Class PlanNode (3.0.0)

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`	`.query_plan.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[.query_plan.PlanNode.ChildLink]` List of child node `index`\ es and their relationship to this parent.
`short_representation`	`.query_plan.PlanNode.ShortRepresentation` Condensed representation for `SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR]` nodes.
`metadata`	`.struct.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`	`.struct.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.

Classes

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].