td class="colLast">
<div class="block">Creates a SqlCollation with the default collation name and the given
coercibility.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>&#8203;(java.lang.Object&nbsp;o)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.nio.charset.Charset</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCharset()">getCharset</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoercibility()">getCoercibility</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected static <a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoercibilityDyadic(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)">getCoercibilityDyadic</a></span>&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</code></th>
<td class="colLast">
<div class="block">Returns the result for <a href="#getCoercibilityDyadicComparison(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)"><code>getCoercibilityDyadicComparison(org.apache.calcite.sql.SqlCollation, org.apache.calcite.sql.SqlCollation)</code></a> and
<a href="#getCoercibilityDyadicOperator(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)"><code>getCoercibilityDyadicOperator(org.apache.calcite.sql.SqlCollation, org.apache.calcite.sql.SqlCollation)</code></a>.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoercibilityDyadicComparison(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)">getCoercibilityDyadicComparison</a></span>&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</code></th>
<td class="colLast">
<div class="block">Returns the collating sequence (the collation name) to use for the
resulting value of a comparison.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoercibilityDyadicOperator(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)">getCoercibilityDyadicOperator</a></span>&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</code></th>
<td class="colLast">
<div class="block">Returns the collating sequence (the collation name) and the coercibility
for the resulting value of a dyadic operator.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoercibilityDyadicOperatorThrows(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)">getCoercibilityDyadicOperatorThrows</a></span>&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</code></th>
<td class="colLast">
<div class="block">Returns the collating sequence (the collation name) and the coercibility
for the resulting value of a dyadic operator.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCollationName()">getCollationName</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unparse(org.apache.calcite.sql.SqlWriter)">unparse</a></span>&#8203;(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer)</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li>
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<h3>Field Detail</h3>
<a id="COERCIBLE">
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<h4>COERCIBLE</h4>
<pre>public static final&nbsp;<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> COERCIBLE</pre>
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<h4>IMPLICIT</h4>
<pre>public static final&nbsp;<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> IMPLICIT</pre>
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<a id="collationName">
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<h4>collationName</h4>
<pre>protected final&nbsp;java.lang.String collationName</pre>
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<h4>wrappedCharset</h4>
<pre>protected final&nbsp;<a href="../util/SerializableCharset.html" title="class in org.apache.calcite.util">SerializableCharset</a> wrappedCharset</pre>
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<a id="locale">
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<h4>locale</h4>
<pre>protected final&nbsp;java.util.Locale locale</pre>
</li>
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<h4>strength</h4>
<pre>protected final&nbsp;java.lang.String strength</pre>
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<h4>coercibility</h4>
<pre>private final&nbsp;<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a> coercibility</pre>
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<h3>Constructor Detail</h3>
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<h4>SqlCollation</h4>
<pre>public&nbsp;SqlCollation&#8203;(java.lang.String&nbsp;collation,
<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a>&nbsp;coercibility)</pre>
<div class="block">Creates a Collation by its name and its coercibility</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>collation</code> - Collation specification</dd>
<dd><code>coercibility</code> - Coercibility</dd>
</dl>
</li>
</ul>
<a id="&lt;init&gt;(org.apache.calcite.sql.SqlCollation.Coercibility)">
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<h4>SqlCollation</h4>
<pre>public&nbsp;SqlCollation&#8203;(<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a>&nbsp;coercibility)</pre>
<div class="block">Creates a SqlCollation with the default collation name and the given
coercibility.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>coercibility</code> - Coercibility</dd>
</dl>
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<h4>equals</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;equals&#8203;(java.lang.Object&nbsp;o)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>equals</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
</dl>
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<h4>hashCode</h4>
