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` is `5.0.0-beta05`, and the page provides access to multiple other versions, ranging from `3.5.0` to `5.0.0-beta04`."],["`QueryPlan` is a class that contains an ordered list of nodes in a query plan, and it's implemented as a part of the `Google.Cloud.Spanner.V1` namespace within the `Google.Cloud.Spanner.V1.dll` assembly."],["The `QueryPlan` class implements several interfaces, including `IMessage\u003cQueryPlan\u003e`, `IEquatable\u003cQueryPlan\u003e`, `IDeepCloneable\u003cQueryPlan\u003e`, and `IBufferMessage`."],["The `QueryPlan` class has a `PlanNodes` property, which is a `RepeatedField\u003cPlanNode\u003e` that holds the ordered list of plan nodes, with each node's ID corresponding to its index."],["There are two constructors for the `QueryPlan` class: a default constructor (`QueryPlan()`) and a copy constructor (`QueryPlan(QueryPlan other)`)."]]],[]]