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 <div class="subTitle">org.apache.calcite.sql.validate</div>
 <h2 title="Interface SqlValidator.Config" class="title">Interface SqlValidator.Config</h2>
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 <dt>Enclosing interface:</dt>
 <dd><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></dd>
 </dl>
 <hr>
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 <pre>public static interface <span class="typeNameLabel">SqlValidator.Config</span></pre>
 <div class="block">Interface to define the configuration for a SqlValidator.
  Provides methods to set each configuration option.</div>
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 <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Field and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#DEFAULT">DEFAULT</a></span></code>
 <div class="block">Default configuration.</div>
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 <caption><span id="t0" class="activeTableTab"><span>All Methods</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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#callRewrite--">callRewrite</a></span>()</code>
 <div class="block">Returns whether to enable rewrite of "macro-like" calls such as COALESCE.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#columnReferenceExpansion--">columnReferenceExpansion</a></span>()</code>
 <div class="block">Returns whether column reference expansion is enabled</div>
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 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/config/NullCollation.html" title="enum in org.apache.calcite.config">NullCollation</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#defaultNullCollation--">defaultNullCollation</a></span>()</code>
 <div class="block">Returns how NULL values should be collated if an ORDER BY item does not
  contain NULLS FIRST or NULLS LAST.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#identifierExpansion--">identifierExpansion</a></span>()</code>
 <div class="block">Returns whether to expand identifiers other than column
  references.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#lenientOperatorLookup--">lenientOperatorLookup</a></span>()</code>
 <div class="block">Returns whether this validator should be lenient upon encountering an
  unknown function, default false.</div>
 </td>
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 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlConformance.html" title="interface in org.apache.calcite.sql.validate">SqlConformance</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#sqlConformance--">sqlConformance</a></span>()</code>
 <div class="block">Returns the dialect of SQL (SQL:2003, etc.) this validator recognizes.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#typeCoercionEnabled--">typeCoercionEnabled</a></span>()</code>
 <div class="block">Returns whether the validator supports implicit type coercion.</div>
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 <tr id="i7" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionFactory.html" title="interface in org.apache.calcite.sql.validate.implicit">TypeCoercionFactory</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#typeCoercionFactory--">typeCoercionFactory</a></span>()</code>
 <div class="block">Returns the type coercion factory.</div>
 </td>
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 <tr id="i8" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/type/SqlTypeCoercionRule.html" title="class in org.apache.calcite.sql.type">SqlTypeCoercionRule</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#typeCoercionRules--">typeCoercionRules</a></span>()</code>
 <div class="block">Returns the type coercion rules for explicit type coercion.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withCallRewrite-boolean-">withCallRewrite</a></span>(boolean&nbsp;rewrite)</code>
 <div class="block">Sets whether to enable rewrite of "macro-like" calls such as COALESCE.</div>
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 <tr id="i10" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withColumnReferenceExpansion-boolean-">withColumnReferenceExpansion</a></span>(boolean&nbsp;expand)</code>
 <div class="block">Sets whether to enable expansion of column references.</div>
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 <tr id="i11" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
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 <div class="block">Sets how NULL values should be collated if an ORDER BY item does not
  contain NULLS FIRST or NULLS LAST.</div>
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 <tr id="i12" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withIdentifierExpansion-boolean-">withIdentifierExpansion</a></span>(boolean&nbsp;expand)</code>
 <div class="block">Sets whether to enable expansion of identifiers other than column
  references.</div>
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 <tr id="i13" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withLenientOperatorLookup-boolean-">withLenientOperatorLookup</a></span>(boolean&nbsp;lenient)</code>
 <div class="block">Sets whether this validator should be lenient upon encountering an unknown
  function.</div>
 </td>
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 <tr id="i14" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withSqlConformance-org.apache.calcite.sql.validate.SqlConformance-">withSqlConformance</a></span>(<a href="../../../../../org/apache/calcite/sql/validate/SqlConformance.html" title="interface in org.apache.calcite.sql.validate">SqlConformance</a>&nbsp;conformance)</code>
 <div class="block">Sets up the sql conformance of the validator.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withTypeCoercionEnabled-boolean-">withTypeCoercionEnabled</a></span>(boolean&nbsp;enabled)</code>
 <div class="block">Sets whether to enable implicit type coercion for validation, default true.</div>
 </td>
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 <tr id="i16" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withTypeCoercionFactory-org.apache.calcite.sql.validate.implicit.TypeCoercionFactory-">withTypeCoercionFactory</a></span>(<a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionFactory.html" title="interface in org.apache.calcite.sql.validate.implicit">TypeCoercionFactory</a>&nbsp;factory)</code>
 <div class="block">Sets a factory to create type coercion instance that overrides the
  default coercion rules defined in
  <a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionImpl.html" title="class in org.apache.calcite.sql.validate.implicit"><code>TypeCoercionImpl</code></a>.</div>
 </td>
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 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html#withTypeCoercionRules-org.apache.calcite.sql.type.SqlTypeCoercionRule-">withTypeCoercionRules</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeCoercionRule.html" title="class in org.apache.calcite.sql.type">SqlTypeCoercionRule</a>&nbsp;rules)</code>
 <div class="block">Sets the <a href="../../../../../org/apache/calcite/sql/type/SqlTypeCoercionRule.html" title="class in org.apache.calcite.sql.type"><code>SqlTypeCoercionRule</code></a> instance which defines the type conversion matrix
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 <h4>DEFAULT</h4>
 <pre>static final&nbsp;<a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a> DEFAULT</pre>
 <div class="block">Default configuration.</div>
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 <pre>boolean&nbsp;callRewrite()</pre>
 <div class="block">Returns whether to enable rewrite of "macro-like" calls such as COALESCE.</div>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withCallRewrite(boolean&nbsp;rewrite)</pre>
 <div class="block">Sets whether to enable rewrite of "macro-like" calls such as COALESCE.</div>
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 <pre><a href="../../../../../org/apache/calcite/config/NullCollation.html" title="enum in org.apache.calcite.config">NullCollation</a>&nbsp;defaultNullCollation()</pre>
 <div class="block">Returns how NULL values should be collated if an ORDER BY item does not
  contain NULLS FIRST or NULLS LAST.</div>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withDefaultNullCollation(<a href="../../../../../org/apache/calcite/config/NullCollation.html" title="enum in org.apache.calcite.config">NullCollation</a>&nbsp;nullCollation)</pre>
 <div class="block">Sets how NULL values should be collated if an ORDER BY item does not
  contain NULLS FIRST or NULLS LAST.</div>
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 <pre>boolean&nbsp;columnReferenceExpansion()</pre>
 <div class="block">Returns whether column reference expansion is enabled</div>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withColumnReferenceExpansion(boolean&nbsp;expand)</pre>
 <div class="block">Sets whether to enable expansion of column references. (Currently this does
  not apply to the ORDER BY clause; may be fixed in the future.)</div>
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 <pre>boolean&nbsp;identifierExpansion()</pre>
 <div class="block">Returns whether to expand identifiers other than column
  references.

