Module Google::Cloud::Spanner::V1::PlanNode::Kind (v0.7.4)

Version 0.7.4

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The kind of PlanNode. Distinguishes between the two different kinds of nodes that can appear in a query plan.

Constants

KIND_UNSPECIFIED

value: 0
Not specified.

RELATIONAL

value: 1
Denotes a Relational operator node in the expression tree. Relational operators represent iterative processing of rows during query execution. For example, a TableScan operation that reads rows from a table.

SCALAR

value: 2
Denotes a Scalar node in the expression tree. Scalar nodes represent non-iterable entities in the query plan. For example, constants or arithmetic operators appearing inside predicate expressions or references to column names.