Optionalquery_Optionalschema_The schema version that was used for the query execution.
Optionalstats?: QueryStatsStats on query performance and cost
Optionalsummary?: stringA readable summary of any warnings or logs emitted by the query.
Optionaltxn_The last transaction timestamp of the query. A Unix epoch in microseconds.
The value of the x-query-tags header, if it was provided.