  <p>REVIEW jvs 30-June-2006: subclasses may override shouldExpandIdentifiers
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  method and always use this variable (or better, move preferences like
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withIdentifierExpansion(boolean&nbsp;expand)</pre>
 <div class="block">Sets whether to enable expansion of identifiers other than column
  references.</div>
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 <pre>boolean&nbsp;lenientOperatorLookup()</pre>
 <div class="block">Returns whether this validator should be lenient upon encountering an
  unknown function, default false.

  <p>If true, if a statement contains a call to a function that is not
  present in the operator table, or if the call does not have the required
  number or types of operands, the validator nevertheless regards the
  statement as valid. The type of the function call will be
  <a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.html#getUnknownType--"><code>UNKNOWN</code></a>.

  <p>If false (the default behavior), an unknown function call causes a
  validation error to be thrown.</div>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withLenientOperatorLookup(boolean&nbsp;lenient)</pre>
 <div class="block">Sets whether this validator should be lenient upon encountering an unknown
  function.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>lenient</code> - Whether to be lenient when encountering an unknown function</dd>
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 <pre>boolean&nbsp;typeCoercionEnabled()</pre>
 <div class="block">Returns whether the validator supports implicit type coercion.</div>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withTypeCoercionEnabled(boolean&nbsp;enabled)</pre>
 <div class="block">Sets whether to enable implicit type coercion for validation, default true.</div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionImpl.html" title="class in org.apache.calcite.sql.validate.implicit"><code>TypeCoercionImpl</code></a></dd>
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 <pre><a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionFactory.html" title="interface in org.apache.calcite.sql.validate.implicit">TypeCoercionFactory</a>&nbsp;typeCoercionFactory()</pre>
 <div class="block">Returns the type coercion factory.</div>
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 <h4>withTypeCoercionFactory</h4>
 <pre><a href="../../../../../org/apache/calcite/sql/validate/SqlValidator.Config.html" title="interface in org.apache.calcite.sql.validate">SqlValidator.Config</a>&nbsp;withTypeCoercionFactory(<a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionFactory.html" title="interface in org.apache.calcite.sql.validate.implicit">TypeCoercionFactory</a>&nbsp;factory)</pre>
 <div class="block">Sets a factory to create type coercion instance that overrides the
  default coercion rules defined in
  <a href="../../../../../org/apache/calcite/sql/validate/implicit/TypeCoercionImpl.html" title="class in org.apache.calcite.sql.validate.implicit"><code>TypeCoercionImpl</code></a>.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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 <div class="block">Returns the type coercion rules for explicit type coercion.</div>
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 <div class="block">Sets the <a href="../../../../../org/apache/calcite/sql/type/SqlTypeCoercionRule.html" title="class in org.apache.calcite.sql.type"><code>SqlTypeCoercionRule</code></a> instance which defines the type conversion matrix
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  <p>The <code>rules</code> setting should be thread safe. In the default implementation,
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 <div class="block">Returns the dialect of SQL (SQL:2003, etc.) this validator recognizes.
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 <div class="block">Sets up the sql conformance of the validator.</div>
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