Packages

trait Expression extends AnyRef

Base class of the public logical expression API.

Annotations
@Evolving()
Source
Expression.java
Since

3.0.0

Linear Supertypes
AnyRef, Any
Known Subclasses
Literal, NamedReference, SortOrder, Transform, AggregateFunc, Avg, Count, CountStar, GeneralAggregateFunc, Max, Min, Sum, UserDefinedAggregateFunc, AlwaysFalse, AlwaysTrue
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Inherited
  1. Expression
  2. AnyRef
  3. Any
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def children(): Array[Expression]

    Returns an array of the children of this node.

    Returns an array of the children of this node. Children should not change.

Concrete Value Members

  1. def describe(): String

    Format the expression as a human readable SQL-like string.

  2. def references(): Array[NamedReference]

    List of fields or columns that are referenced by this expression.