Class Kind (3.46.0)

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.

Enum values:

KIND_UNSPECIFIED (0):
    Not specified.
RELATIONAL (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 (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.