ResolveAliases Logical Resolution Rule¶

ResolveAliases is a logical resolution rule that the logical query plan analyzer uses to <> in an entire logical query plan.

Technically, ResolveAliases is just a catalyst/Rule.md[Catalyst rule] for transforming spark-sql-LogicalPlan.md[logical plans], i.e. Rule[LogicalPlan].

ResolveAliases is part of Resolution fixed-point batch of rules.

Example¶

import spark.sessionState.analyzer.ResolveAliases

// FIXME Using ResolveAliases rule

=== [[apply]] Applying ResolveAliases to Logical Plan -- apply Method

[source, scala]¶

apply(plan: LogicalPlan): LogicalPlan¶

NOTE: apply is part of catalyst/Rule.md#apply[Rule Contract] to apply a rule to a spark-sql-LogicalPlan.md[logical plan].

apply...FIXME

=== [[assignAliases]] assignAliases Internal Method

[source, scala]¶

assignAliases(exprs: Seq[NamedExpression]): Seq[NamedExpression]¶

assignAliases...FIXME

NOTE: assignAliases is used when...FIXME