GroupByScope (Apache Calcite API)

java.lang.Object
- org.apache.calcite.sql.validate.DelegatingScope
- - org.apache.calcite.sql.validate.GroupByScope

All Implemented Interfaces:

SqlValidatorScope
```
public class GroupByScope
extends DelegatingScope
```
Represents the name-resolution context for expressions in an GROUP BY clause.
In some dialects of SQL, the GROUP BY clause can reference column aliases in the SELECT clause. For example, the query

SELECT empno AS x FROM emp GROUP BY x

is valid.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.calcite.sql.validate.SqlValidatorScope
  SqlValidatorScope.EmptyPath, SqlValidatorScope.Path, SqlValidatorScope.Resolve, SqlValidatorScope.Resolved, SqlValidatorScope.ResolvedImpl, SqlValidatorScope.Step

Field Summary

Fields
Modifier and Type Field Description

private SqlNodeList groupByList

private SqlSelect select
- Fields inherited from class org.apache.calcite.sql.validate.DelegatingScope
  parent, validator

Constructor Summary

Constructors
Constructor Description

GroupByScope(SqlValidatorScope parent, SqlNodeList groupByList, SqlSelect select)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SqlNode`	`getNode()`	Returns the root node of this scope.
`void`	`validateExpr(SqlNode expr)`	Performs any scope-specific validation of an expression.

Methods inherited from class org.apache.calcite.sql.validate.DelegatingScope
addChild, addColumnNames, findAliases, findAllColumnNames, findQualifyingTableName, findQualifyingTableNames, fullyQualify, getMonotonicity, getOperandScope, getOrderList, getParent, getTableNamespace, getValidator, lookupWindow, nullifyType, resolve, resolveColumn, resolveInNamespace, resolveTable

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.sql.validate.SqlValidatorScope
isWithin

- Field Detail
  - groupByList
```
private final SqlNodeList groupByList
```
  - select
```
private final SqlSelect select
```
- Constructor Detail
  - GroupByScope
```
GroupByScope(SqlValidatorScope parent,
             SqlNodeList groupByList,
             SqlSelect select)
```
- Method Detail
  - getNode
```
public SqlNode getNode()
```
    Description copied from interface: SqlValidatorScope
    
    Returns the root node of this scope. Never null.
  - validateExpr
```
public void validateExpr(SqlNode expr)
```
    Description copied from interface: SqlValidatorScope
    
    Performs any scope-specific validation of an expression. For example, an aggregating scope requires that expressions are valid aggregations. The expression has already been validated.
    
    Specified by:
    
    validateExpr in interface SqlValidatorScope
    
    Overrides:
    
    validateExpr in class DelegatingScope