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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql.validate</a></div> |
| <h2 title="Interface AggregatingScope" class="title">Interface AggregatingScope</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></dd> |
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| <dd><code><a href="AggregatingSelectScope.html" title="class in org.apache.calcite.sql.validate">AggregatingSelectScope</a></code></dd> |
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| <pre>public interface <span class="typeNameLabel">AggregatingScope</span> |
| extends <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></pre> |
| <div class="block">An extension to the <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorScope</code></a> interface which indicates that |
| the scope is aggregating. |
| |
| <p>A scope which is aggregating must implement this interface. Such a scope |
| will return the same set of identifiers as its parent scope, but some of |
| those identifiers may not be accessible because they are not in the GROUP BY |
| clause.</div> |
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| <h3>Nested classes/interfaces inherited from interface org.apache.calcite.sql.validate.<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3> |
| <code><a href="SqlValidatorScope.EmptyPath.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.EmptyPath</a>, <a href="SqlValidatorScope.Path.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Path</a>, <a href="SqlValidatorScope.Resolve.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Resolve</a>, <a href="SqlValidatorScope.Resolved.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope.Resolved</a>, <a href="SqlValidatorScope.ResolvedImpl.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.ResolvedImpl</a>, <a href="SqlValidatorScope.Step.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Step</a></code></li> |
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| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkAggregateExpr(org.apache.calcite.sql.SqlNode,boolean)">checkAggregateExpr</a></span>​(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr, |
| boolean deep)</code></th> |
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| <div class="block">Checks whether an expression is constant within the GROUP BY clause.</div> |
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| <h3>Methods inherited from interface org.apache.calcite.sql.validate.<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3> |
| <code><a href="SqlValidatorScope.html#addChild(org.apache.calcite.sql.validate.SqlValidatorNamespace,java.lang.String,boolean)">addChild</a>, <a href="SqlValidatorScope.html#findAliases(java.util.Collection)">findAliases</a>, <a href="SqlValidatorScope.html#findAllColumnNames(java.util.List)">findAllColumnNames</a>, <a href="SqlValidatorScope.html#findQualifyingTableName(java.lang.String,org.apache.calcite.sql.SqlNode)">findQualifyingTableName</a>, <a href="SqlValidatorScope.html#findQualifyingTableNames(java.lang.String,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.validate.SqlNameMatcher)">findQualifyingTableNames</a>, <a href="SqlValidatorScope.html#fullyQualify(org.apache.calcite.sql.SqlIdentifier)">fullyQualify</a>, <a href="SqlValidatorScope.html#getMonotonicity(org.apache.calcite.sql.SqlNode)">getMonotonicity</a>, <a href="SqlValidatorScope.html#getNode()">getNode</a>, <a href="SqlValidatorScope.html#getOperandScope(org.apache.calcite.sql.SqlCall)">getOperandScope</a>, <a href="SqlValidatorScope.html#getOrderList()">getOrderList</a>, <a href="SqlValidatorScope.html#getTableNamespace(java.util.List)">getTableNamespace</a>, <a href="SqlValidatorScope.html#getValidator()">getValidator</a>, <a href="SqlValidatorScope.html#isWithin(org.apache.calcite.sql.validate.SqlValidatorScope)">isWithin</a>, <a href="SqlValidatorScope.html#lookupWindow(java.lang.String)">lookupWindow</a>, <a href="SqlValidatorScope.html#nullifyType(org.apache.calcite.sql.SqlNode,org.apache.calcite.rel.type.RelDataType)">nullifyType</a>, <a href="SqlValidatorScope.html#resolve(java.util.List,org.apache.calcite.sql.validate.SqlNameMatcher,boolean,org.apache.calcite.sql.validate.SqlValidatorScope.Resolved)">resolve</a>, <a href="SqlValidatorScope.html#resolveColumn(java.lang.String,org.apache.calcite.sql.SqlNode)">resolveColumn</a>, <a href="SqlValidatorScope.html#resolveTable(java.util.List,org.apache.calcite.sql.validate.SqlNameMatcher,org.apache.calcite.sql.validate.SqlValidatorScope.Path,org.apache.calcite.sql.validate.SqlValidatorScope.Resolved)">resolveTable</a>, <a href="SqlValidatorScope.html#validateExpr(org.apache.calcite.sql.SqlNode)">validateExpr</a></code></li> |
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| <h4>checkAggregateExpr</h4> |
| <pre class="methodSignature">boolean checkAggregateExpr​(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr, |
| boolean deep)</pre> |
| <div class="block">Checks whether an expression is constant within the GROUP BY clause. If |
| the expression completely matches an expression in the GROUP BY clause, |
| returns true. If the expression is constant within the group, but does |
| not exactly match, returns false. If the expression is not constant, |
| throws an exception. Examples: |
| |
| <ul> |
| <li>If we are 'f(b, c)' in 'SELECT a + f(b, c) FROM t GROUP BY a', then |
| the whole expression matches a group column. Return true. |
| <li>Just an ordinary expression in a GROUP BY query, such as 'f(SUM(a), |
| 1, b)' in 'SELECT f(SUM(a), 1, b) FROM t GROUP BY b'. Returns false. |
| <li>Illegal expression, such as 'f(5, a, b)' in 'SELECT f(a, b) FROM t |
| GROUP BY a'. Throws when it enounters the 'b' operand, because it is not |
| in the group clause. |
| </ul></div> |
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