Class ChildLink (1.16.0)

Version 1.16.0

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

The type of the link. For example, in Hash Joins this could be used to distinguish between the build child and the probe child, or in the case of the child being an output variable, to represent the tag associated with the output variable.