optimizerVersion property
An option to control the selection of optimizer version.
This parameter allows individual queries to pick different query optimizer
versions. Specifying latest as a value instructs Cloud Spanner to use
the latest supported query optimizer version. If not specified, Cloud
Spanner uses the optimizer version set at the database level options. Any
other positive integer (from the list of supported optimizer versions)
overrides the default optimizer version for query execution. The list of
supported optimizer versions can be queried from
SPANNER_SYS.SUPPORTED_OPTIMIZER_VERSIONS. Executing a SQL statement with
an invalid optimizer version fails with an INVALID_ARGUMENT error. See
https://cloud.google.com/spanner/docs/query-optimizer/manage-query-optimizer
for more information on managing the query optimizer. The
optimizer_version statement hint has precedence over this setting.
Implementation
core.String? optimizerVersion;