ResolveGroupingAnalytics Logical Resolution Rule¶

ResolveGroupingAnalytics is a logical resolution rule (Rule[LogicalPlan]).

ResolveGroupingAnalytics is part of Resolution batch of Logical Analyzer.

Creating Instance¶

ResolveGroupingAnalytics takes no arguments to be created.

Singleton Object

ResolveGroupingAnalytics is a Scala object which is a class that has exactly one instance. It is created lazily when it is referenced, like a lazy val.

Learn more in Tour of Scala.

ResolveGroupingAnalytics is created when:

Analyzer is requested for batches

Executing Rule¶

Rule

apply(
  plan: LogicalPlan): LogicalPlan

apply is part of the Rule abstraction.

apply resolves the following operators in the input LogicalPlan:

UnresolvedHaving with Aggregate with Cube
UnresolvedHaving with Aggregate with Rollup
UnresolvedHaving with GroupingSets
Aggregate with Cube
Aggregate with Rollup
GroupingSets
Filter with Grouping or GroupingID expressions
Sort with Grouping or GroupingID expressions

tryResolveHavingCondition¶

tryResolveHavingCondition(
  h: UnresolvedHaving): LogicalPlan

tryResolveHavingCondition...FIXME

constructAggregate¶

constructAggregate(
  selectedGroupByExprs: Seq[Seq[Expression]],
  groupByExprs: Seq[Expression],
  aggregationExprs: Seq[NamedExpression],
  child: LogicalPlan): LogicalPlan

constructAggregate...FIXME

constructExpand¶

constructExpand(
  selectedGroupByExprs: Seq[Seq[Expression]],
  child: LogicalPlan,
  groupByAliases: Seq[Alias],
  gid: Attribute): LogicalPlan

constructExpand...FIXME

hasGroupingFunction¶

hasGroupingFunction(
  e: Expression): Boolean

hasGroupingFunction holds true when there is either Grouping or GroupingID expression in the given Expression (tree).

In other words, the given Expression or its children are Grouping or GroupingID expressions.