replace_running_query_* session settings

These settings are available in system.settings and are autogenerated from source.

replace_running_query

When using the HTTP interface, the ‘query_id’ parameter can be passed. This is any string that serves as the query identifier. If a query from the same user with the same ‘query_id’ already exists at this time, the behaviour depends on the ‘replace_running_query’ parameter.

0 (default) – Throw an exception (do not allow the query to run if a query with the same ‘query_id’ is already running).

1 – Cancel the old query and start running the new one.

Set this parameter to 1 for implementing suggestions for segmentation conditions. After entering the next character, if the old query hasn’t finished yet, it should be cancelled.

replace_running_query_max_wait_ms

The wait time for running the query with the same query_id to finish, when the replace_running_query setting is active.

Possible values:

• Positive integer.
• 0 — Throwing an exception that does not allow to run a new query if the server already executes a query with the same query_id.