Class PlanNode (3.22.0)

PlanNode(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Node information for nodes appearing in a QueryPlan.plan_nodes][google.spanner.v1.QueryPlan.plan_nodes].

Attributes

Name	Description
index	`int` The ``PlanNode``'s index in [node list][google.spanner.v1.QueryPlan.plan_nodes].
kind	`google.cloud.spanner_v1.types.PlanNode.Kind` Used to determine the type of node. May be needed for visualizing different kinds of nodes differently. For example, If the node is a `SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR]` node, it will have a condensed representation which can be used to directly embed a description of the node in its parent.
display_name	`str` The display name for the node.
child_links	`Sequence[google.cloud.spanner_v1.types.PlanNode.ChildLink]` List of child node ``index``\ es and their relationship to this parent.
short_representation	`google.cloud.spanner_v1.types.PlanNode.ShortRepresentation` Condensed representation for `SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR]` nodes.
metadata	`google.protobuf.struct_pb2.Struct` Attributes relevant to the node contained in a group of key-value pairs. For example, a Parameter Reference node could have the following information in its metadata: :: { "parameter_reference": "param1", "parameter_type": "array" }
execution_stats	`google.protobuf.struct_pb2.Struct` The execution statistics associated with the node, contained in a group of key-value pairs. Only present if the plan was returned as a result of a profile query. For example, number of executions, number of rows/time per execution etc.

builtins.object > proto.message.Message > PlanNode

ChildLink(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Metadata associated with a parent-child relationship appearing in a PlanNode][google.spanner.v1.PlanNode].

Kind(value)

The kind of PlanNode][google.spanner.v1.PlanNode]. Distinguishes between the two different kinds of nodes that can appear in a query plan.

ShortRepresentation(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Condensed representation of a node and its subtree. Only present for SCALAR [PlanNode(s)][google.spanner.v1.PlanNode].