CombineUnions Logical Optimization¶

CombineUnions is a base logical optimization that <>.

CombineUnions is part of the Union once-executed batch in the standard batches of the Logical Optimizer.

CombineUnions is simply a <> for transforming <>, i.e. Rule[LogicalPlan].

[source, scala]¶

// FIXME Demo¶

Executing Rule¶

apply(plan: LogicalPlan): LogicalPlan

apply...FIXME

apply is part of the Rule abstraction.