update_* session settings

These settings are available in system.settings and are autogenerated from the ClickHouse snapshot.

update_parallel_mode

Determines the behavior of concurrent update queries.

Possible values:

• sync - run sequentially all UPDATE queries.
• auto - run sequentially only UPDATE queries with dependencies between columns updated in one query and columns used in expressions of another query.
• async - do not synchronize update queries.

update_sequential_consistency

If true set of parts is updated to the latest version before execution of update.