Additional provider-specific metadata
OptionalbookmarkLatest session bookmark of the shard that served a read made with a ReadConsistency. Absent when the read ran without a session or the session has no bookmark yet.
OptionalbookmarksBookmarks of every database a merged read touched, keyed by database id
(shardState[binding].id). Pass it back as bookmarks to resume. Left off
when a shard has no verified id.
OptionalchangesNumber of changed rows (when available)
Query duration in milliseconds
Optionallast_Last inserted row id (when available)
Metadata for SQL query execution results.