<pre class="methodSignature">public&nbsp;int&nbsp;hashCode()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>hashCode</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
</dl>
</li>
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<h4>getCoercibilityDyadicOperator</h4>
<pre class="methodSignature">public static&nbsp;<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;getCoercibilityDyadicOperator&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</pre>
<div class="block">Returns the collating sequence (the collation name) and the coercibility
for the resulting value of a dyadic operator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>col1</code> - first operand for the dyadic operation</dd>
<dd><code>col2</code> - second operand for the dyadic operation</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the resulting collation sequence. The "no collating sequence"
result is returned as null.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../util/Glossary.html#SQL99"><code>SQL:1999 Part 2 Section 4.2.3 Table 2</code></a></dd>
</dl>
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<h4>getCoercibilityDyadicOperatorThrows</h4>
<pre class="methodSignature">public static&nbsp;<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;getCoercibilityDyadicOperatorThrows&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</pre>
<div class="block">Returns the collating sequence (the collation name) and the coercibility
for the resulting value of a dyadic operator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>col1</code> - first operand for the dyadic operation</dd>
<dd><code>col2</code> - second operand for the dyadic operation</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the resulting collation sequence</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../runtime/CalciteException.html" title="class in org.apache.calcite.runtime">CalciteException</a></code> - from
<a href="../runtime/CalciteResource.html#invalidCompare(java.lang.String,java.lang.String,java.lang.String,java.lang.String)"><code>CalciteResource.invalidCompare(java.lang.String, java.lang.String, java.lang.String, java.lang.String)</code></a> or
<a href="../runtime/CalciteResource.html#differentCollations(java.lang.String,java.lang.String)"><code>CalciteResource.differentCollations(java.lang.String, java.lang.String)</code></a>
if no collating sequence can be deduced</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../util/Glossary.html#SQL99"><code>SQL:1999 Part 2 Section 4.2.3 Table 2</code></a></dd>
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<h4>getCoercibilityDyadicComparison</h4>
<pre class="methodSignature">public static&nbsp;java.lang.String&nbsp;getCoercibilityDyadicComparison&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</pre>
<div class="block">Returns the collating sequence (the collation name) to use for the
resulting value of a comparison.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>col1</code> - first operand for the dyadic operation</dd>
<dd><code>col2</code> - second operand for the dyadic operation</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the resulting collation sequence. If no collating
sequence could be deduced throws a
<a href="../runtime/CalciteResource.html#invalidCompare(java.lang.String,java.lang.String,java.lang.String,java.lang.String)"><code>CalciteResource.invalidCompare(java.lang.String, java.lang.String, java.lang.String, java.lang.String)</code></a></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../util/Glossary.html#SQL99"><code>SQL:1999 Part 2 Section 4.2.3 Table 3</code></a></dd>
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<h4>getCoercibilityDyadic</h4>
<pre class="methodSignature">protected static&nbsp;<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;getCoercibilityDyadic&#8203;(<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col1,
<a href="SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;col2)</pre>
<div class="block">Returns the result for <a href="#getCoercibilityDyadicComparison(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)"><code>getCoercibilityDyadicComparison(org.apache.calcite.sql.SqlCollation, org.apache.calcite.sql.SqlCollation)</code></a> and
<a href="#getCoercibilityDyadicOperator(org.apache.calcite.sql.SqlCollation,org.apache.calcite.sql.SqlCollation)"><code>getCoercibilityDyadicOperator(org.apache.calcite.sql.SqlCollation, org.apache.calcite.sql.SqlCollation)</code></a>.</div>
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<h4>toString</h4>
<pre class="methodSignature">public&nbsp;java.lang.String&nbsp;toString()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>toString</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
</dl>
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<pre class="methodSignature">public&nbsp;void&nbsp;unparse&#8203;(<a href="SqlWriter.html" title="interface in org.apache.calcite.sql">SqlWriter</a>&nbsp;writer)</pre>
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<pre class="methodSignature">public&nbsp;java.nio.charset.Charset&nbsp;getCharset()</pre>
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<pre class="methodSignature">public final&nbsp;java.lang.String&nbsp;getCollationName()</pre>
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<pre class="methodSignature">public final&nbsp;<a href="SqlCollation.Coercibility.html" title="enum in org.apache.calcite.sql">SqlCollation.Coercibility</a>&nbsp;getCoercibility()</pre>
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