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| <h2 title="Interface AggregatingScope" class="title">Interface AggregatingScope</h2> |
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| <pre>public interface <span class="typeNameLabel">AggregatingScope</span> |
| extends <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></pre> |
| <div class="block">An extension to the <a href="../../../../../org/apache/calcite/sql/validate/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="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3> |
| <code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.EmptyPath.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.EmptyPath</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.Path.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Path</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.Resolve.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Resolve</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.Resolved.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope.Resolved</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.ResolvedImpl.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.ResolvedImpl</a>, <a href="../../../../../org/apache/calcite/sql/validate/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> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/validate/AggregatingScope.html#checkAggregateExpr-org.apache.calcite.sql.SqlNode-boolean-">checkAggregateExpr</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr, |
| boolean deep)</code> |
| <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="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3> |
| <code><a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#addChild-org.apache.calcite.sql.validate.SqlValidatorNamespace-java.lang.String-boolean-">addChild</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#findAliases-java.util.Collection-">findAliases</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#findAllColumnNames-java.util.List-">findAllColumnNames</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#findQualifyingTableName-java.lang.String-org.apache.calcite.sql.SqlNode-">findQualifyingTableName</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#findQualifyingTableNames-java.lang.String-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.validate.SqlNameMatcher-">findQualifyingTableNames</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#fullyQualify-org.apache.calcite.sql.SqlIdentifier-">fullyQualify</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getMonotonicity-org.apache.calcite.sql.SqlNode-">getMonotonicity</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getNode--">getNode</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getOperandScope-org.apache.calcite.sql.SqlCall-">getOperandScope</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getOrderList--">getOrderList</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getTableNamespace-java.util.List-">getTableNamespace</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#getValidator--">getValidator</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#isWithin-org.apache.calcite.sql.validate.SqlValidatorScope-">isWithin</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#lookupWindow-java.lang.String-">lookupWindow</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#nullifyType-org.apache.calcite.sql.SqlNode-org.apache.calcite.rel.type.RelDataType-">nullifyType</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#resolve-java.util.List-org.apache.calcite.sql.validate.SqlNameMatcher-boolean-org.apache.calcite.sql.validate.SqlValidatorScope.Resolved-">resolve</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#resolveColumn-java.lang.String-org.apache.calcite.sql.SqlNode-">resolveColumn</a>, <a href="../../../../../org/apache/calcite/sql/validate/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="../../../../../org/apache/calcite/sql/validate/SqlValidatorScope.html#validateExpr-org.apache.calcite.sql.SqlNode-">validateExpr</a></code></li> |
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| <h4>checkAggregateExpr</h4> |
| <pre>boolean checkAggregateExpr(<a href="../../../../../org/apache/calcite/sql/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. |
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