The nodes in the query plan. Plan nodes are returned in pre-order starting
with the plan root. Each [PlanNode][google.spanner.v1.PlanNode]'s id corresponds to its index in
plan_nodes.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-17 UTC."],[[["The latest version of the `QueryPlan` documentation is 5.0.0-beta05, with multiple previous versions available for reference, including the current version of 3.5.0."],["`QueryPlan` is a class that contains an ordered list of nodes appearing in a query plan."],["`QueryPlan` inherits from `Object` and implements multiple interfaces including `IMessage`, `IEquatable\u003cQueryPlan\u003e`, `IDeepCloneable\u003cQueryPlan\u003e`, and `IBufferMessage`."],["The class offers two constructors: a parameterless constructor and one that takes another `QueryPlan` instance as a parameter."],["The `PlanNodes` property, of type `RepeatedField\u003cPlanNode\u003e`, provides access to the nodes within the query plan in a pre-order sequence."]]],[]]