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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.
Classes
ChildLink
ChildLink
(
mapping
=
None
,
*
,
ignore_unknown_fields
=
False
,
**
kwargs
)
Metadata associated with a parent-child relationship appearing in a PlanNode][google.spanner.v1.PlanNode]
.
Kind
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
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].
